arrays - Swift:具有唯一键和与键匹配的一组值的字符串字典

Question

我们如何像示例一样在 Swift 中创建排序字典？

数组中的值数据是随机的。值数组可能会更长。

var exampleData = [ [["Section1" : ["11","Green"]   ],
                     [["Section1" : ["23","Blue"]    ],
                     [["Section1" : ["344","Yellow"]  ],
                     [["Section2" : ["100","Tall"]    ],
                     [["Section2" : ["232","Short"]   ],
                     [["Section3" : ["112","Number"]  ],
                     [["Section3" : ["222","String"]  ],

var sortedData = [["Section1" : [ ["11","Green"],  ["23","Blue"],["344","Yellow"] ]],
                  ["Section2" : [ ["100","Tall"],  ["232","Short"] ]],
                  ["Section3" : [ ["112","Number"],["222","String"] ]]]

Answer 1

你不知道。但是您可以将所有值放入元组数组中并对它们进行排序。或者只是从元组数组开始，并且仅在以下情况下添加值:

1. 如果键值是唯一的(每个数组索引处元组中的第一个值)，或者
2. 如果键值预先存在，则使用要输入的新元组更新值元组。

请务必在添加每个新项目后重新使用。