摘要:
1. Arrays.sort(T[] a)是对数组元素按字典序进行升序排列 import java.util.*; public class Main { public static void main(String[] args){ Integer[] arr = {5,4,7,9,2,12,54 阅读全文
摘要:
1 寻找数组的中心索引 class Solution { public int pivotIndex(int[] nums) { if(nums.length==1){return 0;} if(nums.length==0){return -1;} int left=0; for(int i=0; 阅读全文
摘要:
1 只遍历一遍数组 public class ThroughTheArray{ public static void main(String[] args) { int[] arr = {12,4,1,66,54,6,74,-3}; for (int i = 0; i < arr.length; i 阅读全文