def contains_common_item(arr1, arr2):
    """
    Loop through the first array
    For each item in the first array loop through the second array
    If first array item == second array item return True
    else return False

    O(a*b) Time Complexity
    O(1) Space Complexity
    """
    for first_array_item in arr1:
        for second_array_item in arr2:
            if first_array_item == second_array_item:
                return True
    return False