leetcode - 58.Length of Last Word

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

.

Solution1:

public int lengthOfLastWord(String s) {
String[] strs = s.split(" ");
return strs.length == 0 ? 0 : strs[strs.length - 1].length();
}

Solution2:

public int lengthOfLastWord1(String s) {
return s.trim().length() - 1 - s.trim().lastIndexOf(" ");
}