leetcode day07 最后一个单词的长度

1.题目描述

2.代码构思（debug）

class Solution:

"""
@param s: A string
@return: the length of last word
"""
def length_of_last_word(self, s: str) -> int:
    # write your code here
    if not s:             
        return 0          
                        
                        
    right = len(s) - 1    
    count = 0      
    while s[right] == " ":
        right -= 1
        continue
               
    for i in range(right,-1,-1):
        if s[i] != " ":
            count += 1    
        else:
            return count      
    
    return count
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