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add stylecheck and spotbugs

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ulic-youthlic 2025-05-12 21:53:11 +08:00
parent 828cec3f1e
commit 338d172893
6 changed files with 1168 additions and 639 deletions
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8
app/build.gradle.kts
View file

@ -8,6 +8,7 @@
plugins {
// Apply the application plugin to add support for building a CLI application in Java.
application
checkstyle
id("com.gradleup.shadow") version "9.0.0-beta12"
}
@ -16,6 +17,13 @@ repositories {
mavenCentral()
}
sourceSets { main { java { srcDirs("src/main/java") } } }
checkstyle {
toolVersion = "10.12.4"
configFile = file("./checkstyle.xml")
}
dependencies {
// Use JUnit Jupiter for testing.
testImplementation(libs.junit.jupiter)

447
app/checkstyle.xml Normal file
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@ -0,0 +1,447 @@
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
"https://checkstyle.org/dtds/configuration_1_3.dtd">
<!--
Checkstyle configuration that checks the Google coding conventions from Google Java Style
that can be found at https://google.github.io/styleguide/javaguide.html
Checkstyle is very configurable. Be sure to read the documentation at
http://checkstyle.org (or in your downloaded distribution).
To completely disable a check, just comment it out or delete it from the file.
To suppress certain violations please review suppression filters.
Authors: Max Vetrenko, Mauryan Kansara, Ruslan Diachenko, Roman Ivanov.
-->
<module name="Checker">
<property name="charset" value="UTF-8"/>
<property name="severity" value="${org.checkstyle.google.severity}" default="warning"/>
<property name="fileExtensions" value="java, properties, xml"/>
<!-- Excludes all 'module-info.java' files -->
<!-- See https://checkstyle.org/filefilters/index.html -->
<!-- <module name="BeforeExecutionExclusionFileFilter"> -->
<!-- <property name="fileNamePattern" value=""/> -->
<!-- </module> -->
<module name="SuppressWarningsFilter"/>
<!-- https://checkstyle.org/filters/suppressionfilter.html -->
<module name="SuppressionFilter">
<property name="file" value="${org.checkstyle.google.suppressionfilter.config}"
default="checkstyle-suppressions.xml" />
<property name="optional" value="true"/>
</module>
<!-- https://checkstyle.org/filters/suppresswithnearbytextfilter.html -->
<module name="SuppressWithNearbyTextFilter">
<property name="nearbyTextPattern"
value="CHECKSTYLE.SUPPRESS\: (\w+) for ([+-]\d+) lines"/>
<property name="checkPattern" value="$1"/>
<property name="lineRange" value="$2"/>
</module>
<!-- Checks for whitespace -->
<!-- See http://checkstyle.org/checks/whitespace/index.html -->
<module name="FileTabCharacter">
<property name="eachLine" value="true"/>
</module>
<module name="LineLength">
<property name="fileExtensions" value="java"/>
<property name="max" value="100"/>
<property name="ignorePattern"
value="^package.*|^import.*|href\s*=\s*&quot;[^&quot;]*&quot;|http://|https://|ftp://"/>
</module>
<module name="TreeWalker">
<module name="OuterTypeFilename"/>
<module name="IllegalTokenText">
<property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
<property name="format"
value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
<property name="message"
value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
</module>
<module name="AvoidEscapedUnicodeCharacters">
<property name="allowEscapesForControlCharacters" value="true"/>
<property name="allowByTailComment" value="true"/>
<property name="allowNonPrintableEscapes" value="true"/>
</module>
<module name="AvoidStarImport"/>
<module name="OneTopLevelClass"/>
<module name="NoLineWrap">
<property name="tokens" value="PACKAGE_DEF, IMPORT, STATIC_IMPORT"/>
</module>
<module name="NeedBraces">
<property name="tokens"
value="LITERAL_DO, LITERAL_ELSE, LITERAL_FOR, LITERAL_IF, LITERAL_WHILE"/>
</module>
<module name="LeftCurly">
<property name="id" value="LeftCurlyEol"/>
<property name="tokens"
value="ANNOTATION_DEF, CLASS_DEF, CTOR_DEF, ENUM_CONSTANT_DEF, ENUM_DEF,
INTERFACE_DEF, LAMBDA, LITERAL_CATCH,
LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF,
LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, METHOD_DEF,
OBJBLOCK, STATIC_INIT, RECORD_DEF, COMPACT_CTOR_DEF"/>
</module>
<module name="LeftCurly">
<property name="id" value="LeftCurlyNl"/>
<property name="option" value="nl"/>
<property name="tokens"
value="LITERAL_CASE, LITERAL_DEFAULT"/>
</module>
<module name="SuppressionXpathSingleFilter">
<!-- LITERAL_CASE, LITERAL_DEFAULT are reused in SWITCH_RULE -->
<property name="id" value="LeftCurlyNl"/>
<property name="query" value="//SWITCH_RULE/SLIST"/>
</module>
<module name="RightCurly">
<property name="id" value="RightCurlySame"/>
<property name="tokens"
value="LITERAL_TRY, LITERAL_CATCH, LITERAL_IF, LITERAL_ELSE,
LITERAL_DO"/>
</module>
<module name="SuppressionXpathSingleFilter">
<property name="id" value="RightCurlySame"/>
<property name="query" value="//RCURLY[parent::SLIST[parent::LITERAL_CATCH
and not(parent::LITERAL_CATCH/following-sibling::*)]]"/>
</module>
<module name="RightCurly">
<property name="id" value="RightCurlyAlone"/>
<property name="option" value="alone"/>
<property name="tokens"
value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,
INSTANCE_INIT, ANNOTATION_DEF, ENUM_DEF, INTERFACE_DEF, RECORD_DEF,
COMPACT_CTOR_DEF, LITERAL_SWITCH, LITERAL_CASE, LITERAL_FINALLY,
LITERAL_CATCH"/>
</module>
<module name="SuppressionXpathSingleFilter">
<!-- suppression is required till https://github.com/checkstyle/checkstyle/issues/7541 -->
<property name="id" value="RightCurlyAlone"/>
<property name="query" value="//RCURLY[parent::SLIST[count(./*)=1
and not(parent::LITERAL_CATCH)]
or (preceding-sibling::*[last()][self::LCURLY]
and not(parent::SLIST/parent::LITERAL_CATCH))
or (parent::SLIST/parent::LITERAL_CATCH
and parent::SLIST/parent::LITERAL_CATCH/following-sibling::*)]"/>
</module>
<module name="WhitespaceAfter">
<property name="tokens"
value="COMMA, SEMI, TYPECAST, LITERAL_IF, LITERAL_ELSE, LITERAL_RETURN,
LITERAL_WHILE, LITERAL_DO, LITERAL_FOR, LITERAL_FINALLY, DO_WHILE, ELLIPSIS,
LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_CATCH, LAMBDA,
LITERAL_YIELD, LITERAL_CASE, LITERAL_WHEN"/>
</module>
<module name="WhitespaceAround">
<property name="allowEmptyConstructors" value="true"/>
<property name="allowEmptyLambdas" value="true"/>
<property name="allowEmptyMethods" value="true"/>
