Provide a flowchart and algorithm with regards to the code given below, and also please insert a comment line on the source code on how you come up with those code

Provide a flowchart and algorithm with regards to the code given below, and also please insert a comment line on the source code on how you come up with those code 


package arraystack;

import java.util.Scanner;

import java.util.Stack;

class ArrayStack {

public static void main(String[] args) {

int type_of_op;

Stack<String> str=new Stack<>();

Scanner s = new Scanner(System.in);

while(true) { System.out.println("*********Stack Menu*********\n"); System.out.println("Pick a number");

System.out.println("1. Push");

System.out.println("2. Pop");

System.out.println("3. Peek");

System.out.println("4. Exit");

System.out.println("\n Enter your choice \n");

type_of_op = s.nextInt();

switch (type_of_op) {

case 1: System.out.println("Enter your element which you want to push");

str.push(s.next()); System.out.println("The Stack is: " + str);

break;

case 2: str.pop(); System.out.println("The Stack is: " + str);

break;

case 3: System.out.println("Topmost element is: " + str.peek());

System.out.println("The Stack is: " + str);

break;

case 4: System.out.println("Program Exiting....");

return; default: System.out.println("You have entered a wrong choice!");

return;

}

}

}

}