19.)UniquePattern.java

import java.util.*;
import java.lang.*;
import java.io.*;


 class Codechef {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

       int sp =n/2;
       int st = 1;
       int val = 1;
       for(int i =1;i<=n;i++){
           for(int j =1;j<=sp;j++){
               System.out.print("\t");
           }
           int cval = val;
           for(int j=1;j<=st;j++){
               System.out.print(cval +"\t");
               if(j<=st/2){
                   cval++;
               }else{
                   cval--;
               }
            
           }
           if(i<=n/2){
               sp--;
               st+=2; 
               val++;
           }else{
               sp++;
               st-=2; 
               val--;
           }
           System.out.println();
       }
    }
}