leetcode Length of Last Word

Length of Last Word

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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.

// test58lengthOfLastWord.cpp : 定義控制檯應用程序的入口點。
//


#include "stdafx.h"
#include "iostream"
#include "string"


using std::string;
int lengthOfLastWord(string s);


int _tmain(int argc, _TCHAR* argv[])
{
int n = lengthOfLastWord("  hello haha  ");
return 0;
}


/*
總共幾種情況
"hello"  "  hello world" "hello wor" "hello haha   " "   "
*/
int lengthOfLastWord(string s) 
{
int n = s.size();
if (n < 1)
return n;
int currentLen = 0;
int count = 0;
for (auto i = 0; i < n; i++)
{
if (s[i] == ' ')
{
if (count == 0)
continue;
else
{
currentLen = count;
count = 0;
continue;
}
}
count++;
}
if (count != 0)
currentLen = count;
return currentLen;
}