Issue
I am looking for a function, that can sort string or []byte:
"bcad" to "abcd"
or
[]byte("bcad") to []byte("abcd")
The string only contains letters – but sorting should also work for letters and numbers.
I found sort package but not the function I want.
Solution
It feels wasteful to create a string for each character just to Join them.
Here’s one that is a little less wasteful, but with more boiler plate. playground://XEckr_rpr8
type sortRunes []rune
func (s sortRunes) Less(i, j int) bool {
return s[i] < s[j]
}
func (s sortRunes) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
func (s sortRunes) Len() int {
return len(s)
}
func SortString(s string) string {
r := []rune(s)
sort.Sort(sortRunes(r))
return string(r)
}
func main() {
w1 := "bcad"
w2 := SortString(w1)
fmt.Println(w1)
fmt.Println(w2)
}
Answered By – deft_code
Answer Checked By – Willingham (BugsFixing Volunteer)