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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.         HashMap<Integer, Integer> map = new HashMap<>();
  15.  
  16.         int n = sc.nextInt();
  17.         int[] arr = new int[n];
  18.  
  19.         for (int i = 0; i < n; i++) {
  20.             arr[i] = sc.nextInt();
  21.             map.put(arr[i], map.getOrDefault(arr[i], 0) + 1);
  22.         }
  23.  
  24.         int max_freq = Integer.MIN_VALUE;
  25.         int min_freq = Integer.MAX_VALUE;
  26.         int max_num = -1;
  27.         int min_num = -1;
  28.  
  29.         for(HashMap.Entry<Integer,Integer> idx : map.entrySet()){
  30.         	int num = idx.getKey();
  31.         	int count = idx.getValue();
  32.  
  33.         	if(count>max_freq){
  34.         		max_freq = count;
  35.         		max_num = num;
  36.         	}
  37.  
  38.         	if(count<min_freq){
  39.         		min_freq =count;
  40.         		min_num = num;
  41.         	}
  42.         }
  43.         System.out.println("max number is " + max_num + " => " + max_freq);
  44.         System.out.println("min number is " + min_num + " => " + min_freq);
  45.  
  46.  
  47.  
  48.  
  49. 	}
  50. }
Success #stdin #stdout 0.16s 60952KB
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max number is 1 => 4
min number is 4 => 1
https://ideone.com/K7JpHw
language:
Java (12.0.1)
created:
7 hours ago
visibility:
public

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