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Java - Integer rotateLeft() method
Description
The Java Integer rotateLeft() method returns the value obtained by rotating the two's complement binary representation of the specified int value i left by the specified number of bits. (Bits shifted out of the left hand, or high-order, side reenter on the right, or low-order.).
Declaration
Following is the declaration for java.lang.Integer.rotateLeft() method
public static int rotateLeft(int i, int distance)
Parameters
i − This is the int value.
distance − This is the rotation distance.
Return Value
This method returns the value obtained by rotating the two's complement binary representation of the specified int value left by the specified number of bits.
Exception
NA
Example 1
The following example shows the usage of Integer rotateLeft() method to get an int by rotating the two's complement binary representation of the specified int value i left by the specified number of bits. We've created a int variable and assigned it a positive int value. Then using rotateLeft() method within a for loop, we're printing new integers generated.
package com.tutorialspoint; public class IntegerDemo { public static void main(String[] args) { int n = 2; // returns the value obtained by rotating left for(int i = 0; i < 4; i++) { n = Integer.rotateLeft(n, 4); System.out.println(n); } } }
Output
Let us compile and run the above program, this will produce the following result −
32 512 8192 131072
Example 2
The following example shows the usage of Integer rotateLeft() method to get an int by rotating the two's complement binary representation of the specified int value i left by the specified number of bits. We've created a int variable and assigned it a negative int value. Then using rotateLeft() method within a for loop, we're printing new integers generated.
package com.tutorialspoint; public class IntegerDemo { public static void main(String[] args) { int n = -2; // returns the value obtained by rotating left for(int i = 0; i < 4; i++) { n = Integer.rotateLeft(n, 4); System.out.println(n); } } }
Output
Let us compile and run the above program, this will produce the following result −
-17 -257 -4097 -65537
Example 3
The following example shows the usage of Integer rotateLeft() method to get an int by rotating the two's complement binary representation of the specified int value i left by the specified number of bits. We've created a int variable and assigned it a zero value. Then using rotateLeft() method within a for loop, we're printing new integers generated.
package com.tutorialspoint; public class IntegerDemo { public static void main(String[] args) { int n = 0; // returns the value obtained by rotating left for(int i = 0; i < 4; i++) { n = Integer.rotateLeft(n, 4); System.out.println(n); } } }
Output
Let us compile and run the above program, this will produce the following result −
0 0 0 0