diff --git a/Pattern10GFG.cpp b/Pattern10GFG.cpp
new file mode 100644
index 0000000..bda3955
--- /dev/null
+++ b/Pattern10GFG.cpp
@@ -0,0 +1,26 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			cout << "* " ;
+		}
+		cout << endl;
+	}
+	for (int i = 1; i < n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern11GFG.cpp b/Pattern11GFG.cpp
new file mode 100644
index 0000000..b379342
--- /dev/null
+++ b/Pattern11GFG.cpp
@@ -0,0 +1,27 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			if ((i+j) % 2 == 0)
+			{
+				cout << "0 ";
+			}
+			else
+			{
+				cout << "1 ";
+			}
+			
+		}
+		cout << endl;
+		
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern12GFG.cpp b/Pattern12GFG.cpp
new file mode 100644
index 0000000..ab09edc
--- /dev/null
+++ b/Pattern12GFG.cpp
@@ -0,0 +1,31 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		for (int j = i; j < n; j++)
+		{
+			cout << " " << " ";
+		}
+		for (int j = n - i; j > 0; j--)
+		{
+			cout << " " << " ";
+		}
+		for (int j = i; j > 0; j--)
+		{
+			cout << j << " ";
+		}
+		
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern13GFG.cpp b/Pattern13GFG.cpp
new file mode 100644
index 0000000..4d9f080
--- /dev/null
+++ b/Pattern13GFG.cpp
@@ -0,0 +1,24 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	int nk = 0;
+	int kk = 0;
+	for (int i = 1; i <= n; i++)
+	{
+		nk = kk;
+		for (int j = 1; j <= i; j++)
+		{
+			nk += 1;
+			cout << nk << " ";
+		}
+		
+		kk = nk;
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern14GFG.cpp b/Pattern14GFG.cpp
new file mode 100644
index 0000000..0ff467f
--- /dev/null
+++ b/Pattern14GFG.cpp
@@ -0,0 +1,19 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = 1; j <= i; j++)
+		{
+			cout << char(64 + j);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern15GFG.cpp b/Pattern15GFG.cpp
new file mode 100644
index 0000000..7053517
--- /dev/null
+++ b/Pattern15GFG.cpp
@@ -0,0 +1,20 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	int k = 0;
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = n, k = 0; j >= i; j--, k++)
+		{
+			cout << char(65 + k);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern16GFG.cpp b/Pattern16GFG.cpp
new file mode 100644
index 0000000..f5328b2
--- /dev/null
+++ b/Pattern16GFG.cpp
@@ -0,0 +1,19 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = 0; j < i; j++)
+		{
+			cout << char(64 + i);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern17GFG.cpp b/Pattern17GFG.cpp
new file mode 100644
index 0000000..93a7abc
--- /dev/null
+++ b/Pattern17GFG.cpp
@@ -0,0 +1,29 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << " ";
+		}
+		for (int j = 0; j < i; j++)
+		{
+			cout << char(65 + j);
+		}
+		for (int j = i-1; j > 0; j--)
+		{
+			cout << char(64 + j);
+		}
+		
+		
+		
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern18GFG.cpp b/Pattern18GFG.cpp
new file mode 100644
index 0000000..955a373
--- /dev/null
+++ b/Pattern18GFG.cpp
@@ -0,0 +1,18 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = n; i >= 1; i--)
+	{
+		for (int j = n; j >= i; j--)
+		{
+			cout << char(64 + j) << " ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern19GFG.cpp b/Pattern19GFG.cpp
new file mode 100644
index 0000000..adf6a84
--- /dev/null
+++ b/Pattern19GFG.cpp
@@ -0,0 +1,116 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	// A =  65 
+	// Upper portion
+	for (int i = 0; i < n; i++)
+	{
+		// Upper Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Upper Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Upper Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Upper Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	// Lower Portion
+	for (int i = n-1; i >= 0; i--)
+	{
+		// Lower Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Lower Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Lower Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Lower Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	n = 10;
+	// Upper portion
+	for (int i = 0; i < n; i++)
+	{
+		// Upper Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Upper Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Upper Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Upper Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	// Lower Portion
