Algorithm

In Go (also known as Golang), strings are a sequence of bytes (characters) representing Unicode characters. Strings in Go are immutable, which means that once a string is created, it cannot be changed. Here are some basic aspects of working with strings in Go:

String Declaration and Initialization:

You can declare and initialize a string using double quotes:

go
var str1 string = "Hello, Go!" str2 := "Another string" 
 

String Concatenation:

You can concatenate strings using the + operator:

go
concatenated := str1 + " " + str2

 

String Length:

To get the length of a string, you can use the len function:

go
length := len(str1)

 

Accessing Characters:

You can access individual characters of a string using indexing:

go
firstChar := str1[0] // Access the first character 
 

String Slicing:

You can obtain substrings using slicing:

go
substring := str1[1:5] // Get characters from index 1 to 4 (excluding 5) 
 

Strings and Unicode:

Go supports Unicode characters, and strings can contain characters from any Unicode code point.

go
unicodeStr := "こんにちは世界" // Hello, world in Japanese 

 

 

Code Examples

#1 Golang Programming String

Code - Golang Programming

// Program to create a string in Golang

package main
import "fmt"

func main() {

  // create string using var
  var message1 = "Hello,"

  // create string using shorthand notation
  message2 := "Welcome to DevsEnv"

  fmt.Println(message1)
  fmt.Println(message2)
}
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Output

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Hello,
Welcome to DevsEnv

#2 Golang String using backtick (` `)

Code - Golang Programming

Program to represent a string with a backtick

package main
import "fmt"

func main() {

  //  represent string with `  `    
  message := `I love Go Programming`
    
  fmt.Println(message)
}
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Output

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I love Go Programming

#3 Access Characters of String in Go Lang Programming

Code - Golang Programming

// Program to access individual character of string

package main
import "fmt"
 
func main() {

  // create and initialize a string
  name := "Programiz"

  // access first character
  fmt.Printf("%c\n", name[0])  // P

  // access fourth character
  fmt.Printf("%c\n", name[3])  // g

  // access last character
  fmt.Printf("%c", name[8])  // z
}
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#4 Find the length of a string GoLang Programming

Code - Golang Programming

// Program to count the length of a string

package main
import "fmt"
 
func main() {
 
  // create string
  message := "Welcome to Programiz"
    
  // use len() function to count length
  stringLength := len(message)

  fmt.Println("Length of a string is:", len(stringLength))
 
}
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Output

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Length of a string is: 20

#5 Join Two Strings Together

Code - Golang Programming

// Program to concatenate two strings

package main
import "fmt"

func main() {  
  message1 := "I love"
  message2 := "Go programming"
    
  // concatenation using + operator
  result := message1 + " " + message2

  fmt.Println(result)
}
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Output

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I love Go programming

#6 Compare Two Strings in Golang programming

Code - Golang Programming

// Program to compare string using Compare()

package main
import (
  "fmt"
  "strings"
)

func main() {

  // create three strings
  string1 := "Programiz"
  string2 := "Programiz Pro"
  string3 := "Programiz"

  // compare strings
  fmt.Println(strings.Compare(string1, string2))  // -1
  fmt.Println(strings.Compare(string2, string3))  // 1
  fmt.Println(strings.Compare(string1, string3))  // 0

}
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Output

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strings.Compare(string1, string2)

#7 Check if String contains Substring

Code - Golang Programming

// Program to illustrate the use of Contains()

package main
import (
  "fmt"
  "strings"
)

func main() {

  text := "Go Programming"
  substring1 := "Go"
  substring2 := "Golang"

  // check if Go is present in Go Programming
  result := strings.Contains(text, substring1)
  fmt.Println(result)

  // check if Golang is present in Go Programming
  result = strings.Contains(text, substring2)
  fmt.Println(result)
}
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Output

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true
false

#8 Replace a String in Golang Programming

Code - Golang Programming

// Program using Replace() to replace strings

package main
import (
  "fmt"
  "strings"
)

func main() {
    
  text := "car"
  fmt.Println("Old String:", text)
  
  // replace r with t
  replacedText := strings.Replace(text, "r", "t", 1)

  fmt.Println("New String:", replacedText)
}
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Output

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Old String: car
New String: cat

#9 Change Case of Go String

Code - Golang Programming

// Program to convert a string to uppercaseand lowercase

package main
import (
  "fmt"
  "strings"
)

func main() {

  text1 := "go is fun to learn"

  // convert to uppercase
  text1 = strings.ToUpper(text1)

  fmt.Println(text1)

  text2 := "I LOVE GOLANG"

  // convert to lowercase
  text2 = strings.ToLower(text2)
  fmt.Println(text2)
}
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Output

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GO IS FUN TO LEARN
i love golang

#10 Escape Sequence in Golang String

Code - Golang Programming

package main
import "fmt"

func main() {

  // use escape character in string
  message := "This article is about \"String\" in Go Programming."

  fmt.Println(message)
}

// Output: This article is about "String" in Go Programming.
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Demonstration

Golang pragramming String