leetcode解题之58 # Length of Last Word Java版

leetcode解题之58 # Length of Last Word Java版

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.

public int lengthOfLastWord(String s) { String[] strs = s.split(" "); if (strs.length == 0) return 0; return strs[strs.length - 1].length(); } public int lengthOfLastWord(String s) { int length = s.length(); if (length == 0) return 0; int count=0; int i = length - 1; while(i>=0&&s.charAt(i)==' ') i--; for(;i>=0;i--){ if(s.charAt(i) != ' ') count++; else break; } System.out.println(count); return count; }