title: Count Set Bits In An Integer 1
signature: countSetBitsInAnInteger1(n) {
source_py: def count_set_bits_in_an_integer_1(n):
      if (n == 0):
          return 0
      else:
          return ((n & 1) + count_set_bits_in_an_integer_1((n >> 1)))
source_cpp: int count_set_bits_in_an_integer_1(int n) {
    if ( n == 0 ) return 0;
    else return ( n & 1 ) + count_set_bits_in_an_integer_1 ( n >> 1 );
  }