24 lines
566 B
Markdown
24 lines
566 B
Markdown
---
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title: Hamming distance
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tags: math
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expertise: intermediate
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author: maciv
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firstSeen: 2021-01-17T13:04:06+02:00
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lastUpdated: 2021-02-18T14:22:25+02:00
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---
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Calculates the Hamming distance between two values.
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- Use the XOR operator (`^`) to find the bit difference between the two numbers.
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- Use `bin()` to convert the result to a binary string.
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- Convert the string to a list and use `count()` of `str` class to count and return the number of `1`s in it.
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```py
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def hamming_distance(a, b):
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return bin(a ^ b).count('1')
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```
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```py
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hamming_distance(2, 3) # 1
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```
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