From 620fcef465703a1b319fd2d6ca53b6c95a2cb4bb Mon Sep 17 00:00:00 2001
From: Vijay <viijay1999@gmail.com>
Date: Fri, 13 Oct 2023 10:43:22 +0530
Subject: [PATCH 1/3] Add StarPattern15 Java

---
 Java/Star Patterns/StarPattern15.java | 65 +++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Java/Star Patterns/StarPattern15.java

diff --git a/Java/Star Patterns/StarPattern15.java b/Java/Star Patterns/StarPattern15.java
new file mode 100644
index 00000000..3e1461c2
--- /dev/null
+++ b/Java/Star Patterns/StarPattern15.java	
@@ -0,0 +1,65 @@
+public class StarPattern15 {
+	
+	public static void main(String[] args) {
+         for(int a=1;a<=9;a++)
+         {
+        	 System.out.print("* ");
+         }
+         System.out.println();
+         
+         for(int i=2;i<=5;i++)
+         {
+        	 for(int j=5;j>=i;j--)
+        	 {
+        		 System.out.print("* ");
+        	 }
+        	 for(int k=4;k<=i*2;k++)
+        	 {
+        		 System.out.print("  ");
+        	 }
+        	 for(int l=5;l>=i;l--)
+        	 {
+        		 System.out.print("* ");
+        	 }
+        	 System.out.println();
+         }
+         
+         for(int i=1;i<=4;i++)
+         {
+        	for(int j=1;j<=i;j++)
+        	{
+        		System.out.print("* ");
+        	}
+        	for(int k=8;k>=i*2;k--)
+        	{
+        		System.out.print("  ");
+        	}
+        	for(int l=1;l<=i;l++)
+        	{
+        		System.out.print("* ");
+        	}
+        	System.out.println();
+         }
+         
+         for(int a=1;a<=9;a++)
+         {
+        	 System.out.print("* ");
+         }
+         System.out.println();
+         
+
+	  
+	}
+}
+
+/* 
+
+The output for the above program.
+
+*               * 
+* *           * *
+* * *       * * * 
+* * * *   * * * * 
+* * * * * * * * * 
+
+*/
\ No newline at end of file

From 6c5ba3eae1b270291dd9e4c9dac45029a9003b7b Mon Sep 17 00:00:00 2001
From: Vijay <viijay1999@gmail.com>
Date: Fri, 13 Oct 2023 11:07:16 +0530
Subject: [PATCH 2/3] add 8 more star pattern java programs

---
 Java/Star Patterns/StarPattern16.java | 31 ++++++++++++++++
 Java/Star Patterns/StarPattern17.java | 50 ++++++++++++++++++++++++++
 Java/Star Patterns/StarPattern18.java | 41 +++++++++++++++++++++
 Java/Star Patterns/StarPattern19.java | 35 ++++++++++++++++++
 Java/Star Patterns/StarPattern20.java | 32 +++++++++++++++++
 Java/Star Patterns/StarPattern21.java | 33 +++++++++++++++++
 Java/Star Patterns/StarPattern22.java | 52 +++++++++++++++++++++++++++
 Java/Star Patterns/StarPattern23.java | 50 ++++++++++++++++++++++++++
 8 files changed, 324 insertions(+)
 create mode 100644 Java/Star Patterns/StarPattern16.java
 create mode 100644 Java/Star Patterns/StarPattern17.java
 create mode 100644 Java/Star Patterns/StarPattern18.java
 create mode 100644 Java/Star Patterns/StarPattern19.java
 create mode 100644 Java/Star Patterns/StarPattern20.java
 create mode 100644 Java/Star Patterns/StarPattern21.java
 create mode 100644 Java/Star Patterns/StarPattern22.java
 create mode 100644 Java/Star Patterns/StarPattern23.java

