In order to do a binary search on an array,
A) the values of the array must be numeric
B) the array must first be sorted in ascending order
C) you must first do a sequential search of the array to assure the element you are looking for is there
D) There are no requirements

Question

Quizplus · Accepted Answer

Binary search requires that the array be sorted in ascending order in order to work properly. This is because the algorithm works by repeatedly dividing the search interval in half, which only makes sense if the array is already ordered.

In Order to Do a Binary Search on an Array