using System;
using System.Collections.Generic;
using System.Linq;

namespace MyCompiler {
    class Program {
        public static void Main(string[] args) {
            Console.WriteLine("Hello world!");
            int[] numbers = {1,3,6,7,3,5};
            //Creating list for storing the removed element
            List<int> indexList = new List<int>();

            //converting array to list using linq method as it is easier to perform operation on a list
            List<int> lst = numbers.OfType<int>().ToList();

            //check for the number to be removed.
            for(int i = 0 ; i < lst.Count(); i++){
                if(lst[i] == 3){
                    //adding it to seperate list 
                    indexList.Add(lst[i]);
                    //removing the element
                    lst.RemoveAt(i);
                }
            }
            Console.WriteLine(string.Join(",", lst));
            Console.WriteLine(string.Join(",", indexList));

            //converting it toarray 
            int[] indexlistarray = indexList.ToArray();
            Console.WriteLine(string.Join(",", indexlistarray));
            //Console.WriteLine("index of 7 is {0}",indexOfEle);
        }
    }
}