<property name="allowEmptyTypes" value="true"/>
<property name="allowEmptyLoops" value="true"/>
<property name="allowEmptySwitchBlockStatements" value="true"/>
<property name="ignoreEnhancedForColon" value="false"/>
<property name="tokens"
value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR,
BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, DO_WHILE, EQUAL, GE, GT, LAMBDA, LAND,
LCURLY, LE, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY,
LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, LITERAL_SWITCH, LITERAL_SYNCHRONIZED,
LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN,
NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, RCURLY, SL, SLIST, SL_ASSIGN, SR,
SR_ASSIGN, STAR, STAR_ASSIGN, LITERAL_ASSERT,
TYPE_EXTENSION_AND, LITERAL_WHEN"/>
<message key="ws.notFollowed"
value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks
may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
<message key="ws.notPreceded"
value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
</module>
<module name="SuppressionXpathSingleFilter">
<property name="checks" value="WhitespaceAround"/>
<property name="query" value="//*[self::LITERAL_IF or self::LITERAL_ELSE or
self::STATIC_INIT]/SLIST[count(./*)=1]
| //*[self::STATIC_INIT or self::LITERAL_TRY or self::LITERAL_IF]
//*[self::RCURLY][parent::SLIST[count(./*)=1]]
| //SLIST[count(./*)=1][parent::LITERAL_TRY and
not(following-sibling::*)]
| //SLIST[count(./*)=1][parent::LITERAL_CATCH and
not(parent::LITERAL_CATCH/following-sibling::*)]"/>
</module>
<module name="RegexpSinglelineJava">
<property name="format" value="\{[ ]+\}"/>
<property name="message" value="Empty blocks should have no spaces. Empty blocks
may only be represented as '{}' when not part of a
multi-block statement (4.1.3)"/>
</module>
<module name="OneStatementPerLine"/>
<module name="MultipleVariableDeclarations"/>
<module name="ArrayTypeStyle"/>
<module name="MissingSwitchDefault"/>
<module name="FallThrough"/>
<module name="UpperEll"/>
<module name="ModifierOrder"/>
<module name="EmptyLineSeparator">
<property name="tokens"
value="PACKAGE_DEF, IMPORT, STATIC_IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
STATIC_INIT, INSTANCE_INIT, METHOD_DEF, CTOR_DEF, VARIABLE_DEF, RECORD_DEF,
COMPACT_CTOR_DEF"/>
<property name="allowNoEmptyLineBetweenFields" value="true"/>
</module>
<module name="SeparatorWrap">
<property name="id" value="SeparatorWrapDot"/>
<property name="tokens" value="DOT"/>
<property name="option" value="nl"/>
</module>
<module name="SeparatorWrap">
<property name="id" value="SeparatorWrapComma"/>
<property name="tokens" value="COMMA"/>
<property name="option" value="EOL"/>
</module>
<module name="SeparatorWrap">
<!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/259 -->
<property name="id" value="SeparatorWrapEllipsis"/>
<property name="tokens" value="ELLIPSIS"/>
<property name="option" value="EOL"/>
</module>
<module name="SeparatorWrap">
<!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/258 -->
<property name="id" value="SeparatorWrapArrayDeclarator"/>
<property name="tokens" value="ARRAY_DECLARATOR"/>
<property name="option" value="EOL"/>
</module>
<module name="SeparatorWrap">
<property name="id" value="SeparatorWrapMethodRef"/>
<property name="tokens" value="METHOD_REF"/>
<property name="option" value="nl"/>
</module>
<module name="PackageName">
<property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
<message key="name.invalidPattern"
value="Package name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="TypeName">
<property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
ANNOTATION_DEF, RECORD_DEF"/>
<message key="name.invalidPattern"
value="Type name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="MemberName">
<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
<message key="name.invalidPattern"
value="Member name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="ParameterName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Parameter name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="LambdaParameterName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="CatchParameterName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="LocalVariableName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Local variable name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="PatternVariableName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Pattern variable name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="ClassTypeParameterName">
<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
<message key="name.invalidPattern"
value="Class type name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="RecordComponentName">
<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
<message key="name.invalidPattern"
value="Record component name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="RecordTypeParameterName">
<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
<message key="name.invalidPattern"
value="Record type name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="MethodTypeParameterName">
<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
<message key="name.invalidPattern"
value="Method type name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="InterfaceTypeParameterName">
<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
<message key="name.invalidPattern"
value="Interface type name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="NoFinalizer"/>
<module name="GenericWhitespace">
<message key="ws.followed"
value="GenericWhitespace ''{0}'' is followed by whitespace."/>
<message key="ws.preceded"
value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
<message key="ws.illegalFollow"
value="GenericWhitespace ''{0}'' should followed by whitespace."/>
<message key="ws.notPreceded"
value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
</module>
<module name="Indentation">
<property name="basicOffset" value="2"/>
<property name="braceAdjustment" value="2"/>
<property name="caseIndent" value="2"/>
<property name="throwsIndent" value="4"/>
<property name="lineWrappingIndentation" value="4"/>
<property name="arrayInitIndent" value="2"/>
</module>
<module name="AbbreviationAsWordInName">
<property name="ignoreFinal" value="false"/>
<property name="allowedAbbreviationLength" value="0"/>
<property name="tokens"
value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, ANNOTATION_DEF, ANNOTATION_FIELD_DEF,
