比较2个数组并列出差异-Swift [英] Compare 2 arrays and list the differences - Swift

问题描述

我想知道如何比较两个布尔数组并列出不匹配的布尔值.

I was wondering how one would go about comparing 2 boolean arrays and listing the non matching booleans.

我写了一个简单的2个数组的例子.

I have written up a simple example of 2 arrays.

let array1 = [true, false, true, false]
let array2 = [true, true, true, true]

我如何比较array1&并显示不匹配的数组.我正在尝试执行此操作以检查问答游戏的用户结果.

How would I compare array1 & array2 and display the non matching. I am trying to do this to check user results for a quiz game.

谢谢！

推荐答案

这里是一个实现，但是要说它到底是不是一个完全不可能，因为您尚未指定要执行的操作认为答案应该为:

Here's one implementation, but whether it is the one you are after is completely impossible to say, because you have not specified what you think the answer should be:

let answer = zip(array1, array2).map {$0.0 == $0.1}

这将为您提供布尔值的列表，如果答案与正确的答案匹配，则为true，如果答案不正确，则为false.

That gives you a list of Bool values, true if the answer matches the right answer, false if it does not.

但是，假设您想要的是正确答案的索引列表.然后您可以说:

But let's say what you wanted was a list of the indexes of those answers that are correct. Then you could say:

let answer = zip(array1, array2).enumerated().filter() {
    $1.0 == $1.1
}.map{$0.0}

如果要列出不正确正确答案的索引列表，只需将==更改为!=.

If you want a list of the indexes of those answers that are not correct, just change == to !=.

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