如何合并两个的ArrayList没有重复？ [英] How to merge two ArrayLists without duplicates?

问题描述

我有两个的ArrayList

 的ArrayList 1 = {A，B，C，D，E}
ArrayList的2 = {B，D，F，G}
 

我想有我的最终的ArrayList这将有全部之一的元素和它们只在两个不可能集中于一个元​​素。

所以，
ArrayList的最后= {A，B，C，D，E，F，G}。

我怎样才能做到这一点？

解决方案

 的（对象x：二）{
   如果（！one.contains（X））
      one.add（X）;
}
 

假设你不希望使用在注释中建议集。如果你正在寻找比这个东西票友，请澄清你的问题。

I have two arrayLists

ArrayList one = {A, B, C, D, E}
ArrayList two = {B, D, F, G}  

I want to have my final ArrayList which will have All the elements of one and the elements which are only in two and not in one.

So ArrayList final = {A, B, C, D, E, F, G}.

How can I do this?

解决方案

for (Object x : two){
   if (!one.contains(x))
      one.add(x);
}

assuming you don't want to use the set suggested in the comment. If you are looking for something fancier than this please clarify your question.

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