Given an integer, write a function to determine if it is a power of two.
1 bool isPowerOfTwo(int n) 2 { 3 if(n<=0) 4 return false; 5 6 if(n==1) 7 return true; 8 bool judge=false; 9 while(n>1) 10 { 11 if(n%2==0) 12 { 13 n=n/2; 14 } 15 else 16 { 17 return false; 18 } 19 } 20 21 if(n==0) 22 return true; 23 }