回答編集履歴
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answer
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@@ -1,68 +1,1 @@
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```Java
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Random;
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1
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方向性が違うようなので、回答は消します
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final static Integer WAIT = 50;
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public static void main(String[] args) {
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Map<Integer, Integer> map = new HashMap<Integer, Integer>();
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Random rnd = new Random();
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for ( int y = 0; y < 100; y++ ) {
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int r = rnd.nextInt(100) + 1;
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map.put(new Integer(y),new Integer(r));
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}
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List<Map.Entry<Integer,Integer>> entries = shuffle(map);
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System.out.println("重み付け前");
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int i = 0;
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for (Entry<Integer,Integer> s : entries) {
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int r = rnd.nextInt(100) + 1;
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if (i < 10) {
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System.out.println(s.getKey() + ":" + s.getValue());
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i++;
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map.replace(s.getKey(), new Integer(r + WAIT.intValue()));
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} else {
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map.replace(s.getKey(), new Integer(r));
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}
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}
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List<Map.Entry<Integer,Integer>> entries2 = shuffle(map);
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System.out.println("重み付け後");
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i = 0;
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for (Entry<Integer,Integer> s : entries2) {
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if (i < 10) {
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System.out.println(s.getKey() + ":" + s.getValue());
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i++;
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}
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}
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}
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public static List<Map.Entry<Integer,Integer>> shuffle(Map<Integer, Integer> map) {
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List<Map.Entry<Integer,Integer>> entries = new ArrayList<Map.Entry<Integer,Integer>>(map.entrySet());
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Collections.sort(entries, new Comparator<Map.Entry<Integer,Integer>>() {
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@Override
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public int compare(
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Entry<Integer,Integer> entry1, Entry<Integer,Integer> entry2) {
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return ((Integer)entry2.getValue()).compareTo((Integer)entry1.getValue());
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}
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});
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return entries;
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}
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}
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```
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68
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動作確認はしましたが、ちょっと自身ないっす
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