Practice Exercises Java - Learn to program performing exercises with Java

Practice Exercises Java

Learn to program performing exercises with Java

12 Lessons Java with the Solutions - 228 Exercises Java with the solutions
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Implementing a queue using array - Practice Exercises Java

Lesson 11:

Dynamic memory management

Exercise 11.1:

Implementing a queue using array


Implementing a queue

Source Code:

import java.util.*;

public class Cola
	private int[] pila;
	private int posicion;
	private int tamanyo;

	public Cola(int tamanyo)
		posicion = -1;
		this.tamanyo = tamanyo;

		// Iniciamos el array
		pila = new int[this.tamanyo];

	public final void Encolar(int valor)
		// Aumentamos posición

		// Guardamos el valor
		pila[posicion] = valor;

	public final int Desencolar()
		int aux = pila[0];

		for (int i = 0; i < posicion; i++)
			pila[i] = pila[i + 1];

		pila[posicion] = aux;


		// Retornamos el ultimo valor
		return pila[posicion + 1];

public class TestCola
	public static void main(String[] args)
		boolean depurando = false;

		Cola cola = new Cola(2);



		if (depurando)
			new Scanner(;
Exercisey 11.1

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