[LeeCode] Length of Last Word

[LeeCode] 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.

It's easy to find the length of the last word in a string. Just be careful not to cross-border access ~ Code:

Class Solution {public: int lengthOfLastWord (const char * s) {int len = strlen (s); if (! Len) return 0; int I = len-1; while (I> = 0 & s [I] = '') {I --;} int count = 0; while (I> = 0 & s [I]! = '') {Count ++; I --;} return count ;}};