View Code of Problem 53

#include "stdlib.h"
#include "algorithm"
#include "iostream"
#include <cstdio>
#include "string"
#include <iomanip>
#include <map>
#include <set>
#include "math.h"
using namespace std;
map<int, bool> mp;
set<string> st;

void P(int n)
{
	for (int i = 1; i <= n; i++)
	{
		for (int j = n - i; j > 0; j--)cout << " ";
		for (int k = 2 * i - 1; k > 0; k--)cout << "*";
		cout << endl;
	}
	for (int i = n - 1; i > 0; i--)
	{
		for (int j = n - i; j > 0; j--)cout << " ";
		for (int k = 2 * i - 1; k > 0; k--)cout << "*";
		cout << endl;
	}
}
int main()
{
	int n; cin >> n;
	P(n);
	return 0;
}