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
Solution:
var lengthOfLastWord = function(s) { var i = s.length; while(s.charAt(i-1) !== ' ' && i > 0 ) { i--; } return s.length - i; };