multbytwo.java

Java 程序设计源码 只提供了部分

//Left shifting is a quick way multiply by 2
class MultByTwo{
	public static void main(String[] args){
		int i;
		int num = 0xFFFFFFE;

		for(i = 0;i < 4;i++){
			num = num << 1;

			System.out.println(num);
		}
	}
}