reverse-words-in-a-string.go

// https://leetcode.com/problems/reverse-words-in-a-string

func reverseWords(s string) string {
    words := ""
    chars := []rune(s)
    anchor := 0
    
    for i := 0; i < len(chars); i++ {
        if chars[i] == rune(' ') {
            if anchor < i {
                if len(words) > 0 {
                    words = string(chars[anchor: i + 1]) + words
                } else {
                    words = string(chars[anchor: i])
                }
            }
            
            anchor = i + 1
        }
    }
    
    if anchor < len(chars) {
        if len(words) > 0 {
            words = string(chars[anchor: len(chars)]) + " " + words
        } else {
            words = string(chars[anchor: len(chars)])
        }
    }
    
    return words
}