PARAMETER_DEF, VARIABLE_DEF, METHOD_DEF, PATTERN_VARIABLE_DEF, RECORD_DEF,
RECORD_COMPONENT_DEF"/>
</module>
<module name="NoWhitespaceBeforeCaseDefaultColon"/>
<module name="OverloadMethodsDeclarationOrder"/>
<module name="ConstructorsDeclarationGrouping"/>
<module name="VariableDeclarationUsageDistance"/>
<module name="CustomImportOrder">
<property name="sortImportsInGroupAlphabetically" value="true"/>
<property name="separateLineBetweenGroups" value="true"/>
<property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>
<property name="tokens" value="IMPORT, STATIC_IMPORT, PACKAGE_DEF"/>
</module>
<module name="MethodParamPad">
<property name="tokens"
value="CTOR_DEF, LITERAL_NEW, METHOD_CALL, METHOD_DEF, CTOR_CALL,
SUPER_CTOR_CALL, ENUM_CONSTANT_DEF, RECORD_DEF, RECORD_PATTERN_DEF"/>
</module>
<module name="NoWhitespaceBefore">
<property name="tokens"
value="COMMA, SEMI, POST_INC, POST_DEC, DOT,
LABELED_STAT, METHOD_REF"/>
<property name="allowLineBreaks" value="true"/>
</module>
<module name="ParenPad">
<property name="tokens"
value="ANNOTATION, ANNOTATION_FIELD_DEF, CTOR_CALL, CTOR_DEF, DOT, ENUM_CONSTANT_DEF,
EXPR, LITERAL_CATCH, LITERAL_DO, LITERAL_FOR, LITERAL_IF, LITERAL_NEW,
LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_WHILE, METHOD_CALL,
METHOD_DEF, QUESTION, RESOURCE_SPECIFICATION, SUPER_CTOR_CALL, LAMBDA,
RECORD_DEF, RECORD_PATTERN_DEF"/>
</module>
<module name="OperatorWrap">
<property name="option" value="NL"/>
<property name="tokens"
value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,
LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF,
TYPE_EXTENSION_AND "/>
</module>
<module name="AnnotationLocation">
<property name="id" value="AnnotationLocationMostCases"/>
<property name="tokens"
value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF,
RECORD_DEF, COMPACT_CTOR_DEF"/>
</module>
<module name="AnnotationLocation">
<property name="id" value="AnnotationLocationVariables"/>
<property name="tokens" value="VARIABLE_DEF"/>
<property name="allowSamelineMultipleAnnotations" value="true"/>
</module>
<module name="NonEmptyAtclauseDescription"/>
<module name="InvalidJavadocPosition"/>
<module name="JavadocTagContinuationIndentation"/>
<module name="SummaryJavadoc">
<property name="forbiddenSummaryFragments"
value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
</module>
<module name="JavadocParagraph">
<property name="allowNewlineParagraph" value="false"/>
</module>
<module name="RequireEmptyLineBeforeBlockTagGroup"/>
<module name="AtclauseOrder">
<property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
<property name="target"
value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
</module>
<module name="JavadocMethod">
<property name="accessModifiers" value="public"/>
<property name="allowMissingParamTags" value="true"/>
<property name="allowMissingReturnTag" value="true"/>
<property name="allowedAnnotations" value="Override, Test"/>
<property name="tokens" value="METHOD_DEF, CTOR_DEF, ANNOTATION_FIELD_DEF, COMPACT_CTOR_DEF"/>
</module>
<module name="MissingJavadocMethod">
<property name="scope" value="protected"/>
<property name="allowMissingPropertyJavadoc" value="true"/>
<property name="allowedAnnotations" value="Override, Test"/>
<property name="tokens" value="METHOD_DEF, CTOR_DEF, ANNOTATION_FIELD_DEF,
COMPACT_CTOR_DEF"/>
</module>
<module name="SuppressionXpathSingleFilter">
<property name="checks" value="MissingJavadocMethod"/>
<property name="query" value="//*[self::METHOD_DEF or self::CTOR_DEF
or self::ANNOTATION_FIELD_DEF or self::COMPACT_CTOR_DEF]
[ancestor::*[self::INTERFACE_DEF or self::CLASS_DEF
or self::RECORD_DEF or self::ENUM_DEF]
[not(./MODIFIERS/LITERAL_PUBLIC)]]"/>
</module>
<module name="MissingJavadocType">
<property name="scope" value="protected"/>
<property name="tokens"
value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
RECORD_DEF, ANNOTATION_DEF"/>
<property name="excludeScope" value="nothing"/>
</module>
<module name="MethodName">
<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
<message key="name.invalidPattern"
value="Method name ''{0}'' must match pattern ''{1}''."/>
</module>
<module name="SuppressionXpathSingleFilter">
<property name="checks" value="MethodName"/>
<property name="query" value="//METHOD_DEF[
./MODIFIERS/ANNOTATION//IDENT[contains(@text, 'Test')]
]/IDENT"/>
<property name="message" value="'[a-z][a-z0-9][a-zA-Z0-9]*(?:_[a-z][a-z0-9][a-zA-Z0-9]*)*'"/>
</module>
<module name="SingleLineJavadoc"/>
<module name="EmptyCatchBlock">
<property name="exceptionVariableName" value="expected"/>
</module>
<module name="CommentsIndentation">
<property name="tokens" value="SINGLE_LINE_COMMENT, BLOCK_COMMENT_BEGIN"/>
</module>
<!-- https://checkstyle.org/filters/suppressionxpathfilter.html -->
<module name="SuppressionXpathFilter">
<property name="file" value="${org.checkstyle.google.suppressionxpathfilter.config}"
default="checkstyle-xpath-suppressions.xml" />
<property name="optional" value="true"/>
</module>
<module name="SuppressWarningsHolder" />
<module name="SuppressionCommentFilter">
<property name="offCommentFormat" value="CHECKSTYLE.OFF\: ([\w\|]+)" />
<property name="onCommentFormat" value="CHECKSTYLE.ON\: ([\w\|]+)" />
<property name="checkFormat" value="$1" />
</module>
<module name="SuppressWithNearbyCommentFilter">
<property name="commentFormat" value="CHECKSTYLE.SUPPRESS\: ([\w\|]+)"/>
<!-- $1 refers to the first match group in the regex defined in commentFormat -->
<property name="checkFormat" value="$1"/>
<!-- The check is suppressed in the next line of code after the comment -->
<property name="influenceFormat" value="1"/>
</module>
</module>
</module>

562
app/src/main/java/fun/youthlic/Graph.java
View file

@ -12,289 +12,353 @@ import java.util.PriorityQueue;
import java.util.Random;
import java.util.function.Function;
/**
* Core class for impl graph.
*/
public class Graph {
public record EdgeRecord(String node1, String node2, int weight) {
private final Map<String, Node> nodes;
private Map<Node, Double> pageRanks;
/**
* Initial func of Graph.
*
* @param input input text
* @param d d of page rank
*/
public Graph(final String input, final double d) {
nodes = new HashMap<>();
parse(input);
initRageRanks(d);
}
/**
* Initial func of Graph with default d.
*
* @param input input text
*/
public Graph(final String input) {
nodes = new HashMap<>();
parse(input);
initRageRanks(0.85);
}
/**
* Find bridge words.
