# 58. 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
# Solution
Approach 1: Scan the string backwards to find the last word.
# Code (Python)
Approach 1:
# Code (C++)
Approach 1:
class Solution {
public:
int lengthOfLastWord(string s) {
int len = 0;
for (int i = s.size() - 1; i >= 0; --i)
{
if (s[i] == ' ' && len > 0)
break;
else if (s[i] != ' ')
len++;
}
return len;
}
};