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public class a
{
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public static void main(String[] args)
{
int i,j,k,x;
// TODO, add your application code
System.out.println("ÇëÊäÈëÒª´òÓ¡³öͼÐεÄÅÅÊý£º");
Scanner sc = new Scanner(System.in);
x = sc.nextInt();
for(i=1;i <=(x-1)/2;i++)
{
for(j=1;j <=21-i;j++)
System.out.print(" ");
for(k=1;k <=(2*i)-2;k++)
System.out.print("*");
System.out.println("*");
}
}
}
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Scanner sc = new Scanner(System.in);
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