使用插入排序对字符串进行两次排序

问题描述

我正在尝试使用插入排序对（listof（strof Str Str））进行排序，但是我不知道如何从此处继续。首先，它必须按字母顺序按第一个字符串排序，然后按字母顺序按第二个字符串排序。例如：

(list (list "produce" "apple")
    (list "seed" "rice")
    (list "dairy" "milk" )
    (list "seed" "pinto")
    (list "produce" "potato")
    (list "chips" "potato")
    (list "seed" "wheat")
    (list "produce" "banana")
    (list "dairy" "cheese")
    (list "chips" "banana")
    (list "produce" "peach")
    (list "seed" "lentil")
    (list "produce" "corn")
    (list "seed" "corn")) becomes


`(list (list "chips" "banana") (list "chips" "potato") (list "dairy" "cheese") (list "dairy" "kefir") (list "dairy" "milk")` (list "chips" "potato")  (list "dairy" "cheese") (list "dairy" "kefir") (list "dairy" "milk") (list "produce" "apple") (list "produce" "banana" (list "produce" "corn")(list "produce" "peach")(list "produce" "potato")(list "seed" "corn")(list "seed" "lentil")(list "seed" "pinto"))

我写了按第一个字符串对列表的输入列表进行排序的代码后，我可以知道该怎么做吗？按第一个字符串排序后，列表如下所示：

(list ("chips" "potato") (list "chips" "banana") (list "dairy" "milk")(list "dairy" "cheese")(list "dairy" "kefir")(list "produce" "apple")(list "produce" "potato") (list "produce" "banana")(list "produce" "peach")(list "produce" "corn")(list "seed" "rice")(list "seed" "pinto")(list "seed" "wheat")(list "seed" "lentil")(list "seed" "corn"))

如何按第二个字符串对列表进行排序？非常感谢！

解决方法

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insertion-sort racket