如何获取列表中的第一个名字，或者只是拉出唯一的名字？

name_list = ["Alice", "Bob", "Charlie"]
first_name = name_list[0]

List<String> nameList = new ArrayList<>();
nameList.add("Alice");
nameList.add("Bob");
nameList.add("Charlie");
String firstName = nameList.get(0);

let nameList = ["Alice", "Bob", "Charlie"];
let firstName = nameList[0];

List<string> nameList = new List<string>();
nameList.Add("Alice");
nameList.Add("Bob");
nameList.Add("Charlie");
string firstName = nameList[0];

name_list = ["Alice", "Alice", "Bob", "Charlie"]
unique_names = list(set(name_list))

List<String> nameList = new ArrayList<>();
nameList.add("Alice");
nameList.add("Alice");
nameList.add("Bob");
nameList.add("Charlie");
Set<String> uniqueNames = new HashSet<>(nameList);

let nameList = ["Alice", "Alice", "Bob", "Charlie"];
let uniqueNames = [...new Set(nameList)];

List<string> nameList = new List<string>();
nameList.Add("Alice");
nameList.Add("Alice");
nameList.Add("Bob");
nameList.Add("Charlie");
HashSet<string> uniqueNames = new HashSet<string>(nameList);