Question: public class Main{ public static void main(String args[]) { int result = test (5); System.out.println(result); } public static int test(int k) { if (k >

public class Main{ public static void main(String args[]) { int result = test (5); System.out.println(result); } public static int test(int k) { if (k > 0) return k + test(k - 1); else return 0; }

}

the output is 15, but I need an easy explanation

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