poj2629

简单题

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
using namespace std;

#define maxl 1005
#define maxn 30

int f[maxn], g[maxn];
char a[maxl], b[maxl];

void make(char *st, int f[])
{
    int len = strlen(st);
    for (int i = 0; i < len; i++)
        f[st[i] - 'a']++;
}

void work()
{
    for (int i = 0; i < 26; i++)
    {
        int x = min(f[i], g[i]);
        for (int j = 0; j < x; j++)
            putchar(i + 'a');
    }
    putchar('\n');
}

int main()
{
    //freopen("t.txt", "r", stdin);
    while (gets(a))
    {
        gets(b);
        memset(f, 0, sizeof(f));
        memset(g, 0, sizeof(g));
        make(a, f);
        make(b, g);
        work();
    }
    return 0;
}