58 Length of Last Word

1. Description

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.

 

constraints :

• 1 <= s.length <= 104
• s consists of only English letters and spaces ' '.
• There will be at least one word in s.

2. Algorithms

1. Delete blanks in each side using str.strip() method, and split by ' ' using str.split() method.
2. To get last value, make result as list using list() function and store them in s.
3. Return the length of last word.

Space Complexity : O(A) (A stands for count of words in s)

3. Codes

class Solution:
    def lengthOfLastWord(self, s: str) -> int:
        s = list(s.strip().split(' '))
        return len(s[-1])

4. Conclusion