Given a sorted array of distinct integers, nums, and an integer, target, return the index of target if it exists in the array.
If the target is not present, return the index where it should be inserted to maintain the sorted order.

Your algorithm must run in the $O(\log n)$ time.

Constraints:

• $1 \leq$ nums.length $\leq 10^3$

• $-10^4 \leq$ nums[i] $\leq 10^4$

• nums contains distinct values sorted in ascending order.

• $-10^4 \leq$ target $\leq 10^4$

Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Implement your solution in the following coding playground.