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 class Solution { public int lengthOfLastWord(String s) { int count = 0; if(s.length()==0) return 0; while(s.endsWith(" ")){ s=s.substring(0, s.length()-1); } if(s.length()==0) return 0; int length=s.length()-1; while(s.charAt(length)!=' '){ count++; length--; if(length<0) break; } return count; } }