+	for (int i = n-1; i >= 0; i--)
+	{
+		// Lower Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Lower Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Lower Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Lower Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern1GFG.cpp b/Pattern1GFG.cpp
new file mode 100644
index 0000000..01d8ab0
--- /dev/null
+++ b/Pattern1GFG.cpp
@@ -0,0 +1,19 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	int i, j;
+	for (i = 0; i < n; i++)
+	{
+		for (j = 0; j < n; j++)
+		{
+			cout << "* ";
+		}
+		cout << "" << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern20GFG.cpp b/Pattern20GFG.cpp
new file mode 100644
index 0000000..3c771c4
--- /dev/null
+++ b/Pattern20GFG.cpp
@@ -0,0 +1,60 @@
+#include<iostream>
+using namespace std;
+
+int main()
+{
+    int n = 5;
+	// Lower Portion
+	for (int i = n-1; i > 0; i--)
+	{
+		// Lower Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Lower Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Lower Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Lower Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+    // Upper portion
+	for (int i = 0; i < n; i++)
+	{
+		// Upper Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Upper Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Upper Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Upper Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+    return 0;
+}
diff --git a/Pattern21GFG.cpp b/Pattern21GFG.cpp
new file mode 100644
index 0000000..5c76004
--- /dev/null
+++ b/Pattern21GFG.cpp
@@ -0,0 +1,34 @@
+#include<iostream>
+using namespace std;
+
+int main()
+{
+    int n = 5;
+	for (int i = 0; i < n; i++)
+	{
+		if (i == 0 || i == n - 1)
+		{
+			for (int j = 0; j < n; j++)
+			{
+				cout << "*";
+			}
+			
+		}
+		else
+		{
+			for (int j = 0; j < n; j++)
+			{
+				if (j == 0 || j == n - 1)
+				{
+					cout << "*";
+				}
+				else cout << " ";
+				
+			}
+			
+		}
+				
+		cout << endl;
+	}
+    return 0;
+}
diff --git a/Pattern22GFG.cpp b/Pattern22GFG.cpp
new file mode 100644
index 0000000..ec23f31
--- /dev/null
+++ b/Pattern22GFG.cpp
@@ -0,0 +1,23 @@
+#include<iostream>
+using namespace std;
+
+int main()
+{
+    int n = 5;
+	int top, bottom, left, right, minis;
+	for (int i = 0; i < 2*n-1; i++)
+	{
+		for (int j = 0; j < 2*n-1; j++)
+		{
+			top = i;
+			bottom = (2*n-2)-i;
+			right = (2*n-2)-j;
+			left = j;
+			minis = min(min(top,bottom), min(left, right));
+			cout << n - minis << " ";
+		}
+		
+		cout << endl;
+	}
+    return 0;
+}
diff --git a/Pattern2GFG.cpp b/Pattern2GFG.cpp
new file mode 100644
index 0000000..40615d1
--- /dev/null
+++ b/Pattern2GFG.cpp
@@ -0,0 +1,18 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	int i,j;
+	for (i = 1; i <= n; i++)
+	{
+		for (j = 1; j <= i; j++)
+		{
+			cout << "* ";
+		}
+		cout << "" << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern3GFG.cpp b/Pattern3GFG.cpp
new file mode 100644
index 0000000..fda4597
--- /dev/null
+++ b/Pattern3GFG.cpp
@@ -0,0 +1,17 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for(int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern4GFG.cpp b/Pattern4GFG.cpp
new file mode 100644
index 0000000..0d98305
--- /dev/null
+++ b/Pattern4GFG.cpp
@@ -0,0 +1,17 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << i << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern5GFG.cpp b/Pattern5GFG.cpp
new file mode 100644
index 0000000..c0e79a5
--- /dev/null
+++ b/Pattern5GFG.cpp
@@ -0,0 +1,17 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 0; i < n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern6GFG.cpp b/Pattern6GFG.cpp
new file mode 100644
index 0000000..22aed07
--- /dev/null
+++ b/Pattern6GFG.cpp
@@ -0,0 +1,17 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = n; i > 0; i--)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern7GFG.cpp b/Pattern7GFG.cpp
new file mode 100644
index 0000000..3382f8b
--- /dev/null
+++ b/Pattern7GFG.cpp
@@ -0,0 +1,26 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = n; i > 0; i--)
+	{
+		for (int j = 1; j < i; j++)
+		{
+			cout << " ";
+		}
+		int k = n - i + 1;
+		for (int j = 0; j < k; j++)
+		{
+			cout << "*";
+		}
+		for (int j = i; j < n; j++)
+		{