*
* @param word1 first word
* @param word2 second word
* @return list of bridge words
*/
public Optional<List<String>> findBridgeWords(final String word1, final String word2) {
final Node node1 = nodes.get(word1.toLowerCase(Locale.ENGLISH));
final Node node2 = nodes.get(word2.toLowerCase(Locale.ENGLISH));
if (node1 == null || node2 == null) {
return Optional.empty();
}
private static class Node {
final var bridgeWords = new ArrayList<String>();
for (final var node : node1.edges.keySet()) {
if (node.edges.containsKey(node2)) {
bridgeWords.add(node.id);
}
}
return Optional.of(bridgeWords);
}
String id;
Map<Node, Integer> edges;
/**
* Find the shortest path between two words.
*
* @param word1 first word
* @param word2 second word
* @return list of the words in the path
*/
public Optional<List<String>> findShortestPath(final String word1, final String word2) {
final var startWord = word1.toLowerCase(Locale.ENGLISH);
final var endWord = word2.toLowerCase(Locale.ENGLISH);
final var path = new ArrayList<String>();
Node(final String id) {
this.id = id;
this.edges = new HashMap<>();
}
void addEdge(final Node target) {
edges.put(target, edges.getOrDefault(target, 0) + 1);
}
List<String> getDOTEdges(final Function<EdgeRecord, String> callback) {
final var dotEdges = new ArrayList<String>();
for (final var entry : edges.entrySet()) {
final Node target = entry.getKey();
final int weight = entry.getValue();
dotEdges.add(
callback.apply(new EdgeRecord(id, target.id, weight)) + ";\n");
}
return dotEdges;
}
List<String> getDOTEdges() {
final var dotEdges = new ArrayList<String>();
for (final var entry : edges.entrySet()) {
final Node target = entry.getKey();
final int weight = entry.getValue();
dotEdges.add(
String.format("%s -> %s [label=\"%d\"];\n", id, target.id, weight));
}
return dotEdges;
}
if (!nodes.containsKey(startWord) || !nodes.containsKey(endWord)) {
return Optional.empty();
}
private final Map<String, Node> nodes;
final Node startNode = nodes.get(startWord);
final Node endNode = nodes.get(endWord);
private Map<Node, Double> pageRanks;
public Graph(final String input, final double d) {
nodes = new HashMap<>();
parse(input);
initRageRanks(d);
if (startNode == endNode) {
path.add(startNode.id);
return Optional.of(path);
}
public Graph(final String input) {
nodes = new HashMap<>();
parse(input);
initRageRanks(0.85);
final var distances = new HashMap<Node, Integer>();
final var previousNodes = new HashMap<Node, Node>();
final var queue = new PriorityQueue<Node>(
Comparator.comparingInt(node -> distances.getOrDefault(node, Integer.MAX_VALUE)));
for (final var node : nodes.values()) {
distances.put(node, Integer.MAX_VALUE);
}
distances.put(startNode, 0);
queue.add(startNode);
while (!queue.isEmpty()) {
final Node current = queue.poll();
for (final var edge : current.edges.entrySet()) {
final Node neighbor = edge.getKey();
final int weight = edge.getValue();
final int newDist = distances.get(current) + weight;
if (newDist < distances.get(neighbor)) {
distances.put(neighbor, newDist);
previousNodes.put(neighbor, current);
queue.add(neighbor);
}
}
}
public Optional<List<String>> findBridgeWords(final String word1, final String word2) {
final Node node1 = nodes.get(word1.toLowerCase(Locale.ENGLISH));
final Node node2 = nodes.get(word2.toLowerCase(Locale.ENGLISH));
if (node1 == null || node2 == null) {
return Optional.empty();
}
final var bridgeWords = new ArrayList<String>();
for (final var node : node1.edges.keySet()) {
if (node.edges.containsKey(node2)) {
bridgeWords.add(node.id);
}
}
return Optional.of(bridgeWords);
if (distances.get(endNode) == Integer.MAX_VALUE) {
return Optional.of(path);
}
public Optional<List<String>> findShortestPath(final String word1, final String word2) {
final var startWord = word1.toLowerCase(Locale.ENGLISH);
final var endWord = word2.toLowerCase(Locale.ENGLISH);
final var path = new ArrayList<String>();
if (!nodes.containsKey(startWord) || !nodes.containsKey(endWord)) {
return Optional.empty();
}
final Node startNode = nodes.get(startWord);
final Node endNode = nodes.get(endWord);
if (startNode == endNode) {
path.add(startNode.id);
return Optional.of(path);
}
final var distances = new HashMap<Node, Integer>();
final var previousNodes = new HashMap<Node, Node>();
final var queue = new PriorityQueue<Node>(
Comparator.comparingInt(node -> distances.getOrDefault(node, Integer.MAX_VALUE)));
for (final var node : nodes.values()) {
distances.put(node, Integer.MAX_VALUE);
}
distances.put(startNode, 0);
queue.add(startNode);
while (!queue.isEmpty()) {
final Node current = queue.poll();
for (final var edge : current.edges.entrySet()) {
final Node neighbor = edge.getKey();
final int weight = edge.getValue();
final int newDist = distances.get(current) + weight;
if (newDist < distances.get(neighbor)) {
distances.put(neighbor, newDist);
previousNodes.put(neighbor, current);
queue.add(neighbor);
}
}
}
if (distances.get(endNode) == Integer.MAX_VALUE) {
return Optional.of(path);
}
final var reversePath = new LinkedList<String>();
Node current = endNode;
while (current != null) {
reversePath.addFirst(current.id);
current = previousNodes.get(current);
}
return Optional.of(reversePath);
final var reversePath = new LinkedList<String>();
Node current = endNode;
while (current != null) {
reversePath.addFirst(current.id);
current = previousNodes.get(current);
}
public double computePageRank(final String nodeId) {
final Node node = nodes.get(nodeId);
if (node == null) {
return -1.0;
}
return Optional.of(reversePath);
}
return pageRanks.getOrDefault(node, -1.0);
/**
* Calculate rage rank.
*
* @param nodeId id of node
* @return page rank
*/
public double computePageRank(final String nodeId) {
final Node node = nodes.get(nodeId);
if (node == null) {
return -1.0;
}
public List<String> randomWalk() {
final var path = new ArrayList<String>();
if (nodes.isEmpty()) {
return path;
}
return pageRanks.getOrDefault(node, -1.0);
}
final var random = new Random();
final var nodeIds = new ArrayList<>(nodes.keySet());
final String startNodeId = nodeIds.get(random.nextInt(nodeIds.size()));
path.add(startNodeId);
final var usedEdges = new HashMap<String, Integer>();
var currentNode = nodes.get(startNodeId);
while (true) {
final var availableEdge = new ArrayList<Map.Entry<Node, Integer>>();
int totalWeight = 0;
for (final var entry : currentNode.edges.entrySet()) {
final String edgeKey = currentNode.id + " -> " + entry.getKey().id;
if (usedEdges.getOrDefault(edgeKey, 0) < 2) {
availableEdge.add(entry);
totalWeight += entry.getValue();
}
}
if (availableEdge.isEmpty()) {
break;
}
final double randomValue = random.nextDouble() * totalWeight;
double cumulative = 0.0;
Node nextNode = null;
for (final var entry : availableEdge) {
cumulative += entry.getValue();
if (randomValue < cumulative) {
nextNode = entry.getKey();
break;
}
}
assert nextNode != null;
final String edgeKey = currentNode.id + " -> " + nextNode.id;
final int edgeTimes = usedEdges.getOrDefault(edgeKey, 0) + 1;
usedEdges.put(edgeKey, edgeTimes);
path.add(nextNode.id);
currentNode = nextNode;
if (edgeTimes >= 2) {
break;
}
}
return path;
/**
* Random walk.
