算法练习(26) leetcode 58. 最后一个单词的长度

https://leetcode-cn.com/problems/length-of-last-word/

class Solution { public int lengthOfLastWord(String s) { if(s.length()==0){ return 0; } if (s.length()-1==s.indexOf(' ')){ return s.length()-1; } if (s.lastIndexOf(' ')==-1){ return s.length(); } int index1=-1,index2=-1; boolean flag=false; for (int i=s.length()-1;i>=0;i--) { if (s.charAt(i) != ' ' && !flag) { flag = true; index2=i; } if (flag&&s.charAt(i)==' ') { index1=i; break; } } return index2-index1; } }