pattern1.cpp

#include <iostream>
using namespace std;
int main()
{
    //       1 1 1 1 1
    //       1 2 2 2 1
    //       1 2 3 2 1
    //       1 2 2 2 1
    //       1 1 1 1 1
    
    int x;
    cin >> x;
    int p = x;
    if (x % 2 != 0)
    {
        int i = 1;
        while (p >= 1)
        {
            for (int j = 1; j <= i; j++)
            {
                if (j == x - 1 - ((x / 2) - 1))
                    continue;
                cout << j << "\t";
            }
            for (int j = p - 2; j > 0; j--)
            {
                cout << i << "\t";
            }
            for (int j = i; j > 0; j--)
            {
                cout << j << "\t";
            }
            cout << endl;
            p = p - 2;
            i = i + 1;
        }
        p = p + 4;
        while (p != x + 2)
        {
            for (int j = 1; j < i - 2; j++)
            {
                cout << j << "\t";
            }
            for (int j = p - 1; j > 0; j--)
            {
                cout << i - 2 << "\t";
            }
            for (int j = i - 2; j > 0; j--)
            {
                cout << j << "\t";
            }
            p = p + 2;
            i = i - 1;
            cout << endl;
        }
    }
    else
    {
        int i = 1;
        while (p >= 1)
        {
            for (int j = 1; j <= i; j++)
            {

                cout << j << "\t";
            }
            for (int j = p - 2; j > 0; j--)
            {
                cout << i << "\t";
            }
            for (int j = i; j > 0; j--)
            {
                cout << j << "\t";
            }
            cout << endl;
            p = p - 2;
            i = i + 1;
        }
        p = p + 2;
        i = i - 1;
        for (int j = 1; j < i; j++)
            cout << j << "\t";
        for (int j = p; j > 0; j--)
        {
            cout << i << "\t";
        }
        for (int j = i - 1; j > 0; j--)
            cout << j << "\t";
        cout << endl;
        i = i + 1;
        p = p + 2;

        while (p != x + 2)
        {
            for (int j = 1; j < i - 2; j++)
            {
                cout << j << "\t";
            }
            for (int j = p - 1; j > 0; j--)
            {
                cout << i - 2 << "\t";
            }
            for (int j = i - 2; j > 0; j--)
            {
                cout << j << "\t";
            }
            p = p + 2;
            i = i - 1;
            cout << endl;
        }
    }
    return 0;
}