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Language/Type: Java assertions
Author: Eric Spishak (on 2010/12/28)

You will identify various assertions as being either always true, never true or sometimes true/sometimes false at various points in program execution. The comments in the method below indicate the points of interest.

public static void mystery(int x, int y) {
    int z = 0;

    // Point A
    while (x != y) {
        // Point B

        if (x > y) {
            // Point C
            x = x / 10;
        } else {
            // Point D
            y = y / 10;

    // Point E
    System.out.println(x + " " + y + " " + z);

Fill in each box of the the table below with ALWAYS, NEVER or SOMETIMES.

x > y z == 0 x == y
Point A
Point B
Point C
Point D
Point E

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