*
* @return list of words in the walk path
*/
@edu.umd.cs.findbugs.annotations.SuppressFBWarnings("PREDICTABLE_RANDOM")
public List<String> randomWalk() {
final var path = new ArrayList<String>();
if (nodes.isEmpty()) {
return path;
}
public String toDOT(final Function<EdgeRecord, String> callback) {
final var sb = new StringBuilder();
sb.append("digraph G {\n");
for (final Node node : nodes.values()) {
for (final String edge : node.getDOTEdges(callback)) {
sb.append(" ").append(edge);
}
final var random = new Random();
final var nodeIds = new ArrayList<>(nodes.keySet());
final String startNodeId = nodeIds.get(random.nextInt(nodeIds.size()));
path.add(startNodeId);
final var usedEdges = new HashMap<String, Integer>();
var currentNode = nodes.get(startNodeId);
while (true) {
final var availableEdge = new ArrayList<Map.Entry<Node, Integer>>();
int totalWeight = 0;
for (final var entry : currentNode.edges.entrySet()) {
final String edgeKey = currentNode.id + " -> " + entry.getKey().id;
if (usedEdges.getOrDefault(edgeKey, 0) < 2) {
availableEdge.add(entry);
totalWeight += entry.getValue();
}
sb.append("}");
return sb.toString();
}
if (availableEdge.isEmpty()) {
break;
}
final double randomValue = random.nextDouble() * totalWeight;
double cumulative = 0.0;
Node nextNode = null;
for (final var entry : availableEdge) {
cumulative += entry.getValue();
if (randomValue < cumulative) {
nextNode = entry.getKey();
break;
}
}
assert nextNode != null;
final String edgeKey = currentNode.id + " -> " + nextNode.id;
final int edgeTimes = usedEdges.getOrDefault(edgeKey, 0) + 1;
usedEdges.put(edgeKey, edgeTimes);
path.add(nextNode.id);
currentNode = nextNode;
if (edgeTimes >= 2) {
break;
}
}
return path;
}
/**
* Generate DOT lang to describe the graph.
*
* @param callback function to modify the option of the node
* @return string of DOT lang
*/
@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
public String toDOT(final Function<EdgeRecord, String> callback) {
final var sb = new StringBuilder();
sb.append("digraph G {\n");
for (final Node node : nodes.values()) {
for (final String edge : node.getDOTEdges(callback)) {
sb.append(" ").append(edge);
}
}
sb.append("}");
return sb.toString();
}
/**
* Generate DOT lang to describe the graph without callback lambda function.
*
* @return string of DOT lang
*/
@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
public String toDOT() {
final var sb = new StringBuilder();
sb.append("digraph G {\n");
for (final Node node : nodes.values()) {
for (final String edge : node.getDOTEdges()) {
sb.append(" ").append(edge);
}
}
sb.append("}");
return sb.toString();
}
private void parse(final String input) {
final String[] tokens = input.toLowerCase(Locale.ENGLISH).split("[ \n\r]+");
final var words = new ArrayList<String>();
for (final var token : tokens) {
final String word = token.replaceAll("[^a-zA-Z]", "");
if (!word.isEmpty()) {
words.add(word);
}
}
public String toDOT() {
final var sb = new StringBuilder();
sb.append("digraph G {\n");
for (final Node node : nodes.values()) {
for (final String edge : node.getDOTEdges()) {
sb.append(" ").append(edge);
}
}
sb.append("}");
return sb.toString();
for (int i = 0; i < words.size() - 1; i++) {
final String currentWord = words.get(i);
final String nextWord = words.get(i + 1);
final Node currentNode = getOrCreateNode(currentWord);
final Node nextNode = getOrCreateNode(nextWord);
currentNode.addEdge(nextNode);
}
}
private Node getOrCreateNode(final String word) {
return nodes.computeIfAbsent(word, Node::new);
}
private void initRageRanks(final double d) {
final int totalNodes = nodes.size();
if (totalNodes == 0) {
pageRanks = new HashMap<>();
return;
}
var myPageRanks = new HashMap<Node, Double>();
final double initRank = 1.0 / totalNodes;
for (final var n : nodes.values()) {
myPageRanks.put(n, initRank);
}
private void parse(final String input) {
final String[] tokens = input.toLowerCase(Locale.ENGLISH).split("[ \n\r]+");
final var words = new ArrayList<String>();
final int iterations = 100;
for (int i = 0; i < iterations; i++) {
final var newPageRanks = new HashMap<Node, Double>();
nodes.values().forEach(n -> newPageRanks.put(n, 0.0));
for (final var curr : nodes.values()) {
final int totalEdges = curr.edges.size();
for (final var token : tokens) {
final String word = token.replaceAll("[^a-zA-Z]", "");
if (!word.isEmpty()) {
words.add(word);
}
for (final var entry : curr.edges.entrySet()) {
final Node neighbor = entry.getKey();
final double contribution = myPageRanks.get(curr) / totalEdges;
newPageRanks.put(neighbor, newPageRanks.get(neighbor) + contribution);
}
}
for (int i = 0; i < words.size() - 1; i++) {
final String currentWord = words.get(i);
final String nextWord = words.get(i + 1);
final Node currentNode = getOrCreateNode(currentWord);
final Node nextNode = getOrCreateNode(nextWord);
currentNode.addEdge(nextNode);
}
final double damplingTerm = (1.0 - d) / totalNodes;
nodes.values().forEach(n -> newPageRanks.put(n, damplingTerm + d * newPageRanks.get(n)));
myPageRanks = newPageRanks;
}
private Node getOrCreateNode(final String word) {
return nodes.computeIfAbsent(word, Node::new);
pageRanks = myPageRanks;
for (final var node : nodes.values()) {
if (node.edges.isEmpty()) {
nodes.values().stream()
.filter(n -> !n.equals(node))
.forEach(n -> pageRanks
.put(n, pageRanks.get(n) + pageRanks.get(node) / (totalNodes - 1)));
pageRanks.put(node, 0.0);
}
}
}
/**
* Record of edge.
