subString,
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subString,
描述 Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as a substring of B? For example, the text string B is ‘1001110110’ while the pattern string A is ‘11’, you should output 3, because the pattern A appeared at the posit- 输入
- The first line consist only one integer N, indicates N cases follows. In each case, there are two lines, the first line gives the string A, length (A) <= 10, and the second line gives the string B, length (B) <= 1000. And it is guaranteed that B is always longer than A.
- 输出
- For each case, output a single line consist a single integer, tells how many times do B appears as a substring of A.
- 样例输入
-
3 11 1001110110 101 110010010010001 1010 110100010101011
- 样例输出
-
3 0 3
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我是利用暴力的解法但是奇怪的是竟然AC过了
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填上我的代码如下
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#include<iostream> #include<string> using namespace std; int times(char*str,char* substring) { int time = 0; while(*str) { char *copstring = substring; while(*copstring) { if(*copstring!=*str) { break; } copstring++; str++; } if(!*copstring) { ++time; } str = str - (copstring-substring)+1; copstring = substring; } return time; } int main() { int Times; cin>>Times; while(Times--) { char str[1000]; char substr[10]; cin>>substr; cin>>str; cout<<times(str,substr)<<endl; } return 0; }
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