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  1. #include <iostream>
  2. #include<cstring>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	string s="abcdseaw";
  7. 	int n=s.length();
  8. 	int last_index[26];
  9. 	memset(last_index,-1,sizeof(last_index));
  10. 	int l=0,ans=1;
  11. 	for(int i=0;i<n;i++){
  12. 		int c=s[i]-'a';
  13. 		l=max(l,last_index[c]+1);
  14. 		ans=max(ans,i-l+1);
  15. 		last_index[c]=i;
  16. 	}
  17. 	cout<<ans<<'\n';
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/IpLn3K
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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