Assume int[] scores = {1, 20, 30, 40, 50}, what value does java.util.Arrays.binarySearch(scores, 3) return?
a. 0
b. -1
c. 1
d. 2
e. -2
e The binarySearch method returns the index of the search key if it is contained in the list. Otherwise, it returns –insertion point - 1 . The insertion point is the point at which the key would be inserted into the list. In this case the insertion point is 1 . Note that the array index starts from 0.
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