58. Length of Last Word (Easy)
https://leetcode.com/problems/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.
Example:
Input: "Hello World" Output: 5
Solutions
class Solution {
public int lengthOfLastWord(String s) {
if (s == null || s.length() == 0) {
return 0;
}
if (!s.contains(" ")) {
return s.length();
}
String[] substr = s.split(" ");
for (int i = substr.length - 1; i >= 0; i--) {
if (substr[i] != null || substr[i].length() != 0) {
return substr[i].length();
}
}
return 0;
}
}