提交记录 720 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
frf	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C	226 B

提交时间	评测时间
2018-06-20 16:38:59	2020-07-31 20:42:04

代码

int binary_search(const unsigned *a,const int n, unsigned x)
{
	register unsigned l = 0, r = 99999999;
	for(;;) {
		#define mid ((l&r)+(l|r)>> 1)
		if ( a[mid] == x ) return mid;
		a[mid] > x ? r = mid - 1 : l = mid + 1;
	}
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/3b6a4bf8d32b11ea899e00163e04388b/contestant.c: In function ‘binary_search’:
jp_data/tasks/3b6a4bf8d32b11ea899e00163e04388b/contestant.c:7:32: error: lvalue required as left operand of assignment
    7 |   a[mid] > x ? r = mid - 1 : l = mid + 1;
      |                                ^

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