12/17面试题详解编程语言

1 """ 
 2 有一个列表[11, 2, 3, 3, 7, 9, 11, 2, 3],去重并且保持原来的顺序. 
 3 """ 
 4  
 5 l1 = [11, 2, 3, 3, 7, 9, 11, 2, 3] 
 6 ret = list(set(l1)) 
 7 print(ret) 
 8 ret.sort(key=l1.index)  # 按值在l1中的索引进行排序 
 9 print(ret) 
10  
11  
12 l2 = [ 
13     {"name": "alex", "age": 36}, 
14     {"name": "GoldBoss", "age": 30}, 
15     {"name": "xiaoyima", "age": 18} 
16 ] 
17 # 课后作业 
18 # 以年龄来排序: 
19 l2.sort(key=lambda x: x["age"]) 
20 print(l2)