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Count Set Bits
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Count Set Bits

EasyPython

Problem

Count the number of set bits (1s) in an unsigned long long integer.

Asked in the Technical Phone Screens (3 rounds) stage. This is a bit manipulation task in C++.

Specification

Implement count_set_bits(n), where n is an integer representing an unsigned 64-bit value. Return the number of bits equal to 1.

Constraints

  • 0 <= n <= 2^64 - 1
  • The input represents an unsigned 64-bit integer
  • Return an integer between 0 and 64 inclusive

Function Signature

def count_set_bits(n):
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CodePython 3
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