hashmap先按照value从大到小排序,value相等时按照key从小到大排序. [2]是从小到大排序,在[2]代码基础上交换o1,o2位置即可. 代码中用到[1]中提到的在value相等时再比较key的方法. static Map sortByValue(Map map) { List list = new LinkedList(map.entrySet()); Collections.sort(list, new Comparator() { public int compare(Obj
#include<stdio.h> int main() { /*简单选择排序:从大到小:一共比较sizeArr-1轮,每一轮的第一个数是arr[i],第一个数依次和它后面的每个数比较*/ int arr[10]={20,10,7,15,58,2,45,122,4,52}; int sizeArr=sizeof(arr)/sizeof(arr[0]);//10 printf("交换前:\n"); for(int i=0;i<sizeArr;i++) { printf(
题目链接:http://codeforces.com/problemset/problem/892/A 具体的Java 中 sort实现降序排序:https://www.cnblogs.com/youpeng/p/10546797.html Ac代码: import java.util.Comparator; import java.util.Scanner; import static java.util.Arrays.sort; public class Main { public stat
import functools class Solution: # @param {integer[]} nums # @return {string} def largestNumber(self, nums): def comparator(x, y): # inputs are string representations of non-negative ints if x+y > y+x: # no need to convert to int because x+y and y+x