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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin>>t;
  7. 	while(t--){
  8. 		string s;
  9. 		cin>>s;
  10. 		for(int i=0;i<s.length()-1;i++){
  11. 			for(int j=i+1;j<s.length()-1;j++){
  12. 				if(s[i]==s[j]&&s[j]!=s[i+1]){
  13. 					cout<<s[i]<<"\n";
  14. 					break;
  15. 				}
  16.  
  17. 			}
  18. 		}
  19. 	}
  20. 	return 0;
  21. }
Success #stdin #stdout 0.01s 5432KB
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stdin
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4
datastructures
algorithms
bllaacckkboard
hackerrank
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a
t
t
r
u
b
a
a
https://ideone.com/MkbEi1
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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