Power of Two

Decide whether n equals 2ᵏ for some whole number k ≥ 0 (1, 2, 4, 8, …).

Implement is_power_of_two(n).

Input

n: The number to check.

Output

Return true if n is a power of two.

Vincoli

-10¹⁸ ≤ n ≤ 10¹⁸

Esempi

Input:
n = 64

Output atteso:
expected = True

Input:
long long n = 64;

Output atteso:
bool expected = true;

Input:
long n = 64;

Output atteso:
bool expected = true;

Input:
n = 12

Output atteso:
expected = False

Input:
long long n = 12;

Output atteso:
bool expected = false;

Input:
long n = 12;

Output atteso:
bool expected = false;

Riferimenti

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• GWU CS1111 Introduction to Software Development - lab sequence