Array Index Match

Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. There won't be duplicate values in the array.

0, 0
1, 1
2, 1
3, 2
4, 3
5, 3
6, 4
7, 5
8, 5
9, 6
10, 7
11, 8
12, 9
13, 9
14, 10
29, 10
31, 11