Developing Algorithms Using Arrays

AP Computer Science A· difficulty 3/5

public static String findOwner(String[] names, int[] ids, int target) {
    for (int i = 0; i < ids.length; i++) {
        if (ids[i] == target) {
            return names[target];
        }
    }
    return "";
}

What is the bug?

A
$names[target] should be names[i] to use the same index$
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B
$The loop should iterate names.length$
C
$target should be a String$
D
$Nothing is wrong$

Explanation

With parallel arrays, the same index i ties name to id. Using target as an index is unrelated to position and may even be out of bounds.

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