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import java.util.*;
public class Test{
public static void main(String [] args){
Scanner ss = new Scanner(System.in);
System.out.println("请输入金字塔的层数:");
int cengshu = ss.nextInt();
for(int i=0;i<cengshu;i++){
for(int j=cengshu-1;j>i;j--){
System.out.print(" ");
}
int a = i;
for(int t=0;t<2*a+1;t++){
System.out.print("*");
}
System.out.println();
}
}
}