Given a sorted array of distinct integers and a target value, return the index if the target is found. If not, return the index where it would be inserted in order.
You must write an algorithm with O(log n) runtime complexity.
Example 1:
Input: nums = [1, 3, 5, 6], target = 5
Output: 2
Explanation: 5 is found at index 2.
Example 2:
Input: nums = [1, 3, 5, 6], target = 2
Output: 1
Explanation: 2 would be inserted at index 1.
Example 3:
Input: nums = [1, 3, 5, 6], target = 7
Output: 4
Explanation: 7 would be inserted at index 4 (the end).
1 <= nums.length <= 10^4-10^4 <= nums[i] <= 10^4nums contains distinct values sorted in ascending order-10^4 <= target <= 10^4