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Excess 3 code (#11001)

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* added excess-3 code

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* updated with fixes

* updated with fixes

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Update excess_3_code.py

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Manmita Das 2023-10-28 03:18:15 +05:30 committed by GitHub
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commit 1e1ee00782
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bit_manipulation/excess_3_code.py Normal file
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def excess_3_code(number: int) -> str:
"""
Find excess-3 code of integer base 10.
Add 3 to all digits in a decimal number then convert to a binary-coded decimal.
https://en.wikipedia.org/wiki/Excess-3
>>> excess_3_code(0)
'0b0011'
>>> excess_3_code(3)
'0b0110'
>>> excess_3_code(2)
'0b0101'
>>> excess_3_code(20)
'0b01010011'
>>> excess_3_code(120)
'0b010001010011'
"""
num = ""
for digit in str(max(0, number)):
num += str(bin(int(digit) + 3))[2:].zfill(4)
return "0b" + num
if __name__ == "__main__":
import doctest
doctest.testmod()