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.

题意：判断最后一个单词的长度。

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;    }};

public class Solution {    public int lengthOfLastWord(String s) {    int count = 0, ans = 0;    int cur = 0;    for (; cur < s.length(); cur++) {    count = (s.charAt(cur) == ' ') ? 0 : count+1;    ans = count > 0 ? count : ans;    }        return ans;    }}