# Check if two iterables are permutations of each other

Check if two iterables are permutations of each other.

- Use
`len`

to check if both iterables have the same length. - Use
`Counter`

to verify that each element appears an equal number of times in both iterables.

from collections import Counter def is_perm(items0, items1): return len(items0) == len(items1) and Counter(items0) == Counter(items1) is_perm([1, 2, 3], [4, 1, 6]) # False is_perm([1, 2], [2, 1]) # True is_perm("dad", "add") # True is_perm("snack", "track") # False