int ***m = new int**[strLen];
for (int i = 0; i < strLen; i++)
m[i] = new int*[strLen];
for (int i = 0; i < strLen; i++)
for (int j = 0; j < strLen; j++)
m[i][j] = new int[3];
memset的两种写法:
1. memset(m, 0, sizeof(int)*strLen*strLen*3);
2. memset(m, 0, sizeof(m));
那种是正确的???