题解 | #二分查找-I#

import java.util.*;

public class Solution { /** * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可 * * * @param nums int整型一维数组 * @param target int整型 * @return int整型 */ public int search (int[] nums, int target) { // write code here int start = 0; int end = nums.length-1; int mid=(start+end)/2; int index=-1; while (start<=end){ if(target>nums[mid]){ start=mid+1; }else if(target<nums[mid]){ end=mid-1; }else { index=mid; break; } mid=(start+end)/2; } return index; } }