58. Length of Last Word
Easy
Given a string s consisting of words and spaces, return the length of the last word in the string.
A word is a maximal substring1 consisting of non-space characters only.
Example 1:
-
Input:
s = "Hello World" -
Output:
5 -
Explanation:
The last word is "World" with length 5.
Example 2:
-
Input:
s = " fly me to the moon " -
Output:
4 -
Explanation:
The last word is "moon" with length 4.
Example 3:
-
Input:
s = "luffy is still joyboy" -
Output:
6 -
Explanation:
The last word is "joyboy" with length 6.
Constraints:
1 <= s.length <= 104-
sconsists of only English letters and spaces. - There will be at least one word in
s.
Solution:
class Solution {
/**
* @param String $s
* @return Integer
*/
function lengthOfLastWord($s) {
$length = 0;
for ($i = strlen($s) - 1; $i >= 0; $i--) {
if ($s[$i] == ' ') {
if ($length) {
break;
}
} else {
$length += 1;
}
}
return $length;
}
}
Contact Links
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Substring
A substring is a contiguous non-empty sequence of characters within a string.Ā ā©
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