How to Insert Character at Specific Index in String in Go - Step by Step Examples

How to Insert Character at Specific Index in String in Go ?

Answer

To insert a character at a specific index in a string in Go, you can convert the string to a rune slice, insert the character at the desired index, and then convert it back to a string.

✐ Examples

1 Insert '!' at index 5 in "Hello World"

In this example,

We create a string named str with a value of "Hello World".
We then convert the string to a rune slice to manipulate individual characters.
We insert the character '!' at index 5 in the rune slice.
Finally, we convert the rune slice back to a string.

Go Program

package main

import (
	"fmt"
)

func main() {
	str := "Hello World"
	r := []rune(str)
	r = append(r[:5], append([]rune{'!'}, r[5:]...)...)
	str = string(r)
	fmt.Println(str)
}

Output

Hello! World

Summary

In this tutorial, we learned How to Insert Character at Specific Index in String in Go language with well detailed examples.

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