如何在Golang中分割字符串？

在Go语言中, 弦与其他语言(例如Java, C ++, python等等。它是一系列可变宽度字符, 其中每个字符都使用UTF-8编码由一个或多个字节表示。在Go字符串中, 可以使用以下功能将字符串拆分为一个切片。这些函数是在字符串包下定义的, 因此, 你必须在程序中导入字符串包才能访问这些功能：

1.拆分：此函数将字符串拆分为由给定分隔符分隔的所有子字符串, 并返回包含这些子字符串的切片。

语法如下：

func Split(str, sep string) []string

这里, str是字符串, sep是分隔符。如果str不包含给定九月和九月为非空, 则它将返回长度为1的切片, 其中仅包含str。或者, 如果九月为空, 则它将在每个UTF-8序列之后拆分。或者如果两者都str和九月为空, 则将返回一个空切片。

例子：

//Go program to illustrate how to split a string
package main
  
import (
     "fmt"
     "strings"
)
  
//Main function
func main() {
  
     //Creating and initializing the strings
     str1 := "Welcome, to the, online portal, of srcmini"
     str2 := "My dog name is Dollar"
     str3 := "I like to play Ludo"
  
     //Displaying strings
     fmt.Println( "String 1: " , str1)
     fmt.Println( "String 2: " , str2)
     fmt.Println( "String 3: " , str3)
  
     //Splitting the given strings
     //Using Split() function
     res1 := strings.Split(str1, ", " )
     res2 := strings.Split(str2, "" )
     res3 := strings.Split(str3, "!" )
     res4 := strings.Split( "" , "srcmini, geeks" )
  
     //Displaying the result
  
     fmt.Println( "\nResult 1: " , res1)
     fmt.Println( "Result 2: " , res2)
     fmt.Println( "Result 3: " , res3)
     fmt.Println( "Result 4: " , res4)
  
}

输出如下：

String 1:  Welcome, to the, online portal, of srcmini
String 2:  My dog name is Dollar
String 3:  I like to play Ludo

Result 1:  [Welcome  to the  online portal  of srcmini]
Result 2:  [M y   d o g   n a m e   i s   N a w a b]
Result 3:  [I like to play Ludo]
Result 4:  []

2. SplitAfter：此函数在给定分隔符的每个实例之后将字符串拆分为所有子字符串, 并返回包含这些子字符串的切片。

语法如下：

func SplitAfter(str, sep string) []string

这里, str是字符串, sep是分隔符。如果str不包含给定九月和九月为非空, 则它将返回长度为1的切片, 其中仅包含str。或者, 如果九月为空, 则它将在每个UTF-8序列之后拆分。或者如果两者都str和九月为空, 则将返回一个空切片。

例子：

//Go program to illustrate how to split a string
package main
  
import (
     "fmt"
     "strings"
)
  
//Main function
func main() {
  
     //Creating and initializing the strings
     str1 := "Welcome, to the, online portal, of srcmini"
     str2 := "My dog name is Dollar"
     str3 := "I like to play Ludo"
  
     //Displaying strings
     fmt.Println( "String 1: " , str1)
     fmt.Println( "String 2: " , str2)
     fmt.Println( "String 3: " , str3)
  
     //Splitting the given strings
     //Using SplitAfter() function
     res1 := strings.SplitAfter(str1, ", " )
     res2 := strings.SplitAfter(str2, "" )
     res3 := strings.SplitAfter(str3, "!" )
     res4 := strings.SplitAfter( "" , "srcmini, geeks" )
  
     //Displaying the result
     fmt.Println( "\nResult 1: " , res1)
     fmt.Println( "Result 2: " , res2)
     fmt.Println( "Result 3: " , res3)
     fmt.Println( "Result 4: " , res4)
  
}

输出如下：

String 1:  Welcome, to the, online portal, of srcmini
String 2:  My dog name is Dollar
String 3:  I like to play Ludo

Result 1:  [Welcome, to the, online portal, of srcmini]
Result 2:  [M y   d o g   n a m e   i s   N a w a b]
Result 3:  [I like to play Ludo]
Result 4:  []

3. SplitAfterN：此函数在给定分隔符的每个实例之后将字符串拆分为所有子字符串, 并返回包含这些子字符串的切片。

语法如下：

func SplitAfterN(str, sep string, m int) []string

这里, str是字符串, 九月是分隔符, m用于查找要返回的子字符串的数量。在这里, 如果m> 0, 那么最多返回米子字符串和最后一个字符串子字符串将不会拆分。如果m == 0, 则它将返回nil。如果m <0, 那么它将返回所有子字符串。

例子：

//Go program to illustrate how to split a string
package main
  
import (
     "fmt"
     "strings"
)
  
//Main function
func main() {
  
     //Creating and initializing the strings
     str1 := "Welcome, to the, online portal, of srcmini"
     str2 := "My dog name is Dollar"
     str3 := "I like to play Ludo"
  
     //Displaying strings
     fmt.Println( "String 1: " , str1)
     fmt.Println( "String 2: " , str2)
     fmt.Println( "String 3: " , str3)
  
     //Splitting the given strings
     //Using SplitAfterN() function
     res1 := strings.SplitAfterN(str1, ", " , 2)
     res2 := strings.SplitAfterN(str2, "" , 4)
     res3 := strings.SplitAfterN(str3, "!" , 1)
     res4 := strings.SplitAfterN( "" , "srcmini, geeks" , 3)
  
     //Displaying the result
     fmt.Println( "\nResult 1: " , res1)
     fmt.Println( "Result 2: " , res2)
     fmt.Println( "Result 3: " , res3)
     fmt.Println( "Result 4: " , res4)
  
}

输出如下：

String 1:  Welcome, to the, online portal, of srcmini
String 2:  My dog name is Dollar
String 3:  I like to play Ludo

Result 1:  [Welcome, to the, online portal, of srcmini]
Result 2:  [M y   dog name is Dollar]
Result 3:  [I like to play Ludo]
Result 4:  []