APROG - 08/02/2013 - Exame Época Recurso - Grupo II

import java.util.Scanner;

public class II08022013 {
    private static Scanner in = new Scanner(System.in);

    public static int[][] lerMatriz(int n){
        int[][] m = new int[n][n];
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                System.out.print("MAT["+i+"]["+j+"]=");
                m[i][j]=in.nextInt();
            }
        }
        return m;
    }
    public static void mostrarMatriz(int[][] m){
        for(int i=0;i<m.length;i++){
            for(int j=0;j<m[0].length;j++){
                System.out.print(m[i][j]+" ");
            }
            System.out.println();
        }
    }
    public static void listarVetor(int[] v, int n){
        for(int i=0;i<n;i++){
            System.out.println(v[i]);
        }
    }
    public static int imparesDePares(int[][] m, int[] v){
        int nv=0;
        for(int i=0;i<m.length;i+=2){
            for(int j=0;j<m[0].length;j++){
                if(m[i][j]%2!=0){
                    v[nv]=m[i][j];
                    nv++;
                }
            }
        }
        return nv;
    }
    public static void trocarElementos(int[][] m){
        for(int i=0;i<m.length-1;i++){
            for(int j=0;j<m[0].length-1-i;j++){
                int temp=m[i][j];
                m[i][j]=m[m[0].length-j-1][m.length-i-1];
                m[m[0].length-j-1][m.length-i-1]=temp;
            }
        }
    }

    public static void main(String[] args) {
        System.out.print("Matiz Quadrada de Ordem N?");
        int nm = in.nextInt();
        while(nm<2){
            System.out.println("ERRO: Ordem Invalida");
            System.out.print("Matiz Quadrada de Ordem N?");
            nm = in.nextInt();
        }

        int[][] mat=lerMatriz(nm);

        System.out.println();
        System.out.println("Impares de Pares");
        int[] vec = new int[(nm)*1000];
        int nv=imparesDePares(mat,vec);
        listarVetor(vec,nv);

        System.out.println();
        mostrarMatriz(mat);
        trocarElementos(mat);
        System.out.println("Troca de Elementos");
        mostrarMatriz(mat);
    }

}