Question

I need to print the pattern with numbers from 1 to n.

The constraints are between 1 and 500.

User has to input an integer n.

Example:

input:3

output:

33333

32223

32123

32223

33333

I have not learned functions or arrays at this point in class but if you can help explain how to go about doing this, that would be very helpful.

Answer 1

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;

import java.util.Scanner;

class Main{
    public static void main(String[] args) {
        Scanner obj = new Scanner(System.in);
        int n = obj.nextInt();
        //Size of array is 2n-1
        int s = 2*n-1;
        //Find mid index
        int mid = s/2;
        //Array to store ans
        int ans[][] = new int[s][s];
        for(int i=0;i<s;i++){
            for(int j=0;j<s;j++){
                //Fill the array, minimum distance from center
                ans[i][j] = 1+Math.max(Math.abs(i-mid),Math.abs(j-mid));
            }
        }
        //Print the ans
        for(int i=0;i<s;i++){
            for(int j=0;j<s;j++){
                System.out.print(ans[i][j]+" ");
            }
            System.out.println();
        }
    }
}

OUTPUT :

Run Main C:\Program Files \Java\jdk1.8.0_1311binljava" .. 54 4 4 4 4 4 4 5 回| | ODI 5 4 3 3 3334 5 543222345 543212345 5 4 3 2 2 2 34 5 543333345 5 4 4 4 4 444 5 Process finished with exit code 0