LengthOfLastWord

Problem

https://leetcode.com/problems/length-of-last-word/

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.

Example 1:

Input: s = "Hello World"
Output: 5
Explanation: The last word is "World" with length 5.

Example 2:

Input: s = "   fly me   to   the moon  "
Output: 4
Explanation: The last word is "moon" with length 4.

Example 3:

Input: s = "luffy is still joyboy"
Output: 6
Explanation: The last word is "joyboy" with length 6.

Constraints:

• 1 <= s.length <= 10:sup:`4`

• s consists of only English letters and spaces ' '.

• There will be at least one word in s.

Solution

Strip all the whitespace from the end of the string, then split the string by spaces. The last element in the list is the last word in the string.

Pattern

String

Code

def lengthOfLastWord(s: str) -> int:
    """Finds the length of the last word in a string.
    """
    return len(s.strip().split(' ')[-1])

Test

>>> from LengthOfLastWord import lengthOfLastWord
>>> lengthOfLastWord('Hello World')
5
>>> lengthOfLastWord('   fly me   to   the moon  ')
4
>>> lengthOfLastWord('luffy is still joyboy')
6

LengthOfLastWord.lengthOfLastWord(s: str) → int

Finds the length of the last word in a string.