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# ===============================================================================
# DESCRIPTION: Perl Weekly Challenge #121
# Task 1 - Invert bit
#
# AUTHOR: Lubos Kolouch
# CREATED: 20210710 04:44:33 PM
# ===============================================================================
def invert_bit(what: int, n: int):
binary_what = str(bin(what)[2:])
binary_arr = list(binary_what)
binary_arr[-n] = '0' if binary_arr[-n] == '1' else '1'
return int("".join(binary_arr), 2)
assert invert_bit(12, 3) == 8
assert invert_bit(18, 4) == 26
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