using System;
using System.Collections;
class Program
{
public static void PrintArrayList(ArrayList list) {
foreach (var e in list) {
Console.WriteLine(e);
}
}
static void Main() {
ArrayList al = new ArrayList();
al.Add("java");
al.Add("c#");
al.Add("python");
al.Add("c");
al.Add("c#");
al.Add("php");
al.Add("c#");
PrintArrayList(al);
while (al.Contains("c#")) {
al.Remove("c#");
}
Console.WriteLine("\n\n");
PrintArrayList(al);
}
}
/*
run:
java
c#
python
c
c#
php
c#
java
python
c
php
*/