Two students typed the same answer key. Write mismatch_positions(a, b) that returns a list of every index i where a[i] != b[i], in increasing order. Both lists have the same length. Return an empty list if they are identical.
Examples
Input: a = [1, 2, 3, 4], b = [1, 0, 3, 9]
Output: [1, 3]
Input: a = ["a", "b"], b = ["a", "b"]
Output: []
Constraints
len(a) == len(b)0 <= len(a) <= 5000
Goals
- Compare two lists position by position
- Collect the indexes where they disagree