title: Next Power Of 2 1
signature: function nextPowerOf21($n) {
source_py: def next_power_of_2_1(n):
      p = 1
      if (n and (not (n & (n - 1)))):
          return n
      while (p < n):
          p <<= 1
      return p
source_cpp: unsigned int next_power_of_2_1(unsigned int n) {
    unsigned int p = 1;
    if ( n && ! ( n & ( n - 1 ) ) ) return n;
    while ( p < n ) p <<= 1;
    return p;
  }