//只是用了简单快速排序 讲数组进行排序最后输出前k个 import java.util.ArrayList; public class Solution { public ArrayList<Integer> GetLeastNumbers_Solution(int [] input, int k) { ArrayList arr = new ArrayList(); if(k>input.length){ return arr; } quickSort(input,0,input.length-1); for(int i =0 ;i<k;i++){ arr.add(...