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assertions

Language/Type: Java assertions
Author: Marty Stepp (on 2010/12/28)

For each of the five points labeled by comments, identify each of the assertions in the table below as either being always true, never true, or sometimes true / sometimes false. 

public static int randomWalk(int steps) {
    Random rand = new Random();
    int x = 0;
    int r = rand.nextInt(2);

    // Point A
    while (steps > 0 || x == 0) {
        // Point B
        if (r == 0) {
            x++;
            // Point C
        } else {
            x = 0;
            // Point D
        }

        steps--;
        r = rand.nextInt(2);
    }

    // Point E
    return x;
}

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

steps > 0 x > 0 r > 0
Point A
Point B
Point C
Point D
Point E

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