Binary String Matching http://acm.nyist.net/JudgeOnline/problem.php?pid=5
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
- 来源
- 网络
-
#include<stdio.h> #include<string.h> int main() { int n; scanf("%d",&n); while(n--) { char a[15]; char b[1010]; int i,j,la,lb,p,count=0; scanf("%s",a); scanf("%s",b); la=strlen(a); lb=strlen(b); for(i=0;i<lb;i++) { p=1; if(a[0]==b[i]) { for(j=i;j<i+la;j++) { if(a[j-i]!=b[j]) { p=0; break; } } if(p==1) count++; } } printf("%d\n",count); } return 0; }