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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	string a;
  7. 	cin>>a;   //string consisting of only a and b
  8. 	int totalA=0;
  9. 	int totalB=0;
  10. 	int n=a.size();
  11. 	for(int i=0;i<n;i++){
  12. 		if(a[i]=='a'){
  13. 			totalA++;
  14. 		}
  15. 		else{
  16. 			totalB++;
  17. 		}
  18. 	}
  19. 	int mini=1e9;
  20. 	int Ca=0;
  21. 	int Cb=0;
  22. 	for(int i=0;i<n;i++){
  23. 		int countA=0;
  24. 		int countB=0;
  25. 		for(int j=i;j<n;j++){
  26. 			if(a[j]=='a'){
  27. 				countA++;
  28. 			}
  29. 			else{
  30. 				countB++;
  31. 			}
  32. 			Ca=totalA-countA;   //total count of a after removing from substring
  33. 			Cb=totalB-countB;
  34. 			if(Ca==Cb){
  35. 				int len=j-i+1;
  36. 				mini=min(mini,len);
  37.  
  38. 			}
  39. 			Ca=0;
  40. 			Cb=0;
  41. 		}
  42. 	}
  43. 	cout<<"The minimum substring containing equal number of a and b is:"<<mini;
  44.  
  45. 	return 0;
  46. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
4
aabb
stdout 
The minimum substring containing equal number of a and b is:1
https://ideone.com/V064gJ
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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