本文介绍了按值排序哈希表的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果我有一个Hashtable,我想按值排序,即:整数按降序排列。如何执行此操作并能够打印所有键值对?
If I have a Hashtable and I want to sort it by the value, i.e: integer in a descending order. How can I do this and be able to print through all of the key - value pair?
推荐答案转移为列表并对其进行排序:
Transfer as List and sort it:
public static void sortValue(Hashtable<?, Integer> t){ //Transfer as List and sort it ArrayList<Map.Entry<?, Integer>> l = new ArrayList(t.entrySet()); Collections.sort(l, new Comparator<Map.Entry<?, Integer>>(){ public int compare(Map.Entry<?, Integer> o1, Map.Entry<?, Integer> o2) { return o1.getValue()pareTo(o2.getValue()); }}); System.out.println(l); }更多推荐
按值排序哈希表
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