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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		Scanner sc = new Scanner(System.in);
  14. 		int n = sc.nextInt();
  15. 		String[] words = new String[n]; 
  16. 		for(int i=0; i<n; i++){
  17. 			words[i] = sc.next();
  18. 		}
  19. 		List<String> list = commonChars(words);
  20. 		System.out.println(list);
  21.  
  22. 	}
  23.  
  24. 	public static List<String> commonChars(String[] words){
  25. 		List<String> list = new ArrayList<>();
  26. 		char []hash = new char[26];
  27. 		for(char c : words[0].toCharArray()){
  28. 			hash[c - 'a']++;
  29. 		}
  30.  
  31. 		for(int i=1; i<words.length; i++){
  32. 			String str = words[i];
  33. 			char temp[] = new char[26];
  34. 			for(char c : str.toCharArray()){
  35. 				temp[c - 'a']++;
  36. 			}
  37.  
  38. 			for(int j=0; j<26; j++){
  39. 				hash[j] = (char)Math.min((int)hash[j], (int)temp[j]);
  40. 				temp[j] = 0;
  41. 			}
  42. 		}
  43.  
  44. 		for(int i=0; i<26; i++){
  45. 			int j = hash[i];
  46. 			while(j!=0){
  47. 				char c = (char)(i + 'a');
  48. 				list.add(c+"");
  49. 				j--;
  50. 			}
  51. 		}
  52. 		return list;
  53. 	}
  54. }
Success #stdin #stdout 0.17s 60824KB
comments (?)
stdin 
3
bella label roller
stdout 
[e, l, l]
https://ideone.com/QH2Mrj
language:
Java (HotSpot 12)
created:
11 days ago
visibility:
public

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