题解 | #二分查找-I#

自己第一遍写的

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
        return search(nums,0,nums.length-1,target);  
    }
    
    public int search(int[] nums, int left, int right,int target){
        if(left > right){
            return -1;
        }
        int mid = left + (right - left)/2;
        if(nums[mid] == target){
            return mid;
        }else if (target < nums[mid]){
            return search(nums,left,mid-1,target);
        }else{
            return search(nums,mid+1,right,target);
        }
    }
}