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int[] intarr=new int[100];
arraylist mylist=new arraylist();
random rnd=new random();
while(mylist.count<100)
{
int num=rnd.next(1,101);
if(!mylist.contains(num))
mylist.add(num);
}
for(int i=0;i<100;i++)
intarr[i]=(int)mylist[i];
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