一本通 1298：计算字符串距离

计算字符串距离

同样也是字符串距离计算问题，参考一本通 1276：【例9.20】编辑距离

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Code:

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
//Mystery_Sky
//
#define INF 0x3f3f3f3f
#define M 3000
int f[M][M];
int len_a, len_b;
char a[M], b[M];
int main() {
	int t;
	scanf("%d", &t);
	getchar();
	while(t--) {
		memset(f, 0, sizeof(f));
		scanf("%s", a);
		getchar();
		scanf("%s", b);
		len_a = strlen(a);
		len_b = strlen(b);
		for(int i = 1; i <= len_a; i++) f[i][0] = i;
		for(int i = 1; i <= len_b; i++) f[0][i] = i; 
		for(int i = 1; i <= len_a; i++) {
			for(int j = 1; j <= len_b; j++) {
				if(a[i-1] == b[j-1]) {
					f[i][j] = f[i-1][j-1];
				}
				else f[i][j] = min(min(f[i-1][j], f[i][j-1]), f[i-1][j-1]) + 1;
			}
		}
		printf("%d\n", f[len_a][len_b]);
	}
	return 0;
}