Without using method size(), write recursive method stackSize(Stack > s1 ) that receives a stack and...

Without using method size(), write recursive method stackSize(Stack > s1 ) that receives a stack and returns number of elements in the stack. The elements in the stack should not be changed after calling this method. please do it in java

Expert Solution

Java Program:

import java.util.*; 
  
public class Main { 
    static int stackSize(Stack stack)
    {
        if(stack.isEmpty())
        {
            return 0;
        }
        stack.pop();
        return 1+stackSize(stack);
    }
    public static void main(String args[]) 
    { 
        // Creating an empty Stack 
        Stack<Integer> stack = new Stack<Integer>(); 
  
        // Use add() method to add elements into the Stack 
        stack.add(10); 
        stack.add(15); 
        stack.add(30); 
        stack.add(20); 
        int range=stackSize(stack);
        System.out.println("Size of Stack is:" +range);
    } 
}

Output:

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venereology answered 10 months ago

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