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