c++学习笔记——哈希表map

题目描述：

代码实现：

#include<iostream>
#include<map>
using namespace std;
int arr[1010];
int main() 
{
	int n;
	int x;
	cin >> n;
	map<int, int> mp;
	for (int i = 0; i < n; i++)
	{
		cin >> x;
		mp[x]++;
		arr[i] = mp[x];
	}
	for (int i = 0; i < n; i++)
	{
		cout << arr[i] << " ";
	}



	return 0;
}