Created
April 27, 2012 02:39
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Un pequeño ejemplo sobre cómo trabajar una matriz en Java (y su prueba correspondiente). En este caso, rotándola.
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package ar.edu.untref.lp1.terreno; | |
public class Casa { | |
private boolean[][] plano; | |
private int orientacion; | |
public Casa(boolean[][] plano, int orientacion) { | |
this.plano = plano; | |
this.orientacion = orientacion; | |
} | |
public Casa girar(){ | |
boolean[][] otroPlano = new boolean[this.plano[0].length][this.plano.length]; | |
for (int i = 0; i < plano.length; i++){ | |
for(int j = 0; j < plano[i].length; j++){ | |
otroPlano[j][plano.length - 1 - i] = plano[i][j]; | |
} | |
} | |
int nuevaOrientacion = (orientacion + 1) % 4; | |
return new Casa(otroPlano, nuevaOrientacion ); | |
} | |
public boolean[][] getPlano() { | |
return plano; | |
} | |
public int getOrientacion() { | |
return orientacion; | |
} | |
} |
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package ar.edu.untref.lp1.terreno; | |
import org.junit.Assert; | |
import org.junit.Test; | |
public class CasaTests { | |
@Test | |
public void queLaCasaGireBien(){ | |
boolean[][] plano = {{true, true, false}, | |
{true, false, false}, | |
{true, false, false}}; | |
Casa casa = new Casa(plano, 0); | |
boolean[][] planoGirado = {{true, true, true}, | |
{false, false, true}, | |
{false, false, false}}; | |
Casa casaGirada = casa.girar(); | |
Assert.assertArrayEquals(planoGirado, casaGirada.getPlano()); | |
Assert.assertEquals(1, casaGirada.getOrientacion()); | |
} | |
} |
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