using System;
using System.Linq;
using System.Collections.Generic;
class Program
{
static void Main() {
var list = new List<string> { "python", "c-sharp", "c", "c++", "java", "php", "go" };
Console.WriteLine(list.Contains("JAVA", StringComparer.InvariantCultureIgnoreCase));
}
}
/*
run:
True
*/