10252 - Common Permutation

题意:按字典序输出二个字符串相同的元素

算法:hash标记

连接：点击打开链接

#include <stdio.h>int main ( ){char str[1005], ch[1005];while ( gets ( str ) ){gets ( ch );int hash[26] = { 0 }, visit[26] = { 0 }, i = 0;while ( str[i] )hash[str[i++]-'a']++;i = 0;while ( ch[i] )visit[ch[i++]-'a']++;for ( i = 0; i < 26; i++ ){int x = hash[i] > visit[i] ? visit[i] : hash[i];while ( x-- )printf ( "%c", i + 'a' );}puts ( "" );}return 0;}