Arrays.sort()——逆序

package utils;import java.util.*;class ComparatorInteger implements Comparator<Integer> {@Override   //使得逆序      o1比o2小，返回正数——需要调换位置public int compare(Integer o1, Integer o2) {return o1 <= o2 ? 1 : -1;}
}class ComparatorChar implements Comparator<Character> {@Override   //使得逆序      o1比o2小（ASCII码），返回正数——需要调换位置public int compare(Character o1, Character o2) {return o1 <= o2 ? 1 : -1;}
}public class Main {public static void main(String[] args) {Comparator compInte = new ComparatorInteger();Comparator compChar = new ComparatorChar();Integer nums[] = {6, 1, 3, 5};Arrays.sort(nums, compInte);    //逆序：6 5 3 1Character chars[] = {'c', 'a', 'b'};  Arrays.sort(chars, compChar);    //逆序：c b a}
}