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BigIntegerMath isPowerOfTwo() function | Guava | Java
  • Last Updated : 15 Nov, 2018

The method isPowerOfTwo(BigInteger x) of Guava’s BigIntegerMath class returns true if x represents a power of two.

Syntax:

public static boolean isPowerOfTwo(BigInteger x)

Parameters: This method takes the BigInteger number x as parameter which is to be checked.

Return Value: This method returns true if x is a power of two.

Below examples illustrates the BifIntegerMath.isPowerOfTwo() method:



Example 1:




// Java code to show implementation of
// isPowerOfTwo(BigInteger x) method of
// Guava's BigIntegerMath class
  
import java.math.*;
import com.google.common.math.BigIntegerMath;
  
class GFG {
  
    // Driver code
    public static void main(String args[])
    {
        BigInteger a1 = BigInteger.valueOf(63);
  
        // Using isPowerOfTwo(BigInteger x) method
        // of Guava's BigIntegerMath class
        if (BigIntegerMath.isPowerOfTwo(a1))
            System.out.println(a1 + " is power of 2");
        else
            System.out.println(a1 + " is not power of 2");
  
        BigInteger a2 = BigInteger.valueOf(1024);
  
        // Using isPowerOfTwo(BigInteger x) method
        // of Guava's BigIntegerMath class
        if (BigIntegerMath.isPowerOfTwo(a2))
            System.out.println(a2 + " is power of 2");
        else
            System.out.println(a2 + " is not power of 2");
    }
}
Output:
63 is not power of 2
1024 is power of 2

Example 2:




// Java code to show implementation of
// isPowerOfTwo(BigInteger x) method of
// Guava's BigIntegerMath class
  
import java.math.*;
import com.google.common.math.BigIntegerMath;
  
class GFG {
  
    // Driver code
    public static void main(String args[])
    {
        BigInteger a1 = BigInteger.valueOf(1);
  
        // Using isPowerOfTwo(BigInteger x) method
        // of Guava's BigIntegerMath class
        if (BigIntegerMath.isPowerOfTwo(a1))
            System.out.println(a1 + " is power of 2");
        else
            System.out.println(a1 + " is not power of 2");
  
        BigInteger a2 = BigInteger.valueOf(567);
  
        // Using isPowerOfTwo(BigInteger x) method
        // of Guava's BigIntegerMath class
        if (BigIntegerMath.isPowerOfTwo(a2))
            System.out.println(a2 + " is power of 2");
        else
            System.out.println(a2 + " is not power of 2");
    }
}
Output:
1 is power of 2
567 is not power of 2

Reference: https://google.github.io/guava/releases/21.0/api/docs/com/google/common/math/BigIntegerMath.html#isPowerOfTwo-java.math.BigInteger-

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