[LintCode]最後の単語の長さ
2329 ワード
1 class Solution {
2 public:
3 /**
4 * @param s A string
5 * @return the length of last word
6 */
7 int lengthOfLastWord(string s) {
8 int len = 0, tail = s.length() - 1;
9 while (tail >= 0 && s[tail] == ' ') tail--;
10 while (tail >= 0 && s[tail] != ' ') {
11 len++;
12 tail--;
13 }
14 return len;
15 }
16 };