+			cout << "*";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern8GFG.cpp b/Pattern8GFG.cpp
new file mode 100644
index 0000000..e9a87ea
--- /dev/null
+++ b/Pattern8GFG.cpp
@@ -0,0 +1,26 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 0; i < n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			cout << " ";
+		}
+		for (int j = i; j < n - 1; j++)
+		{
+			cout << "*";
+		}
+		int k = n - i + 1;
+		for (int j = 0; j < k - 1; j++)
+		{
+			cout << "*";
+		}
+		cout << endl;
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/Pattern9GFG.cpp b/Pattern9GFG.cpp
new file mode 100644
index 0000000..665eba7
--- /dev/null
+++ b/Pattern9GFG.cpp
@@ -0,0 +1,34 @@
+#include<iostream>
+using namespace std;
+
+int main() 
+{
+	int n;
+	n =  8;
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << " ";
+		}
+		for (int j = 0; j < i; j++)
+		{
+			cout << "* " ;
+		}
+		cout << endl;
+	}
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j < i; j++)
+		{
+			cout << " " ;
+		}
+		for (int j = n; j >= i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..8cc3c98
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,581 @@
+#include<iostream>
+using namespace std;
+
+int Pattern1(int n) 
+{
+	int i, j;
+	for (i = 0; i < n; i++)
+	{
+		for (j = 0; j < n; j++)
+		{
+			cout << "* ";
+		}
+		cout << "" << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern2(int n) 
+{
+	int i,j;
+	for (i = 1; i <= n; i++)
+	{
+		for (j = 1; j <= i; j++)
+		{
+			cout << "* ";
+		}
+		cout << "" << endl;
+	}
+	return 0;
+}
+
+int Pattern3(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for(int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern4(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << i << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern5(int n) 
+{
+	for (int i = 0; i < n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern6(int n) 
+{
+	for (int i = n; i > 0; i--)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern7(int n) 
+{
+	for (int i = n; i > 0; i--)
+	{
+		for (int j = 1; j < i; j++)
+		{
+			cout << " ";
+		}
+		int k = n - i + 1;
+		for (int j = 0; j < k; j++)
+		{
+			cout << "*";
+		}
+		for (int j = i; j < n; j++)
+		{
+			cout << "*";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern8(int n) 
+{
+	for (int i = 0; i < n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			cout << " ";
+		}
+		for (int j = i; j < n - 1; j++)
+		{
+			cout << "*";
+		}
+		int k = n - i + 1;
+		for (int j = 0; j < k - 1; j++)
+		{
+			cout << "*";
+		}
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern9(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << " ";
+		}
+		for (int j = 0; j < i; j++)
+		{
+			cout << "* " ;
+		}
+		cout << endl;
+	}
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j < i; j++)
+		{
+			cout << " " ;
+		}
+		for (int j = n; j >= i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern10(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			cout << "* " ;
+		}
+		cout << endl;
+	}
+	for (int i = 1; i < n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << "* ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern11(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 0; j < i; j++)
+		{
+			if ((i+j) % 2 == 0)
+			{
+				cout << "0 ";
+			}
+			else
+			{
+				cout << "1 ";
+			}
+			
+		}
+		cout << endl;
+		
+	}
+	
+	return 0;
+}
+
+int Pattern12(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = 1; j <= i; j++)
+		{
+			cout << j << " ";
+		}
+		for (int j = i; j < n; j++)
+		{
+			cout << " " << " ";
+		}
+		for (int j = n - i; j > 0; j--)
+		{
+			cout << " " << " ";
+		}
+		for (int j = i; j > 0; j--)
+		{
+			cout << j << " ";
+		}
+		
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern13(int n) 
+{
+	int nk = 0;
+	int kk = 0;
+	for (int i = 1; i <= n; i++)
+	{
+		nk = kk;
+		for (int j = 1; j <= i; j++)
+		{
+			nk += 1;
+			cout << nk << " ";
+		}
+		
+		kk = nk;
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern14(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = 1; j <= i; j++)
+		{
+			cout << char(64 + j);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern15(int n) 
+{
+	int k = 0;
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = n, k = 0; j >= i; j--, k++)
+		{
