?? scoredcomparator.java
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package edu.stanford.nlp.util;import java.util.*;/** * ScoredComparator: Interface for comparing scored things. * * @author Dan Klein * @version 12/4/00 */final public class ScoredComparator implements Comparator { public static final boolean ASCENDING = true; public static final boolean DESCENDING = false; public static final ScoredComparator ASCENDING_COMPARATOR = new ScoredComparator(ASCENDING); public static final ScoredComparator DESCENDING_COMPARATOR = new ScoredComparator(DESCENDING); private final boolean ascending; public ScoredComparator() {ascending = ASCENDING;} public ScoredComparator(boolean ascending) { this.ascending = ascending; } public int compare(Object o1, Object o2) { if (o1 == o2) return 0; /*if (! (o1 instanceof Scored) || ! (o2 instanceof Scored)) throw new ClassCastException();*/ double d1 = ((Scored)o1).score(); double d2 = ((Scored)o2).score(); if(ascending) { if (d1 < d2) return -1; if (d1 > d2) return 1; } else { if (d1 < d2) return 1; if (d1 > d2) return -1; } return 0; } public boolean equals(Object o) { if (o==this) return true; if (o instanceof ScoredComparator) { ScoredComparator sc = (ScoredComparator) o; if (ascending == sc.ascending) return true; } return false; }}?? 快捷鍵說明
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