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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. bool haveCommonLetters(string& str1,string& str2) {
  5.     unordered_set<char> charSet;
  6.     for (char c : str1) {
  7.         charSet.insert(c);
  8.     }
  9.  
  10.     for (char c : str2) {
  11.         if (charSet.find(c) != charSet.end()) {
  12.             return true;
  13.         }
  14.     }
  15.  
  16.     return false;
  17. }
  18.  
  19.  
  20. int main() {
  21. 	// your code goes here
  22. 	vector<string>a={"hello","hi"};
  23. 	vector<string>b={"world","bye"};
  24.  
  25. 	for(int i=0;i<a.size();i++){
  26. 		if(haveCommonLetters(a[i], b[i])){
  27. 			cout<<"YES\n";
  28. 		}
  29. 		else{
  30. 			cout<<"NO\n";
  31. 		}
  32. 	}
  33. 	return 0;
  34. }
Success #stdin #stdout 0s 5304KB
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YES
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https://ideone.com/jzjjGL
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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