编辑代码

#include <stdio.h>
#include <string.h>
 
#define N 256
int f(const char* s1, const char* s2)
{
 	int a[N][N];
	int len1 = strlen(s1);
	int len2 = strlen(s2);
	int i, j;
	
	memset(a, 0, sizeof(int)*N*N);
	int max = 0;
	for(i=1; i<=len1; i++){
		for(j=1; j<=len2; j++){
			if(s1[i-1] == s2[j-1]) {
				a[i][j] = a[i-1][j-1] + 1; 
				if(a[i][j] > max) 
					max = a[i][j];
			}
		}
	}
	
	return max;
}
 
int main()
{
	printf("%d\n", f("FOSHSTS", "FOSSTSS"));
	return 0;
}