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class yiwei
{
public static void main(String [] args)
{
int i = -4;
int c = i>>>1;
System.out.println(c);
System.out.println(Integer.toBinaryString(c));
}
}
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double a = Math.random();
System.out.println("0.0-1.0µÄËæ»úÊý£º" + a);
double b = Math.random()*100;
System.out.println("0.0-100.0µÄËæ»úÊý£º" + b);
int c = (int)(Math.random()*100);
System.out.println("0-100µÄËæ»úÕûÊý£º" + c);  ......