[58] Length of Last Word

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题目

Given a string_s_consists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the string.

If the last word does not exist, return 0.

Note: A word is defined as a character sequence consists of non-space characters only.

Example:

Input: "Hello World"
Output: 5

解法

一

思路

首先去除首尾空格，通过lastIndexOf()方法获得“ ”最后一个空格所在位置，以得到答案。

代码

LeetCode.58.1.png


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