58. Length of Last Word

2022-09-02 · leetcode, algorithms, python

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

Very easy problem. You can try out your new programming language here.

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.

Example

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

My solution

① split string s and add to list
② return length of last element of list

Input

print(s)
print(type(s))

# luffy   is still  joyboy
# <class 'str'>

① split string s and add to list

# Use `split()`, split string s by spaces,   
# and add to a list.
# No matter how many spaces exist between words, `split()` will work.

split_s = s.split()

# ['luffy', 'is', 'still', 'joyboy']

② return length of last element of list

# Get last element of list you created at ①
# Get number of length of the last element

s.split()[-1] # joyboy
len(s.split()[-1]) # 6

My answer

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