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  • NYOJ 5 Binary String Matching

    Binary String Matching

    时间限制:3000 ms  |  内存限制:65535 KB
    难度:3
     
    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 

     1  
     2 #include<iostream>
     3 #include<string>
     4 using namespace std;
     5 int main()
     6 {
     7     string a,b;
     8     int n;cin>>n;
     9     while(n--)
    10     {
    11         cin>>a>>b;
    12         int count=0;
    13         unsigned int num=b.find(a,0);
    14         while(num!=string::npos)
    15         {
    16             count++;
    17             num=b.find(a,num+1);
    18         }
    19         cout<<count<<endl;
    20     }
    21 }
    22         


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  • 原文地址:https://www.cnblogs.com/ljwTiey/p/4303027.html
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