Length of last word

Leetcode 58 problem.

Given a string s consisting of words and spaces, return the length of the last word in the string. A word is a maximal substring consisting of non-space characters only.

Go

Time complexity: $O(n)$ - n is a length of an string
Auxiliary space: $O(n)$ - n is a length of an string

import "strings"

func lengthOfLastWord(s string) int {
    text := strings.Trim(s, " ")

    var maxCharacters bool = false
    maxLen := 0

    // stop on the end of the text or on whitespace
    for i := len(text)-1; i >= 0 && maxCharacters == false; i-- {
        if (text[i] == ' ') {
            maxCharacters = true
            break
        }
        maxLen++
    }

    return maxLen
}

thoughtbook

Length of last word

Go