*
* @param node1 fist node
* @param node2 second node
* @param weight weight of edge
*
*/
public record EdgeRecord(String node1, String node2, int weight) {
}
private static class Node {
String id;
Map<Node, Integer> edges;
Node(final String id) {
this.id = id;
this.edges = new HashMap<>();
}
private void initRageRanks(final double d) {
final int totalNodes = nodes.size();
if (totalNodes == 0) {
pageRanks = new HashMap<>();
return;
}
var myPageRanks = new HashMap<Node, Double>();
final double initRank = 1.0 / totalNodes;
for (final var n : nodes.values()) {
myPageRanks.put(n, initRank);
}
final int iterations = 100;
for (int i = 0; i < iterations; i++) {
final var newPageRanks = new HashMap<Node, Double>();
nodes.values().forEach(n -> newPageRanks.put(n, 0.0));
for (final var curr : nodes.values()) {
final int totalEdges = curr.edges.size();
for (final var entry : curr.edges.entrySet()) {
final Node neighbor = entry.getKey();
final double contribution = myPageRanks.get(curr) / totalEdges;
newPageRanks.put(neighbor, newPageRanks.get(neighbor) + contribution);
}
}
final double damplingTerm = (1.0 - d) / totalNodes;
nodes.values().forEach(n -> newPageRanks.put(n, damplingTerm + d * newPageRanks.get(n)));
myPageRanks = newPageRanks;
}
pageRanks = myPageRanks;
for (final var node : nodes.values()) {
if (node.edges.isEmpty()) {
nodes.values().stream().filter(n -> !n.equals(node))
.forEach(n -> pageRanks.put(n, pageRanks.get(n) + pageRanks.get(node) / (totalNodes - 1)));
pageRanks.put(node, 0.0);
}
}
void addEdge(final Node target) {
edges.put(target, edges.getOrDefault(target, 0) + 1);
}
@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
List<String> getDOTEdges(final Function<EdgeRecord, String> callback) {
final var dotEdges = new ArrayList<String>();
for (final var entry : edges.entrySet()) {
final Node target = entry.getKey();
final int weight = entry.getValue();
dotEdges.add(
callback.apply(new EdgeRecord(id, target.id, weight)) + ";\n");
}
return dotEdges;
}
@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
List<String> getDOTEdges() {
final var dotEdges = new ArrayList<String>();
for (final var entry : edges.entrySet()) {
final Node target = entry.getKey();
final int weight = entry.getValue();
dotEdges.add(
String.format("%s -> %s [label=\"%d\"];%n", id, target.id, weight));
}
return dotEdges;
}
}
}

601
app/src/main/java/fun/youthlic/GraphCLI.java
View file

@ -1,8 +1,8 @@
package fun.youthlic;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
@ -15,324 +15,333 @@ import java.util.Arrays;
import java.util.Random;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import org.jline.reader.LineReader;
import org.jline.reader.LineReaderBuilder;
import org.jline.reader.impl.DefaultParser;
import org.jline.terminal.Terminal;
import org.jline.terminal.TerminalBuilder;
/**
* Class for running in Commandline.
*/
@SuppressWarnings("ALL")
public class GraphCLI {
static String readFile(final String filename) {
String text = null;
try (BufferedReader inputReader = new BufferedReader(new FileReader(new File(filename)))) {
text = inputReader.lines().collect(Collectors.joining(System.lineSeparator()));
} catch (final IOException e) {
System.out.println("Error reading file: " + e.getMessage());
}
return text;
@SuppressFBWarnings({"DM_DEFAULT_ENCODING", "PATH_TRAVERSAL_IN"})
static String readFile(final String filename) {
String text = null;
try (BufferedReader inputReader = new BufferedReader(new FileReader(filename))) {
text = inputReader.lines().collect(Collectors.joining(System.lineSeparator()));
} catch (final IOException e) {
System.out.println("Error reading file: " + e.getMessage());
}
return text;
}
public static void main(final String[] args) {
GraphCLIHelper helper = null;
Terminal terminal = null;
try {
terminal = TerminalBuilder.builder().system(true).build();
} catch (final IOException e) {
e.printStackTrace();
System.exit(-1);
}
final LineReader reader = LineReaderBuilder.builder().terminal(terminal).parser(new DefaultParser())
.build();
while (true) {
final String line = reader.readLine("graph> ");
final var commands = line.split("[ \\t]+");
if (commands.length == 0) {
continue;
}
switch (commands[0]) {
case "load":
if (commands.length != 2) {
System.out.println("Usage: load <filename>");
} else {
final var text = readFile(commands[1]);
if (text == null) {
System.out.println("Load file failed; " + commands[1]);
continue;
}
helper = new GraphCLIHelper(text);
}
break;
case "help":
System.out.println("Available commands:");
System.out.println(" show");
System.out.println(" dot");
System.out.println(" help");
System.out.println(" exit");
System.out.println(" random-walk");
System.out.println(" load <filename>");
System.out.println(" page-rank <word>");
System.out.println(" bridge-words <word1> <word2>");
System.out.println(" new-text <text...>");
System.out.println(" shortest-path <word1> <word2>");
break;
case "shortest-path":
if (commands.length != 3) {
System.out.println("Usage: shortest-path <word1> <word2>");
} else if (helper == null) {
System.out.println("No graph loaded");
break;
} else {
try {
System.out.println(helper.calcShortestPath(commands[1], commands[2]));
} catch (IOException | InterruptedException e) {
System.out.println(e.getMessage());
}
}
break;
case "exit":
return;
case "random-walk":
if (commands.length != 1) {
System.out.println("Usage: random-walk");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
System.out.println(helper.randomWalk());
}
break;
case "new-text":
if (commands.length < 2) {
System.out.println("Usage: new-text <text...>");
} else if (helper == null) {
System.out.println("No graph loaded");
break;
} else {
System.out.println(helper.generateNewText(
String.join(" ", Arrays.asList(commands).subList(1, commands.length))));
}
break;
case "show":
if (commands.length != 1) {
System.out.println("Usage: show");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
GraphCLIHelper.showDirectedGraph(helper.graph);
}
break;
case "dot":
if (commands.length != 1) {
System.out.println("Usage: dot");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
System.out.println(helper.graph.toDOT());
}
case "page-rank":
if (commands.length != 2) {
System.out.println("Usage: page-rank <word>");
} else if (helper == null) {
System.out.println("No graph loaded");
} else {
final var pageRank = helper.calPageRank(commands[1]);
if (pageRank < 0.0) {
System.out.println("Invalid word");
} else {
System.out.println("PageRank of " + commands[1] + ": " + pageRank);
}
}
break;
case "bridge-words":
if (commands.length != 3) {
System.out.println("Usage: bridge-words <word1> <word2>");
} else if (helper == null) {
System.out.println("No graph loaded");
} else {
System.out.println(helper.queryBridgeWords(commands[1], commands[2]));
}
break;
default:
System.out.println("Unknown command: " + commands[0]);
break;
}
}
/**
* CommandLine entry point.
