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- #include <bits/stdc++.h>
- using namespace std;
- int main()
- {
- string str1, str2;
- while( getline(cin, str1)){ //輸入str1
- getline(cin, str2); //輸入str2
- for( int i = 'a'; i <= 'z'; i++){ //從字母'a'開始找
- for( int j = 0; j < str1.size(); j++){ //從找str1有沒有a
- if( (char)i == str1[j]){ //如果有的話
- for( int k = 0; k < str2.size(); k++){ //找str2有沒有a
- if( (char)i == str2[k]){ //如果有的話
- cout << (char)i; //印出'a'
- str2.erase(k,1); //把str2從頭找到的第一個'a'刪掉,免得下次又找到他
- break; //跳出str2,再從str1的下一位開始找有沒有'a'
- }
- }
- }
- }
- }
- cout << endl; //記得換行
- }
- return 0;
- }
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