ReverseString

Reverses a string

• Use make() to create an appropriate rune slice.
• Use range and len() to iterate over the string's runes and add them in reverse to the result.
• Use string() to convert the rune slice to a string.

func ReverseString(s string) string {
    o := make([]rune, len(s))
    for i, c := range s {
        o[len(s)-i-1] = c
    }
    return string(o)
}

ReverseString("hello") // "olleh"