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Java - Code Samples

 Sample 1. Write a Program to implement stack using an array

public class Stack{
   static int top = 0;
   static Element[] stack = new Element[10];
   
   static class Element {
      int body;
      
      Element(int value){
         body = value;
      }
   }
   
   public static void main(String[] args){
      push(5);
      System.out.println(top);
      push(7);
      System.out.println(top);
      poll();
      System.out.println(top);
      poll();
      System.out.println(top);   
   }
   
   private static void push(int value){
      Element newElement = new Element(value);
      top++;
   }
   
   private static Element poll(){
      Element topElement = stack[top];
      top--;
      return topElement;
   }
}

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