Non-unique Elements Non-unique Elements
Elementary
EN DE EL ES FR HU JA KO PT-BR RU UK Simplified Chinese
We have prepared a set of Editor's Choice Solutions. You will see them first after you solve the mission. In order to see all other solutions you should change the filter.

你将得到一个含有整数(X)的非空列表。在这个任务里,你应该返回在此列表中的非唯一元素的列表。要做到这一点,你需要删除所有独特的元素(这是包含在一个给定的列表只有一次的元素)。解决这个任务时,不能改变列表的顺序。例如:[1,2,3,1,3]...

You should be an authorized user in order to see the full description and start solving this mission.