Integer Equal to It's Index
You are given an array of non-negative integers as an argument. Return the first element found in the array whose index is equal to its value.
- Must return a single integer
- If there are multiple integers found must return only the first occurrence.
solve([10, 20, 11, 12, 4]) > 4
We return 4 since it is also at index 4 of the array
solve([2, 1, 11, 12, 4]) > 1
Both 1 and 4's values match their indexes in the array. We return 1 since it is the first occurrence.