【PTA】- 1050 String Subtraction (20 分)

題目鏈接： https://pintia.cn/problem-sets/994805342720868352/problems/type/7

思路： 暴力美學+水題，注意字符串的處理

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <vector>
#include <map>
using namespace std;
#define inf 0x3f3f3f3f
const int maxn = 10000 + 10;
int main(int argc, const char **argv)
{
    string s1, s2;
    getline(cin, s1);
    getline(cin, s2);

    int len = s1.length();
    int len2 = s2.length();
    int flag[maxn];
    for (int i = 0; i < s1.length(); i++)
    {
        flag[i] = 0;
    }
    for (int i = 0; i < len; i++)
    {
        for (int j = 0; j < len2; j++)
        {
            if (s1[i] == s2[j])
                flag[i] = 1;
        }
    }
    for (int i = 0; i < len; i++)
    {
        if (flag[i] == 0)
        {
            cout << s1[i];
        }
        else
        {
            continue;
        }
    }
    cout << endl;

    return 0;
}