Leetcode Python Solutions Tutorial

Length of Last Word Leetcode Solution

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in this tutorial, we will solve a leetcode problem in python.

Task:

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

Solutions:

class Solution:
    def lengthOfLastWord(self, s: str) -> int:
        length = 0
        s = s.strip()
        for i in range(len(s)-1, -1, -1):
            if s[i] == ' ':
                break
            else:
                length += 1
        return length

Steps:

step1: first we declare a variable length as 0.

step2: then we loop for the string but backward, followed by using the string.strip() functions which will strip off the corners in a string.

step3: then if we encounter a white space we break out of the loop, otherwise we increment the length variable.

step4: After the loop we return the length variable.

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Leetcode Python Solutions Tutorial

Leetcode Python Solutions Tutorial

Leetcode Problems

Length of Last Word Leetcode Solution

Task:

Example 1:

Example 2:

Example 3:

Constraints:

Solutions:

Steps:

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