+			cout << char(65 + k);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern16(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		// A = 65
+		for (int j = 0; j < i; j++)
+		{
+			cout << char(64 + i);
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern17(int n) 
+{
+	for (int i = 1; i <= n; i++)
+	{
+		for (int j = n; j > i; j--)
+		{
+			cout << " ";
+		}
+		for (int j = 0; j < i; j++)
+		{
+			cout << char(65 + j);
+		}
+		for (int j = i-1; j > 0; j--)
+		{
+			cout << char(64 + j);
+		}
+		
+		
+		
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern18(int n) 
+{
+	for (int i = n; i >= 1; i--)
+	{
+		for (int j = n; j >= i; j--)
+		{
+			cout << char(64 + j) << " ";
+		}
+		cout << endl;
+	}
+	
+	return 0;
+}
+
+int Pattern19(int n) 
+{
+	// A =  65 
+	// Upper portion
+	for (int i = 0; i < n; i++)
+	{
+		// Upper Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Upper Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Upper Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Upper Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	// Lower Portion
+	for (int i = n-1; i >= 0; i--)
+	{
+		// Lower Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Lower Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Lower Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Lower Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+	return 0;
+}
+
+int Pattern20(int n)
+{
+	// Lower Portion
+	for (int i = n-1; i > 0; i--)
+	{
+		// Lower Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Lower Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Lower Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Lower Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+    // Upper portion
+	for (int i = 0; i < n; i++)
+	{
+		// Upper Left
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		// Space for Upper Left
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Space for Upper Right
+		for (int j = 0; j < i; j++)
+		{
+			cout<<" ";
+		}
+		// Upper Right Pattern
+		for (int j = n; j > i; j--)
+		{
+			cout << "*";
+		}
+		
+		cout << endl;
+	}
+    return 0;
+}
+
+int Pattern21(int n)
+{
+	for (int i = 0; i < n; i++)
+	{
+		if (i == 0 || i == n - 1)
+		{
+			for (int j = 0; j < n; j++)
+			{
+				cout << "*";
+			}
+			
+		}
+		else
+		{
+			for (int j = 0; j < n; j++)
+			{
+				if (j == 0 || j == n - 1)
+				{
+					cout << "*";
+				}
+				else cout << " ";
+				
+			}
+			
+		}
+				
+		cout << endl;
+	}
+    return 0;
+}
+
+int Pattern22(int n)
+{
+	int top, bottom, left, right, minis;
+	for (int i = 0; i < 2*n-1; i++)
+	{
+		for (int j = 0; j < 2*n-1; j++)
+		{
+			top = i;
+			bottom = (2*n-2)-i;
+			right = (2*n-2)-j;
+			left = j;
+			minis = min(min(top,bottom), min(left, right));
+			cout << n - minis << " ";
+		}
+		
+		cout << endl;
+	}
+    return 0;
+}
+
+int main()
+{
+    int n, pattNum;
+    cout << "Enter value of n: ";
+    cin >> n;
+    cout << "Enter Pattern number: ";
+    cin >> pattNum;
+    switch (pattNum)
+    {
+    case 1:
+        Pattern1(n);
+        break;
+    case 2:
+        Pattern2(n);
+        break;
+    case 3:
+        Pattern3(n);
+        break;
+    case 4:
+        Pattern4(n);
+        break;
+    case 5:
+        Pattern5(n);
+        break;
+    case 6:
+        Pattern6(n);
+        break;
+    case 7:
+        Pattern7(n);
+        break;
+    case 8:
+        Pattern8(n);
+        break;
+    case 9:
+        Pattern9(n);
+        break;
+    case 10:
+        Pattern10(n);
+        break;
+    case 11:
+        Pattern11(n);
+        break;
+    case 12:
+        Pattern12(n);
+        break;
+    case 13:
+        Pattern13(n);
+        break;
+    case 14:
+        Pattern14(n);
+        break;
+    case 15:
+        Pattern15(n);
+        break;
+    case 16:
+        Pattern16(n);
+        break;
+    case 17:
+        Pattern17(n);
+        break;
+    case 18:
+        Pattern18(n);
+        break;
+    case 19:
+        Pattern19(n);
+        break;
+    case 20:
+        Pattern20(n);
+        break;
+    case 21:
+        Pattern21(n);
+        break;
+    case 22:
+        Pattern22(n);
+        break;
+    default:
+        break;
+    }
+    return 0;
+}
\ No newline at end of file