如何排序元组数组（String，String，int）

Question

我有一个元组数组。我想通过元组的第一个元素对列表进行排序。

实施例：

var names = [("C","MTS",4),("A","MTS",3),("M","SMTS",1),("N","LEAD",5)]; 

我想通过元组

[("A","MTS",3),("C","MTS",4),("M","SMTS",1),("N","LEAD",5)]; 

请推荐的第一元件到他们在排序下面顺序。

Answer 1

试试这个：

var names = [("C","MTS",4),("A","MTS",3),("M","SMTS",1),("N","LEAD",5)] 
names.sortInPlace{ $0.0 < $1.0 } 

// You can use this if it more clearly: 
// names.sortInPlace { (name1: (String, String, Int), name2: (String, String, Int)) -> Bool in 
     // return name1.0 < name2.0 
//} 

print(names) 
//[("A", "MTS", 3), ("C", "MTS", 4), ("M", "SMTS", 1), ("N", "LEAD", 5)]