How to reverse a string in Go?

Question

How can we reverse a simple string in Go?

Answer 1

This works on unicode strings by considering 2 things:

• range works on string by enumerating unicode characters
• string can be constructed from int slices where each element is a unicode character.

So here it goes:

func reverse(s string) string {
    o := make([]int, utf8.RuneCountInString(s));
    i := len(o);
    for _, c := range s {
        i--;
        o[i] = c;
    }
    return string(o);
}