检查两个字符串数组的等价性

def check_array_equivalence(arr1, arr2):
    if len(arr1) != len(arr2):
        return False

    count_map = {}
    for elem in arr1:
        if elem in count_map:
            count_map[elem] += 1
        else:
            count_map[elem] = 1

    for elem in arr2:
        if elem not in count_map or count_map[elem] == 0:
            return False
        count_map[elem] -= 1

    return True