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  int i=2,j=3;
  boolean b=i>j && i++>2;
  System.out.println(i);
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  int i;
  Random r=new Random();
  i=r.nextInt();
  //  i=Math.abs(i%10)+1;//»ñµÃ0µ½10µÄËæ»úÊý
  i=Math.abs(i%8)-5;//»ñµÃ-5µ½-2µÄËæ»úÊý
  System.out.println(i);  
10¡¢Êý×é´´½¨Ê±,´óС(ÄÚ´æ)¿ÉÒÔÊÇÇ°ÃæµÄ±äÁ¿.¿ÉÒÔ¶¯Ì¬´´½¨Êý×éµÄ´óС(ÄÚ´æ),´´½¨ºó¾Í²»ÄÜÔٸĴóС.
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  int t=9;
  int[][] jiu;
  jiu=new int[t][];
11¡¢±äÁ¿µÄ×÷ÓÃÓò¡£
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class Length{
 int length;
}
class People{
 void walk(Length length){
  length.length=+=2;
 }
 public satic void main(String[] args){
  Length l=new Length();
  l.length=20;
  new People().walk(l);
  System.out.println(l.length);
 }
}
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