*
* @param args launch args
*/
public static void main(final String[] args) {
GraphCLIHelper helper = null;
Terminal terminal = null;
try {
terminal = TerminalBuilder.builder().system(true).build();
} catch (final IOException e) {
e.printStackTrace();
System.exit(-1);
}
final LineReader reader = LineReaderBuilder.builder().terminal(terminal)
.parser(new DefaultParser())
.build();
while (true) {
final String line = reader.readLine("graph> ");
final var commands = line.split("[ \\t]+");
if (commands.length == 0) {
continue;
}
switch (commands[0]) {
case "load":
if (commands.length != 2) {
System.out.println("Usage: load <filename>");
} else {
final var text = readFile(commands[1]);
if (text == null) {
System.out.println("Load file failed; " + commands[1]);
continue;
}
helper = new GraphCLIHelper(text);
}
break;
case "help":
System.out.println("Available commands:");
System.out.println(" show");
System.out.println(" dot");
System.out.println(" help");
System.out.println(" exit");
System.out.println(" random-walk");
System.out.println(" load <filename>");
System.out.println(" page-rank <word>");
System.out.println(" bridge-words <word1> <word2>");
System.out.println(" new-text <text...>");
System.out.println(" shortest-path <word1> <word2>");
break;
case "shortest-path":
if (commands.length != 3) {
System.out.println("Usage: shortest-path <word1> <word2>");
} else if (helper == null) {
System.out.println("No graph loaded");
break;
} else {
try {
System.out.println(helper.calcShortestPath(commands[1], commands[2]));
} catch (IOException | InterruptedException e) {
System.out.println(e.getMessage());
}
}
break;
case "exit":
return;
case "random-walk":
if (commands.length != 1) {
System.out.println("Usage: random-walk");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
System.out.println(helper.randomWalk());
}
break;
case "new-text":
if (commands.length < 2) {
System.out.println("Usage: new-text <text...>");
} else if (helper == null) {
System.out.println("No graph loaded");
break;
} else {
System.out.println(helper.generateNewText(
String.join(" ", Arrays.asList(commands).subList(1, commands.length))));
}
break;
case "show":
if (commands.length != 1) {
System.out.println("Usage: show");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
GraphCLIHelper.showDirectedGraph(helper.graph);
}
break;
case "dot":
if (commands.length != 1) {
System.out.println("Usage: dot");
} else {
if (helper == null) {
System.out.println("No graph loaded");
break;
}
System.out.println(helper.graph.toDOT());
}
break;
case "page-rank":
if (commands.length != 2) {
System.out.println("Usage: page-rank <word>");
} else if (helper == null) {
System.out.println("No graph loaded");
} else {
final var pageRank = helper.calPageRank(commands[1]);
if (pageRank < 0.0) {
System.out.println("Invalid word");
} else {
System.out.println("PageRank of " + commands[1] + ": " + pageRank);
}
}
break;
case "bridge-words":
if (commands.length != 3) {
System.out.println("Usage: bridge-words <word1> <word2>");
} else if (helper == null) {
System.out.println("No graph loaded");
} else {
System.out.println(helper.queryBridgeWords(commands[1], commands[2]));
}
break;
default:
System.out.println("Unknown command: " + commands[0]);
break;
}
}
}
}
/**
* Helper class for CommandLine.
*/
@SuppressWarnings("ALL")
class GraphCLIHelper {
Graph graph;
Graph graph;
GraphCLIHelper(final String text) {
graph = new Graph(text);
GraphCLIHelper(final String text) {
graph = new Graph(text);
}
static void showDirectedGraph(final Graph graph) {
final ProcessBuilder processBuilder = new ProcessBuilder("graph-easy", "--as", "ascii");
processBuilder.redirectErrorStream(true);
Process process;
try {
process = processBuilder.start();
} catch (final IOException e) {
System.err.println("Failed to start process");
e.printStackTrace();
return;
}
static void showDirectedGraph(final Graph G) {
final ProcessBuilder processBuilder = new ProcessBuilder("graph-easy", "--as", "ascii");
processBuilder.redirectErrorStream(true);
Process process = null;
try {
process = processBuilder.start();
} catch (final IOException e) {
System.err.println("Failed to start process");
e.printStackTrace();
}
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(process.getOutputStream(), StandardCharsets.UTF_8))) {
writer.write(G.toDOT());
writer.flush();
} catch (final IOException e) {
System.err.println("Failed to write to process");
e.printStackTrace();
}
final StringBuilder output = new StringBuilder();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
output.append(line).append(System.lineSeparator());
}
} catch (final IOException e) {
System.err.println("Failed to read from process");
e.printStackTrace();
}
try {
final int exitCode = process.waitFor();
if (exitCode != 0) {
System.err.println("Process exited with code " + exitCode);
} else {
System.out.println(output.toString());
}
} catch (final InterruptedException e) {
System.err.println("Process interrupted");
e.printStackTrace();
}
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(process.getOutputStream(), StandardCharsets.UTF_8))) {
writer.write(graph.toDOT());
writer.flush();
} catch (final IOException e) {
System.err.println("Failed to write to process");
e.printStackTrace();
}
final StringBuilder output = new StringBuilder();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
output.append(line).append(System.lineSeparator());
}
} catch (final IOException e) {
System.err.println("Failed to read from process");
e.printStackTrace();
}
try {
final int exitCode = process.waitFor();
if (exitCode != 0) {
System.err.println("Process exited with code " + exitCode);
} else {
System.out.println(output.toString());
}
} catch (final InterruptedException e) {
System.err.println("Process interrupted");
e.printStackTrace();
}
}
String queryBridgeWords(final String word1, final String word2) {
final var option = graph.findBridgeWords(word1, word2);
if (option.isEmpty()) {
return "No " + word1 + " or " + word2 + " in the graph!";
}
final var bridgeWords = option.get();
if (bridgeWords.isEmpty()) {
return "No bridge words from " + word1 + " to " + word2 + "!";
}
final var output = new StringBuilder();
output.append("The bridge words from ").append(word1).append(" to ").append(word2).append(" are: ");
for (int i = 0; i < bridgeWords.size(); i++) {
output.append(bridgeWords.get(i));
if (i < bridgeWords.size() - 2) {
output.append(", ");
} else if (i == bridgeWords.size() - 2) {
output.append(", and ");
} else {
output.append(".");
