提交记录 15105 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
lny	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C++	148 B

提交时间	评测时间
2020-11-25 10:55:03	2020-11-25 10:55:04

代码

int binary_search(const unsigned *a, int n, unsigned x)
{
int *p=a+n;
	for(int i = 1<<26; i ; i>>=1)
		if(p-i >= a&&(x<=p[-i]))p-=i;
	return p-a;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/9dcff6c02ec911eb8d96fdb470a28eb4/contestant.cpp: In function ‘int binary_search(const unsigned int*, int, unsigned int)’:
jp_data/tasks/9dcff6c02ec911eb8d96fdb470a28eb4/contestant.cpp:3:9: error: invalid conversion from ‘const unsigned int*’ to ‘int*’ [-fpermissive]
    3 | int *p=a+n;
      |        ~^~
      |         |
      |         const unsigned int*
jp_data/tasks/9dcff6c02ec911eb8d96fdb470a28eb4/contestant.cpp:5:13: error: comparison between distinct pointer types ‘int*’ and ‘const unsigned int*’ lacks a cast [-fpermissive]
    5 |   if(p-i >= a&&(x<=p[-i]))p-=i;
      |             ^
jp_data/tasks/9dcff6c02ec911eb8d96fdb470a28eb4/contestant.cpp:6:10: error: invalid operands of types ‘int*’ and ‘const unsigned int*’ to binary ‘operator-’
    6 |  return p-a;
      |         ~^~
      |         | |
      |         | const unsigned int*
      |         int*