从基于另一个数组的数组中删除对象

问题描述

我有两个这样的数组:

var arrayA = ["Mike", "James", "Stacey", "Steve"]
var arrayB = ["Steve", "Gemma", "James", "Lucy"]

如您所见，James和Steve匹配，我希望能够将它们从arrayA中删除.我怎么写这个?

As you can see, James and Steve match and I want to be able to remove them from arrayA. How would I write this?

推荐答案

像这样:

var arrayA = ["Mike", "James", "Stacey", "Steve"]
var arrayB = ["Steve", "Gemma", "James", "Lucy"]
for word in arrayB {
    if let ix = find(arrayA, word) {
        arrayA.removeAtIndex(ix)
    }
}
// now arrayA is ["Mike", "Stacey"]

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