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flashinggg 发布时间：2021-12-09 10:25:37 ，浏览量：1

2021.12.9 星期四 NO.704 二分查找

看到有序数组，就可以判断可不可以用二分法。

注意对区间的定义：

1.[lo,hi] 左右都闭

再做一遍，发现会出现else if 和else这里的问题，注意多个if和else在一起时的逻辑关系。

class Solution {
public:
  int search(vector& nums, int target) {
  int lo,hi,mid;
  lo=0,hi=nums.size()-1,mid=0;
    while(lo


    
        



        
        
            
                
                
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	请求信息 : 2025-09-18 12:59:22 HTTP/2.0 GET : /home/article/detail/id/414063.html
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内存开销 : 1,920.71 kb
查询信息 : 16 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
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	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
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[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 40 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 101 行.
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