[codility_] Distinct

app.codility.com/programmers/lessons/6-sorting/distinct/

Distinct coding task - Learn to Code - Codility

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

import java.util.*;

class Solution {
    public int solution(int[] A) {
        
        HashSet<Integer> hsSetIndex = new HashSet<Integer>();

        for(int i= 0 ; i < A.length ; i++)
        {
            hsSetIndex.add(A[i]);
        }

        return hsSetIndex.size();

    }
}