Identify a compare function that sorts numeric values in descending order.
A) function descending(a, b) { return a - b; }
B) function descending(b, a) { return b; }
C) function descending(a, b) { return b - a; }
D) function descending(b, a) { return a; }

Question

Quizplus · Accepted Answer

The compare function should subtract the second value from the first value to determine their relative order. If the result is negative, the first value is smaller and should come before the second value in the sorted array. If the result is positive, the first value is larger and should come after the second value in the sorted array. Therefore, to sort numeric values in descending order, we need to subtract the second value from the first value and return the result in reverse order (i.e., b - a). Choice C correctly implements this logic.

Identify a Compare Function That Sorts Numeric Values in Descending