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package exercises.myContainers;

import java.util.Arrays;

/**
 *
 * @author Lefteris Moussiades
 */

public class StackOfStrings {

    private String[] store;
    private int top;
    public static int incStep=10;

    public StackOfStrings() {
        store = new String[10];
        top = -1;
    }

    public boolean isEmpty() {
        return top == -1;
    }

    private void increase() {
        String[] lStore = Arrays.copyOfRange
        (store, 0, store.length + incStep);
        store = lStore;
    }

    public void push(String data) {
        if (top >= store.length - 1) {
            increase();
        }
        store[++top] = data;
    }
    
    public String pop() {
        return store[top--];
    }

    public static void main(String[] args) {
        StackOfStrings.incStep=100;
        StackOfStrings sS=new StackOfStrings();
        for (int i=1; i<32; i++) 
            sS.push(Integer.toString(i));
        while (!sS.isEmpty())
            System.out.print(sS.pop()+" ");
    }
}