Pattern

Pattern for N=5
1 2 3 4 5
11 12 13 14 15
21 22 23 24 25
16 17 18 19 20
6 7 8 9 10


code in java **************************************

public class Solution {

	public static void printPattern(int n){

		int p = n;
        
        if(n >= 1 && n <= 100){
            for(int i = 1; i <=n; i+=2){
                int k = (i - 1) * n + 1;
                for(int j = 0; j < n-1; j++){
                    System.out.print(k + " ");
                    k++;
                }
                System.out.println(k + " ");
            }
        }
        
        if(n % 2 != 0){
            p = n - 1;
        }
        for(int i=p;i>0;i-=2) 
        { 
            int k=(i-1)*n+1; 
            for(int j=0;j<n-1;j++) 
            { 
                System.out.print(k + " "); 
                k++; 
            } 
            System.out.println(k + " ");
        }               
	}
	
}