Go - Split String

The strings.Split() is used to break a string into a list of substrings using a specified delimiter. It returns the substrings in the form of a slice.

Delimiter: The character or pattern used to split a string (e.g., spaces, commas).

Substrings: Smaller strings are obtained after splitting the original string.

Syntax

The syntax of strings.Split() is as follows −

func Split(S string, sep string) []string

Where s is the given string and sep is the delimiter (separator) string. It returns the substrings.

Splitting Strings Using regexp and strings.Split

You can split a string using functions like regexp and strings.Split.

Example

In this example, we splits two strings using both regexp and strings.Split functions. It demonstrates splitting 'p' by the characters 'n' and 's', 'q' by the substring "Lang", and 'p' by each individual character.

package main
import (
   "fmt"
   "strings"
   "regexp"
)
func main() {
   // Intializing the Strings
   p := "oopsfunctions"
   q := "GoLang language"

   // Display the Strings
   fmt.Println("String 1:", p)
   fmt.Println("String 2:", q)

   // Using the Split Function and regexp
   r := regexp.MustCompile(`[ns]`)
   s := r.Split(p, -2)
   t := strings.Split(q, "Lang")
   u := strings.Split(p, "")

   // Display the Split Output
   fmt.Println("Split String 1: ", s)
   fmt.Println("Split String 2: ", t)
   fmt.Println("Split String 1 with delimiter:", u)
}

Output

It will generate the following output −

String 1: oopsfunctions
String 2: GoLang language
Split String 1: [oop fu ctio ]
Split String 2: [Go language]
Split String 1 with delimiter: [o o p s f u n c t i o n s]

Splitting Strings Using Delimiters

You can split a string using different delimiters like !, ,, -, and specific characters.

Example

This example splits three strings 'x', 'y', and 'w' using different delimiters ('!', ',', '-', and 'a'). It demonstrates how to split these strings and prints the resulting substrings.

package main
import (
   "fmt"
   "strings"
)
func main() {
   var x string
   var y string
   var w string

   // Intializing the Strings
   x = "Hello! World"
   y = "This, is, a, sample, program"
   w = "1-2-3-4"

   // Display the Strings
   fmt.Println("String 1:", x)
   fmt.Println("String 2:", y)
   fmt.Println("String 3:", w)

   // Using the Split Function
   res1 := strings.Split(x, "!")
   res2 := strings.Split(y, ",")
   res3 := strings.Split(w, "-")
   res4 := strings.Split(y, "a")

   // Display the Split Output
   fmt.Println("Split String 1:", res1)
   fmt.Println("Split String 2:", res2)
   fmt.Println("Split String 3:", res3)
   fmt.Println("Split String 2 with delimiter:", res4)
}

Output

It will generate the following output −

String 1: Hello! World
String 2: This, is, a, sample, program
String 3: 1-2-3-4
Split String 1: [Hello World]
Split String 2: [This is a sample program]
Split String 3: [1 2 3 4]
Split String 2 with delimiter: [This, is, , s mple, progr m]