Pattern - ZigZag Number Square

                 Pattern - ZigZag Number Square

Given an integer N as the input, print the pattern as given in the Example Input/Output section.

Input Format:
The first line contains N.

Output Format:
N lines containing the desired pattern.

Boundary Conditions:
2 <= N <= 50

Example Input/Output 1:
Input:
5

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

Example Input/Output 2:
Input:
8

Output:
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
17 18 19 20 21 22 23 24
32 31 30 29 28 27 26 25
33 34 35 36 37 38 39 40
48 47 46 45 44 43 42 41
49 50 51 52 53 54 55 56
64 63 62 61 60 59 58 57

Code:

Java:

import java.util.Scanner;

public class Hello {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        printPattern(N);

    }

static void printPattern(int N) {

int i,j,x=1,flag=0;

for(i=1;i<=N;i++)

{

    if(i!=1&&i%2==0)

           x+=N-1;

    else if(i%2==1&&i!=1)

        x+=N+1;

    for(j=1;j<=N;j++)

    {

        if(i%2==1)

           System.out.print(x++ +" ");

        else

            System.out.print(x--+" ");

    }

    System.out.println();

}
}

C language:

#include<stdio.h>

void printPattern(int N)

{

int i,j,x=1;

for(i=1;i<=N;i++)

{

    if(i!=1&&i%2==0)

        x+=N-1;

    else if(i!=1&&i%2==1)

        x+=N+1;

    for(j=1;j<=N;j++)

    {

        if(i%2==1)

            printf("%d ",x++);

        else

            printf("%d ",x--);

    }

    printf("\n");

}

}

int main()

{

    int N;

    scanf("%d",&N);

    printPattern(N);

    return 0;

}

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