Counting an Occurrence in an Array (Java)

Question

I am completely stumped. I took a break for a few hours and I can\'t seem to figure this one out. It\'s upsetting!

I know that I need to check the current element in

Answer 1

You can find the answer of your question here

I used Arrays.sort() method in my example:

public class MyTest {

    /**
     * @param args
     */
    public static void main(String[] args) {

        int[] a = {1, 9, 8, 8, 7, 6, 5, 4, 3, 3, 2, 1};

        Arrays.sort(a);
        int nbOccurences = 0;

        for (int i = 0, length = a.length - 1; i < length; i++) {
            if (a[i] == a[i + 1]) {
                nbOccurences++;
            }
        }

        System.out.println("Number same occurences : " + nbOccurences);
    }
}