Given a sorted integer array
arr[]
of
n
elements and a target value
k
, write a program to search
k
in
arr[]
.
Problem Note
-
If
kexists, then return its index, otherwise, return -1. -
You may assume that all elements in
arr[]
Example 1
Input: arr[] = [1, 5, 6, 7, 9, 10, 50], k= 9
Output: 4
Explanation: 9 exists in arr[] and its index is 4.Example 2
Input: arr[] = [1, 5, 6, 7, 9, 10, 50], target = 20
Output: -1
Explanation: 20 does not exist in arr[] so return -1.
