可以在Julia中对字典进行排序吗? [英] Is it possible to sort a dictionary in Julia?

问题描述

我已经使用zip()这样从两个数组中创建了一个字典

I have created a dictionary out of two arrays using zip() like

list1 = [1,2,3,4,5]
list2 = [6,7,8,9,19]
dictionary1 = Dict(zip(list1,list2))

现在我想按key(list1)或list2对这本词典进行排序.有人可以告诉我一种方式或功能，如何实现吗?

Now i want to sort this dictionary by key(list1) or by list2. Can somebody show me a way or function, how to realize it?

推荐答案

(希望在@Simon的答案中添加评论，但代表人数不足)

(wanted to add a comment to @Simon's answer, but not enough rep)

排序也采用了by关键字，这意味着您可以做到

Sort also takes a by keyword, which means you can do

julia> sort(collect(dictionary1), by=x->x[2])
5-element Array{Tuple{Int64,Int64},1}:
 (1,6)
 (2,7)
 (3,8)
 (4,9)
 (5,19)

还请注意，DataStructures.jl中有一个SortedDict，它保持排序顺序，还有一个OrderedDict，它保持插入顺序.最后，有一个pull请求，它允许直接对OrderedDicts进行排序(但是我需要完成并提交).

Also note that there is a SortedDict in DataStructures.jl, which maintains sort order, and there's an OrderedDict which maintains insertion order. Finally, there's a pull request which would allow direct sorting of OrderedDicts (but I need to finish it up and commit it).

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