[LeetCode] 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

.

class Solution {
public:
int lengthOfLastWord(const char *s) {
int count = 0,last = 0;
while(*s != '\0'){
count = *s == ' ' ? 0 : count + 1;
last = count > 0 ? count : last;
s ++;
}
return last;
}
};