import java.util.*;
public class Main {
public static void main(String args[]) {
public static void main(String[] args) {
System.out.println("enter");
Scanner scn= new Scanner(System.in);
int n =scn.nextInt();
int row=1,nst=1,nsp=0;
System.out.println("1");
while(row<=n-1){
for(int cst=1;cst<=nst;cst++){
System.out.print(row);
}
for(int csp=1;csp<=nsp;csp++){
System.out.print("0");
}for(int cst=1;cst<=nst;cst++){
System.out.print(row);
}
System.out.println();
nsp=nsp+1;
row=row+1;
}
}
}
}
}
this code is working fine in java on pc but showing error on site