scala集合排序_如何对Scala集合进行排序？

偏执的太偏执、 2023-03-05 11:57 18阅读 0赞

scala集合排序

The collection includes all those data structures that are used to store multiple elements or collections of elements like Array, List, Set, Vector, etc.

集合包括所有用于存储多个元素或元素集合(如数组，列表，集合，向量等)的数据结构。

While working with **collection sorting** them can be beneficial to the programmers are comparison operators are quite effective.

尽管使用**集合排序**可以使程序员受益，但比较运算符非常有效。

To **sort collections** there are some methods provided to you and here we will learn how to use them,

要**对集合**进行**排序** ，我们提供了一些方法，在这里我们将学习如何使用它们，

## 1)使用排序方法 **(**1) Using sorted method**)** ##

The sorted method is used to sort collections in Scala.

sorted方法用于对Scala中的集合进行排序。

**Syntax:**

**句法：**

val sortedColl = Coll.sorted

**Program:**

**程序：**

object MyObject {
        
        def main(args: Array[String]) {
        
            val seq = Seq(92.23 , 43.12 , 31.2, 7.87)
        
            println("Unsorted Sequence: " + seq)   
        
            val sortedSeq = seq.sorted
            println("Sorted Sequence: " + sortedSeq)   
        
            val lang = Vector("Scala" ,"C" , "HTML" , "Python", "Java")
            println("Unsorted String Vector: " + lang)
        
            val sortedLang = lang.sorted
            println("Sorted String Vector: " + sortedLang)
    }
    }

**Output**

**输出量**

Unsorted Sequence: List(92.23, 43.12, 31.2, 7.87)
    Sorted Sequence: List(7.87, 31.2, 43.12, 92.23)
    Unsorted String Vector: Vector(Scala, C, HTML, Python, Java)
    Sorted String Vector: Vector(C, HTML, Java, Python, Scala)

## 2)使用sortWith()方法 **(**2) Using sortWith() Method**)** ##

The sortWith() method sorts elements of the collection the way you want.

sortWith()方法以所需的方式对集合中的元素进行排序。

sortWith(condition)

**Program:**

**程序：**

object MyObject {
        
        def main(args: Array[String]) {
        
            val seq = Seq(92.23 , 43.12 , 31.2, 7.87)
    
            println("Unsorted Sequence: " + seq)   
    
            val sortedSeq = seq.sortWith(_>_)
            println("Sorted Sequence: " + sortedSeq)   
    
            val lang = Vector("Scala" ,"C" , "HTML" , "Python", "Java")
            println("Unsorted String Vector: " + lang)
    
            val sortedLang = lang.sortWith(_.length<_.length)
            println("Sorted String Vector: " + sortedLang)
        }
    }

**Output**

**输出量**

Unsorted Sequence: List(92.23, 43.12, 31.2, 7.87)
    Sorted Sequence: List(92.23, 43.12, 31.2, 7.87)
    Unsorted String Vector: Vector(Scala, C, HTML, Python, Java)
    Sorted String Vector: Vector(C, HTML, Java, Scala, Python)

> 翻译自: [https://www.includehelp.com/scala/how-to-sort-scala-collections.aspx][https_www.includehelp.com_scala_how-to-sort-scala-collections.aspx]

scala集合排序

[https_www.includehelp.com_scala_how-to-sort-scala-collections.aspx]: https://www.includehelp.com/scala/how-to-sort-scala-collections.aspx