list_1_common_end.py

# Given 2 arrays of ints, a and b, return True if they have the same first element
# or they have the same last element. Both arrays will be length 1 or more.

# common_end([1, 2, 3], [7, 3]) → True
# common_end([1, 2, 3], [7, 3, 2]) → False
# common_end([1, 2, 3], [1, 3]) → True

def common_end(a, b):
    return (a[0] == b[0] or a[-1] == b[-1])