/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static boolean isPowerOfFour(int num) {
if ((num & (num-1)) != 0) {
return false;
}
int count = 0;
while (num != 1) {
num >>= 1;
count++;
}
return count % 2 == 0;
}
{
for (int i = 0 ; i != 20 ; i++) {
System.
out.
println(i
+" "+(1<<i
)+ " " +isPowerOfFour
(1<<i
)); }
}
}
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