}
String queryBridgeWords(final String word1, final String word2) {
final var option = graph.findBridgeWords(word1, word2);
if (option.isEmpty()) {
return "No " + word1 + " or " + word2 + " in the graph!";
}
final var bridgeWords = option.get();
if (bridgeWords.isEmpty()) {
return "No bridge words from " + word1 + " to " + word2 + "!";
}
final var output = new StringBuilder();
output.append("The bridge words from ").append(word1).append(" to ").append(word2).append(" are: ");
for (int i = 0; i < bridgeWords.size(); i++) {
output.append(bridgeWords.get(i));
if (i < bridgeWords.size() - 2) {
output.append(", ");
} else if (i == bridgeWords.size() - 2) {
output.append(", and ");
} else {
output.append(".");
}
}
return output.toString();
}
@SuppressFBWarnings({"PREDICTABLE_RANDOM", "DMI_RANDOM_USED_ONLY_ONCE"})
String generateNewText(final String inputText) {
final var output = new StringBuilder();
final var words = inputText.split("\\s+");
for (int i = 0; i < words.length; i++) {
output.append(words[i]);
if (i < words.length - 1) {
output.append(" ");
final var option = graph.findBridgeWords(words[i], words[i + 1]);
if (option.isPresent() && !option.get().isEmpty()) {
final var bridgeWords = option.get();
final Random random = new Random();
final int wordIndex = random.nextInt(bridgeWords.size());
output.append(option.get().get(wordIndex)).append(" ");
}
}
}
return output.toString();
}
String calcShortestPath(final String word1, final String word2)
throws IOException, InterruptedException {
final ProcessBuilder processBuilder = new ProcessBuilder("graph-easy", "--as", "ascii");
processBuilder.redirectErrorStream(true);
Process process = null;
process = processBuilder.start();
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(process.getOutputStream(), StandardCharsets.UTF_8))) {
writer.write(calcShortestPathToDOT(word1, word2));
writer.flush();
}
final StringBuilder output = new StringBuilder();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
output.append(line).append(System.lineSeparator());
}
}
try {
final int exitCode = process.waitFor();
if (exitCode != 0) {
throw new IOException("Process exited with code " + exitCode);
} else {
return output.toString();
}
} catch (final InterruptedException e) {
throw e;
}
}
String generateNewText(final String inputText) {
final var output = new StringBuilder();
final var words = inputText.split("\\s+");
for (int i = 0; i < words.length; i++) {
output.append(words[i]);
if (i < words.length - 1) {
output.append(" ");
final var option = graph.findBridgeWords(words[i], words[i + 1]);
if (option.isPresent() && !option.get().isEmpty()) {
final var bridgeWords = option.get();
final Random random = new Random();
final int wordIndex = random.nextInt(bridgeWords.size());
output.append(option.get().get(wordIndex)).append(" ");
}
}
}
return output.toString();
String calcShortestPathToDOT(final String word1, final String word2) {
var option = graph.findShortestPath(word1, word2);
if (option.isEmpty()) {
return "No " + word1 + " or " + word2 + " in the graph";
} else {
final var path = option.get();
if (path.isEmpty()) {
return "No path from " + word1 + " to " + word2;
}
return graph.toDOT(r -> String.format(
"\"%s\" -> \"%s\" [label=\"%d\"%s]",
r.node1() + (path.contains(r.node1()) ? "~" : ""),
r.node2() + (path.contains(r.node2()) ? "~" : ""),
r.weight(),
(path.contains(r.node1()) && path.contains(r.node2())
&& IntStream.range(0, path.size() - 1).anyMatch(
i -> path.get(i).equals(r.node1()) && path.get(i + 1).equals(r.node2())))
? ",color=\"red\""
: ""));
}
}
String calcShortestPath(final String word1, final String word2)
throws IOException, InterruptedException {
final ProcessBuilder processBuilder = new ProcessBuilder("graph-easy", "--as", "ascii");
processBuilder.redirectErrorStream(true);
Process process = null;
try {
process = processBuilder.start();
} catch (final IOException e) {
throw e;
}
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(process.getOutputStream(), StandardCharsets.UTF_8))) {
writer.write(calcShortestPathToDOT(word1, word2));
writer.flush();
} catch (final IOException e) {
throw e;
}
final StringBuilder output = new StringBuilder();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
output.append(line).append(System.lineSeparator());
}
} catch (final IOException e) {
throw e;
}
try {
final int exitCode = process.waitFor();
if (exitCode != 0) {
throw new IOException("Process exited with code " + exitCode);
} else {
return output.toString();
}
} catch (final InterruptedException e) {
throw e;
}
}
Double calPageRank(final String word) {
return graph.computePageRank(word);
}
String calcShortestPathToDOT(final String word1, final String word2) {
var option = graph.findShortestPath(word1, word2);
if (option.isEmpty()) {
return "No " + word1 + " or " + word2 + " in the graph";
} else {
final var path = option.get();
if (path.isEmpty()) {
return "No path from " + word1 + " to " + word2;
}
return graph.toDOT(r -> String.format(
"\"%s\" -> \"%s\" [label=\"%d\"%s]",
r.node1() + (path.contains(r.node1()) ? "~" : ""),
r.node2() + (path.contains(r.node2()) ? "~" : ""),
r.weight(),
(path.contains(r.node1()) && path.contains(r.node2()) &&
IntStream.range(0, path.size() - 1).anyMatch(
i -> path.get(i).equals(r.node1()) && path.get(i + 1).equals(r.node2())))
? ",color=\"red\""
: ""));
}
}
Double calPageRank(final String word) {
final var pageRank = graph.computePageRank(word);
return pageRank;
}
String randomWalk() {
final var text = graph.randomWalk().stream().collect(Collectors.joining(" "));
final Path path = Paths.get("output.txt");
try {
Files.write(path, text.getBytes());
} catch (final IOException e) {
System.err.println("Failed to write to file");
e.printStackTrace();
}
return text;
@SuppressFBWarnings("DM_DEFAULT_ENCODING")
String randomWalk() {
final var text = String.join(" ", graph.randomWalk());
final Path path = Paths.get("output.txt");
try {
Files.write(path, text.getBytes());
} catch (final IOException e) {
System.err.println("Failed to write to file");
e.printStackTrace();
}
return text;
}
}

1
flake.nix
View file

@ -23,6 +23,7 @@
kotlin-language-server
ktfmt
jdt-language-server
checkstyle
graph-easy
graphviz

188
gradlew.bat vendored
View file

@ -1,94 +1,94 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@rem SPDX-License-Identifier: Apache-2.0
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@rem SPDX-License-Identifier: Apache-2.0
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega