Golang : Reverse a string with unicode
Problem :
You got a string of :
世界你好! is the equivalent of Hello World! in Chinese
and you need to reverse this string.
Solution :
Use unicode/utf8
package to handle the runes and reverse the string with this program below :
package main
import (
"fmt"
"unicode/utf8"
)
var forward string = "世界你好! is the equivalent of Hello World! in Chinese"
func Reverse(s string) string {
totalLength := len(s)
buffer := make([]byte, totalLength)
for i := 0; i < totalLength; {
r, size := utf8.DecodeRuneInString(s[i:])
i += size
utf8.EncodeRune(buffer[totalLength-i:], r)
}
return string(buffer)
}
func main() {
fmt.Println("Original : ", forward)
backward := Reverse(forward)
fmt.Println("Reversed : ", backward)
}
Output :
Original : 世界你好! is the equivalent of Hello World! in Chinese
Reversed : esenihC ni !dlroW olleH fo tnelaviuqe eht si !好你界世
Hope this reverse function can be useful to you.
See also : Golang : Sort and reverse sort a slice of strings
By Adam Ng
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