rotateleft

整数类rotateLeft()方法 (Integer class rotateLeft() method)

• rotateLeft() method is available in java.lang package.

  rotationLeft()方法在java.lang包中可用。

• rotateLeft() method is used to returns the value generated by rotating the binary 2's complement denotation of the given argument (value) left by the given number of bits.

  rotationLeft()方法用于返回通过旋转给定位数剩下的给定参数(值)的二进制2的补码表示而生成的值。

• rotateLeft() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also we will not get an error.

  rotationLeft()方法是一个静态方法，也可以使用类名进行访问，如果我们尝试使用类对象访问该方法，那么也不会收到错误。

• rotateLeft() method does not throw an exception at the time of rotating or shifting of bits.

  旋转或移位位时， rotateLeft()方法不会引发异常。

Syntax:

句法：

    public static int rotateLeft(int value, int rotation);

Parameter(s):

参数：

• int value – represents the integer value to be parsed.

  int value –表示要解析的整数值。

• int rotation – represents the distance of rotation.

  int rotation –表示旋转距离。

Return value:

返回值：

The return type of this method is int, it returns an integer value generated by rotating the 2's complement binary of the given integer value left by the given number of bits.

此方法的返回类型为int ，它返回一个整数值，该整数值是通过将给定整数值的2的补码二进制数旋转给定位数而生成的。

Example:

例：

// Java program to demonstrate the example
// of rotateLeft(int value, int rotation) method of Integer class
public class RotateLeftOfIntegerClass {public static void main(String[] args) {int value = 3;
int rotation = 1;
// Iterates till the value of rotation reaches
while (rotation < 4) {// It return the value generated by rotating the
// 2's //complement of the given argument (value) left
// by given number of bits
value = Integer.rotateLeft(value, 3);
System.out.println("value: " + value);
++rotation;
}
}
}

Output

输出量

value: 24
value: 192
value: 1536

翻译自: https://www.includehelp.com/java/integer-class-rotateleft-method-with-example.aspx

rotateleft