#includeint main(){int i,j,n,sum=0,x[1001]={0};scanf("%d",&n);for (i=1;i<=n;i++){scanf("%d",&j);if (x[j]==0) sum++;x[j]=1;}printf("%d\n",sum);for (i=1;i<=1000;i++)if (x[i]==1) printf("%d ",i);return 0;}
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#includeint main(){int i,j,n,sum=0,x[1001]={0};scanf("%d",&n);for (i=1;i<=n;i++){scanf("%d",&j);if (x[j]==0) sum++;x[j]=1;}printf("%d\n",sum);for (i=1;i<=1000;i++)if (x[i]==1) printf("%d ",i);return 0;}
转载于:https://www.cnblogs.com/hxsyl/archive/2012/05/09/2491568.html