58. 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.

实现题。

public class Solution {
  public int lengthOfLastWord(String s) {
    char[] c = s.toCharArray();
    int count = 0;
    for (int i = c.length - 1; i >= 0; i--) {
      if (c[i] == ' ' && count > 0) {
        break;
      }
      if (c[i] != ' ') {
        count++;
      }
    }
    return count;
  }
}

posted on 2015-07-01 11:00  shini  阅读(165)  评论(0编辑  收藏  举报

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