Go Language - Program to Reverse a String

Example 1: Using the loop

//Go Program to reverse a string using loop
package main
import "fmt"
// Main function
func main() {
    str1 := "Earth"
    str2 := "moon"
    fmt.Println(Reverse(str1))
    fmt.Println(Reverse(str2))
}
func Reverse(str string) string {
    var reverse string
    // Code to reverse a string
    for i := len(str) - 1; i >= 0; i-- {
        reverse = reverse + string(str[i])
    }
    return reverse
}

Output:

Example 2: Using recursion

//Go Program to reverse a string using recursion
package main
import (
    "fmt"
)
// Main function
func main() {
    str1 := "Earth"
    str2 := "moon"
    fmt.Println(Reverse(str1))
    fmt.Println(Reverse(str2))
}
func Reverse(str string) string {
    return reverseText(str, len(str)-1)
}
// This is reversing the string elements recursively
func reverseText(text string, location int) string {
    // Condition to stop the recursion process
    if location >= 0 {
        // Recursive method call
        return string(text[location]) + reverseText(text, location-1)
    }
    return ""
}

Output:

Example 3: Using slice

//Go Program to reverse a string using slice
package main
import "fmt"
// Main function
func main() {
    str1 := "Earth"
    str2 := "I love my country"
    fmt.Println(Reverse(str1))
    fmt.Println(Reverse(str2))
}
//Function to reverse a string
func Reverse(str string) string {
    //converting to slice of runes
    strSlice := []rune(str)
    length := len(strSlice)
    for i := 0; i < (length / 2); i++ {
        strSlice[i], strSlice[length-i-1] = strSlice[length-i-1], strSlice[i]
    }
    //converting back to string
    return string(strSlice)
}

Output: