How to check whether the given number is a power of 2 in O(1)
#include <iostream>
using namespace std;
int main()
{
int n;
cout<<"Enter the number :";
cin>>n;
if(n != 0 && (n & (n-1)) == 0)
{
cout<<"Number is power of 2"<<endl;
}
else
{
cout<<"Number is not power of 2"<<endl;
}
}Copyright © 2021 Codeinu
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