Bài toán. Cho xâu ký tự s. Đếm ký tự a và xóa ký tự này trong xâu s, hiển thị xâu s sau khi xóa ký tự a. Ví dụ:
|
COUTS.INP |
COUTS.OUT |
|
abaebcda |
3 bebcd |
Code tham khảo:
#include <iostream>
#include <cstring>
using namespace std;
int main() {
freopen("COUTS.INP","r",stdin);
freopen("COUTS.OUT","w",stdout);
string s;
cin>>s;
int dem = 0;
for(int i=0; i<=s.length()-1; i++)
if(s[i] == 'a') dem++;
int i = 0;
int k = 1;
while(i <= s.length()-1) {
if(s[i] == 'a') s.erase(i,1);
else i++;
}
cout << dem << endl;
for(int i=0; i<=s.length()-1; i++)
cout<<s[i];
return 0;
}
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