[LeetCode][JavaScript]Length of Last Word

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Length of Last Word

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.

For example, 
Given s = "Hello World",
return 5.

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

 

 

 

 

求最後一個單詞的長度。

js split方法可以傳Regex作為參數，處理這題就很方便。

1 /**2  * @param {string} s3  * @return {number}4  */5 var lengthOfLastWord = function(s) {6     var splitArr = s.trim().split(/ +/);7     return splitArr ? splitArr[splitArr.length - 1].length : 0;8 };

 

 

[LeetCode][JavaScript]Length of Last Word