// test20.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include<iostream>

#include<vector>

#include<string>

#include<queue>

#include<stack>

#include<cstring>

#include<string.h>

#include<deque>

using namespace std;

class Solution {

public:

	int FirstNotRepeatingChar(string str) {

		if (str == "")

			return -1;

		int site = 0;

		int flag = 0;

		for (int i = 0;i < str.length();i++)

		{

			char ch = str[i];

			for (int j = 0;j < str.length();j++)

			{

				if (i != j) //i和j相同的话就是比较的同一个字符

				{

					if (ch == str[j]) break;

					if (j == str.length() - 1) flag = 1; //已经找完所有的数据

				}

			}

			if (flag == 1)

			{

				site = i+1;

				break;

			}

		}

		return site;

	}

};

int main()

{

	Solution so;

	//int count = so.FirstNotRepeatingChar("wangdanwang");

	int count = so.FirstNotRepeatingChar("");

	cout << count << endl;

	cout << endl;

	return 0;

}