import java.util.Random;

import java.util.ArrayList;

import java.util.Scanner;

//@author tomvargas

public class matrices {

public static void main(String[] args) {

Scanner get = new Scanner(System.in);

int n=0, sum=0;

ArrayList<Integer> list = new ArrayList<Integer>();

boolean val=true;

while(val){

System.out.print(">> Ingresar la dimension de la matriz a generar: ");

n = get.nextInt();

if (n>1 && n%2!=0){val=false;}

else{System.out.println("La dimension de la matriz debe ser impar y mayor a uno.");}

}

int[][] matriz = new int[n][n];

for (int i=0; i < matriz.length; i++) {

for (int j=0; j < matriz[i].length; j++) {

matriz[i][j] = (int)(Math.random()*100+1);

}

}

System.out.println(">> MATRIZ GENERADA: ");

System.out.println("==================================");

for (int i=0; i < matriz.length; i++) {

for (int j=0; j < matriz[i].length; j++) {

System.out.print(matriz[i][j]+" ");

}

System.out.println("");

}

System.out.println(">> BORDES: ");

System.out.println("==================================");

for (int i=0; i < matriz.length; i++) {

for (int j=0; j < matriz[i].length; j++) {

if(i==0 || i==n-1){

System.out.print(matriz[i][j]+" ");

list.add(matriz[i][j]);

}

else{

if(j==0 || j==n-1){

System.out.print(matriz[i][j]+" ");

list.add(matriz[i][j]);

for(int c=0;c<n-1;c++){

System.out.print(" ");

}

}

}

}

System.out.println("");

}

System.out.println("==================================");

System.out.println(">> Numeros impares de la lista: ");

for(int i:list){

sum+=i;

if(i%2!=0){System.out.print(i+" ");}

}

System.out.println("");

System.out.println("==================================");

System.out.println(">> Promedio total de los bordes generados: "+(sum/list.size()));

System.out.println("");

System.out.println("==================================");

System.out.println("@Author tomas_vargas");

System.out.println("==================================");

}

}