scala 拆分字符串翻轉

A string is a collection that stores multiple characters, it is an immutable sequence which cannot be changed.

字符串是存儲多個字符的集合，它是不可更改的不可更改的序列。

分割字符串 (Splitting a string)

In Scala, using the split() method one can split the string in an array based on the required separator like commas, spaces, line-breaks, symbols or any regular expression.

在Scala中，使用split()方法可以根據所需的分隔符(例如逗號，空格，換行符，符號或任何正則表達式)將字符串拆分為數組。

Syntax:

句法：

    string.split("saperator")

程序在Scala中分割字符串 (Program to split a string in Scala)

object MyClass {
def main(args: Array[String]) {
val string = "Hello! Welcome to includeHelp..."
println(string)
val stringContents = string.split(" ")
println("Content of the string are: ")
for(i <- 0 to stringContents.length-1)
println(stringContents(i))
}
}

Output

輸出量

Hello! Welcome to includeHelp...
Content of the string are: 
Hello!
Welcome
to
includeHelp...

This method is useful when we are working with data that are encoded in a string like URL-encoded string, multiline data from servers, etc where the string need to be split to extract information. One major type is when data comes in the form of CSV (comma-separated value) strings which is most common and needs each value to be separated from the string.

當我們使用以字符串編碼的數據(例如URL編碼的字符串，來自服務器的多行數據)等需要對字符串進行拆分以提取信息時，此方法很有用。 一種主要類型是當數據以CSV(逗號分隔值)字符串的形式出現時，這是最常見的字符串，需要將每個值與字符串分開。

Let's see how to,

讓我們看看如何

程序使用拆分方法拆分CSV字符串 (Program to split a CSV string using split method)

object MyClass {
def main(args: Array[String]) {
val CSVstring = "ThunderBird350 , S1000RR, Iron883, StreetTripleRS"
println(CSVstring)
val stringContents = CSVstring.split(", ")
println("Content of the string are: ")
for(i <- 0 to stringContents.length-1)
println(stringContents(i))
}
}

Output

輸出量

ThunderBird350 , S1000RR, Iron883, StreetTripleRS
Content of the string are: 
ThunderBird350 
S1000RR
Iron883
StreetTripleRS

使用正則表達式分割字符串 (Splitting String using Regular Expressions)

In the split method, a regular expression(regex) can also be used as a separator to split strings.

在split方法中，正則表達式(regex)也可用作分隔符以分隔字符串。

object MyClass {
def main(args: Array[String]) {
val string = "1C 2C++ 3Java"
println(string)
val stringContents = string.split("\\d+")
println("Content of the string are: ")
for(i <- 0 to stringContents.length-1)
println(stringContents(i))
}
}

Output

輸出量

1C 2C++ 3Java
Content of the string are: C 
C++ 
Java

Here, we have separated the string using the regex \\d+ which considers any digit. In our string, the function will split every time a digit is encountered.

在這里，我們使用考慮任何數字的正則表達式\\ d +分隔了字符串。 在我們的字符串中，該函數將在每次遇到數字時拆分。

翻譯自: https://www.includehelp.com/scala/split-string.aspx

scala 拆分字符串翻轉