POJ 3916：Duplicate Removal 将相近的重复元素删除

Duplicate Removal

Time Limit: 1000MS		Memory Limit: 65536K
Total Submissions: 1745		Accepted: 1213

Description

The company Al's Chocolate Mangos has a web site where visitors can guess how many chocolate covered mangos are in a virtual jar. Visitors type in a guess between 1 and 99 and then click on a "Submit" button. Unfortunately, the response time from the server is often long, and visitors get impatient and click "Submit" several times in a row. This generates many duplicate requests.
Your task is to write a program to assist the staff at ACM in filtering out these duplicate requests.

Input

The input consists of a series of lines, one for each web session. The first integer on a line is N, 0 < N ≤ 25, which is the number of guesses on this line. These guesses are all between 1 and 99, inclusive. The value N = 0 indicates the end of all the input.

Output

For each input data set, output a single line with the guesses in the original order, but with consecutive duplicates removed. Conclude each output line with the dollar sign character '$'. Note that there is a single space between the last integer and the dollar sign.

Sample Input

5 1 22 22 22 3
4 98 76 20 76
6 19 19 35 86 86 86
1 7
0

Sample Output

1 22 3 $
98 76 20 76 $
19 35 86 $
7 $

题意是将相近的重复元素删除。

代码：

#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <set>
#pragma warning(disable:4996)
using namespace std;

vector<int>a;
int num;

int main()
{
	int i,temp;
	while(cin>>num)
	{
		if(num==0)
			break;
		a.clear();
		for(i=1;i<=num;i++)
		{
			cin>>temp;
			a.push_back(temp);
		}
       
		vector<int>::iterator iter =unique(a.begin(),a.end());  
        a.erase(iter,a.end()); 
		for(i=0;i<a.size();i++)
		{
			cout<<a[i]<<" ";
		}
		cout<<"$"<<endl;
	}
	return 0;
}