Integer rotateRight() Method in Java (original) (raw)

Last Updated : 18 Oct, 2019

Bit shifting is used in programming and has at least one variation in each programming language. Java has a single Logical right shift operator (>>). Bit shifting is a type of bitwise operation. Bit shifting is done on all the bits of a binary value which moves the bits by a definite number of places to the right. If the value 0100; (ie. 4) is shifted right, it becomes 0010; (ie. 2)which is again shifted to the right again it becomes 0001; or 1. The java.lang.Integer.rotateRight() is the method which returns the value we get by rotating the two's complement binary representation of the specified int value a towards the right by a specified number of bits. Bits are shifted towards the right hand i.e., the lower-order.Syntax :

public static int rotateRight(int a, int shifts)

Parameters: The method takes two parameters:

• a : This is of integer type and refers to the value on which operation is to be performed.
• shifts : This is also of integer type and refers to the distance of rotation.

Returns: rotateRight() method returns the value obtained by rotating the two's complement binary representation of the specified int value right by the specified number of bits. Below programs illustrate the Java.lang.Integer.rotateRight() method:Program 1: For a positive number.

java `

// Java program to illustrate the // Java.lang.Integer.rotateRight() method import java.lang.*;

public class Geeks {

public static void main(String[] args)
{
    int a = 64;
    int shifts = 0;
    while (shifts < 3)
    // It will return the value obtained by rotating left
    {
        a = Integer.rotateRight(a, 2);
        System.out.println(a);
        shifts++;
    }
}

}

`

Program 2: For a negative number.

java `

// Java program to illustrate the // Java.lang.Integer.rotateRight() method import java.lang.*;

public class Geeks {

public static void main(String[] args)
{

    int a = -165;
    int shifts = 0;
    while (shifts < 3)
    // It will return the value obtained by rotating left
    {
        a = Integer.rotateRight(a, 2);
        System.out.println(a);
        shifts++;
    }
}

}

`

Output:

-42 -1073741835 1879048189