集合可以有重复的元素吗? [英] Can a set have duplicate elements?

问题描述

有人问我一个对我的课程作业来说有点含糊不清的问题.

I have been asked a question that is a little ambiguous for my coursework.

The array of strings is regarded as a set, i.e. unordered.

我不确定是否需要从此数组中删除重复项?

I'm not sure whether I need to remove duplicates from this array?

我试过谷歌搜索，但一个地方会告诉我一些与下一个不同的东西.任何帮助将不胜感激.

I've tried googling but one place will tell me something different to the next. Any help would be appreciated.

推荐答案

让 A={1,2,2,3,4,5,6,7,...} and B={1,2,3,4,5,6,7,...} 那么 A 中的任何元素都在 B 中并且 B 中的任何元素都在 A ==> A 包含 B 并且 B 包含 A ==> A=B.所以当然集合可以有重复的元素，只是有重复元素的那个最终会和没有重复元素的那个完全一样.

Let A={1,2,2,3,4,5,6,7,...} and B={1,2,3,4,5,6,7,...} then any element in A is in B and any element in B is in A ==> A contains B and B contains A ==> A=B. So of course sets can have duplicate elements, it's just that the one with duplicate elements would end up being exactly the same as the one without duplicate elements.

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