提交记录 15832 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
_wangXiWen	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C++	210 B

提交时间	评测时间
2021-02-07 11:56:17	2021-02-07 11:56:20

代码

#include<bits/stdc++.h>
int binary_search(const unsigned *a, int n, unsigned x)
{
	int l=0;r=n-1;
	while(l<=r)
	{
		int mid=(l+r)>>1;
		if(a[mid]<x) l=mid+1;
		else if(a[mid]>x) r=mid-1;
		else return mid;
	}
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/6e8868b668f811eb8d96fdb470a28eb4/contestant.cpp: In function ‘int binary_search(const unsigned int*, int, unsigned int)’:
jp_data/tasks/6e8868b668f811eb8d96fdb470a28eb4/contestant.cpp:4:10: error: ‘r’ was not declared in this scope
    4 |  int l=0;r=n-1;
      |          ^

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