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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. 		String input = "7888885466662716666";
  13.         addToList(input);
  14. 	}
  15. 	public static void addToList(String input) {
  16.         String temp;
  17.         List<String> l = new ArrayList<>();
  18.         for (int i = 0; i < input.length() - 1; i++) {
  19.             if (input.charAt(i) == input.charAt(i + 1)) {
  20.                 temp = String.valueOf(input.charAt(i));
  21.                 for (int j = i; j < input.length() - 1; j++) {
  22.                     if (input.charAt(j) == input.charAt(j + 1)) {
  23.                         temp += String.valueOf(input.charAt(j + 1));
  24.                         if (j == input.length() - 2) {
  25.                             i = j;
  26.                             if (!temp.isEmpty()) {
  27.                                 l.add(temp);
  28.                             }
  29.                             break;
  30.                         }
  31.                     } else {
  32.                         i = j - 1;
  33.                         if (!temp.isEmpty()) {
  34.                             l.add(temp);
  35.                         }
  36.                         break;
  37.                     }
  38.                 }
  39.             }
  40.         }
  41.         System.out.println(getHighestOccurences(l));
  42.     }
  43.  
  44.     public static String getHighestOccurences(List<String> list) {
  45.         int max = 0;
  46.         int curr;
  47.         String currKey = null;
  48.         Set<String> unique = new HashSet<>(list);
  49.         for (String key : unique) {
  50.             curr = Collections.frequency(list, key);
  51.             if (max < curr) {
  52.                 max = curr;
  53.                 currKey = key;
  54.             }
  55.         }
  56.         return currKey;
  57.     }
  58. }
Success #stdin #stdout 0.08s 2184192KB
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stdin
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Standard input is empty
stdout
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6666
https://ideone.com/FH4nI2
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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