import java.util.ArrayList;
import java.util.Collections;

public class Amazon {
  public static void main(String[] args) {
    int[] arr = { 4, 4, 4, 4, 1, 1, 1, 1, 1, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 };
    ArrayList<Integer> al = new ArrayList<>();
    ArrayList<Integer> all = new ArrayList<>();
    for (int d = 0; d < arr.length; d++) {
      Collections.sort(all);
      all.add(arr[d]);
    }
    // for (int i = 0; i < arr.length; i++) {
    // System.out.print(arr[i]);
    // System.out.print("\t");
    // al.add(arr[i]);
    // }
    // System.out.println("");
    // System.out.println(al);
    for (int i = 0; i < arr.length; i++) {
      int p = 0;
      if (!al.contains(arr[i])) {
        al.add(arr[i]);
        p++;
        for (int j = 1 + i; j < arr.length; j++) {
          if (arr[i] == arr[j]) {
            p++;
          }
        }
        System.out.println(arr[i] + " ==>" + p);
      }
    }
    System.out.println(all);
  }

}