Number of 1 Bits

Problem Statement:

Given a positive integer n. Your task is to return the count of set bits.

• Example:

  Examples:

  Input:n = 6
  Output:2
  Explanation:Binary representation is '110', so the count of the set bit is 2.

  Input: n =8
  Output:1
  Explanation:Binary representation is '1000', so the count of the set bit is 1.
  

  Input: n =3
  Output:2

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