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while loop mystery

Language/Type: Java method basics mod mystery while loops
Author: Marty Stepp (on 2020/04/15)

For each call below to the following method, write the value that is returned: 

        public static void mystery(int x) {
            int y = 1;
            int z = 2;
            while (x > z) {
                if (x % z == 0) {
                    x = x / z;
                    y++;
                } else {
                    z++;
                }
            }
            System.out.println(y + " " + z);
        }
mystery(2);
mystery(5);
mystery(9);
mystery(12);

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