Escriba un programa Java para imprimir el patrón cuadrado dado al tomar un número entero como entrada desde la línea de comandos.
Ejemplos:
Input : 3
Output :1 2 3.
7 8 9
4 5 6
Input :4
Output :1 2 3 4
9 10 11 12
13 14 15 16
5 6 7 8
// Java program to print a square pattern with command
// line one argument
import java.util.*;
import java.lang.*;
public class SquarePattern {
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number");
int number = sc.nextInt();
int arr[][] = PrintSquarePattern(number);
// int num = 3;
int k = 0, m = number - 1, n = number;
int l = 0;
if (number % 2 == 0)
m = number - 1;
else
m = number;
for (int i = 0; i < n / 2; i++) {
for (int j = 0; j < n; j++) {
System.out.format("%3d", arr[k][j]);
}
System.out.println("");
l = l + 2;
k = l;
// System.out.println("");
}
k = number - 1;
for (int i = n / 2; i < n; i++) {
for (int j = 0; j < n; j++) {
System.out.format("%3d", arr[k][j]);
}
m = m - 2;
k = m;
System.out.println("");
}
}
public static int[][] PrintSquarePattern(int n)
{
int arr[][] = new int[n][n];
int k = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
arr[i][j] = k;
k++;
}
}
return arr;
}
}
Aporte :
5
Producción :
Enter a number 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