diff --git a/Java/Star Patterns/StarPattern16.java b/Java/Star Patterns/StarPattern16.java
new file mode 100644
index 00000000..040d5a6d
--- /dev/null
+++ b/Java/Star Patterns/StarPattern16.java	
@@ -0,0 +1,31 @@
+public class StarPattern16 {
+
+	public static void main(String[] args) {
+		int n=5;
+		for(int i=0;i<n;i++) {
+			for(int k=0;k<=i;k++) {
+				System.out.print(" ");
+			}
+			for(int j=0;j<n;j++) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+ * * * * * 
+  * * * * * 
+   * * * * * 
+    * * * * * 
+     * * * * * 
+
+*/
+
+
diff --git a/Java/Star Patterns/StarPattern17.java b/Java/Star Patterns/StarPattern17.java
new file mode 100644
index 00000000..a66d70ed
--- /dev/null
+++ b/Java/Star Patterns/StarPattern17.java	
@@ -0,0 +1,50 @@
+public class StarPattern17 {
+
+	public static void main(String[] args) {
+		int n=4;
+		for(int i=0;i<n-1;i++) {
+			for(int j=0;j<=i;j++) {
+				System.out.print("* ");
+			}
+			for(int space=1;space<2*(n-1-i);space++) {
+				System.out.print("  ");
+			}
+			for(int k=0;k<=i;k++) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+		for(int i=1;i<(2*n);i++) {
+			System.out.print("* ");
+		}
+		System.out.println();
+		for(int i=0;i<n-1;i++) {
+			for(int j=n-1;j>i;j--) {
+				System.out.print("* ");
+			}
+			for(int space=0;space<=2*i;space++) {
+				System.out.print("  ");
+			}
+			for(int k=n-1;k>i;k--) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+*           * 
+* *       * * 
+* * *   * * * 
+* * * * * * * 
+* * *   * * * 
+* *       * * 
+*           *
+
+*/
+
diff --git a/Java/Star Patterns/StarPattern18.java b/Java/Star Patterns/StarPattern18.java
new file mode 100644
index 00000000..71b3ab74
--- /dev/null
+++ b/Java/Star Patterns/StarPattern18.java	
@@ -0,0 +1,41 @@
+public class StarPattern18 {
+
+	public static void main(String[] args) {
+		int n = 4;
+		for(int i=0;i<n;i++) {
+			for(int k=n-1;k>=i;k--) {
+				System.out.print(" ");
+			}
+			for(int j=0;j<=i;j++) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+		n=n-1;
+		for(int i=0;i<n;i++) {
+			System.out.print(" ");
+			for(int k=0;k<=i;k++) {
+				System.out.print(" ");
+			}
+			for(int j=n-1;j>=i;j--) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+    * 
+   * * 
+  * * * 
+ * * * * 
+  * * * 
+   * * 
+    * 
+
+*/
diff --git a/Java/Star Patterns/StarPattern19.java b/Java/Star Patterns/StarPattern19.java
new file mode 100644
index 00000000..52853617
--- /dev/null
+++ b/Java/Star Patterns/StarPattern19.java	
@@ -0,0 +1,35 @@
+public class StarPattern19 {
+
+	public static void main(String[] args) {
+		int n = 4;
+		for(int i=0;i<n;i++) {
+			for(int j=n;j>i;j--) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+		for(int i=1;i<n;i++) {
+			for(int k=0;k<=i;k++) {
+				System.out.print("* ");
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+* * * * 
+* * * 
+* * 
+* 
+* * 
+* * * 
+* * * * 
+
+
+*/
+
diff --git a/Java/Star Patterns/StarPattern20.java b/Java/Star Patterns/StarPattern20.java
new file mode 100644
index 00000000..759905c4
--- /dev/null
+++ b/Java/Star Patterns/StarPattern20.java	
@@ -0,0 +1,32 @@
+public class StarPattern20 {
+
+	public static void main(String[] args) {
+		int n=5;
+		for(int i=0;i<5;i++) {
+			for(int j=n-1;j>=i;j--) {
+				System.out.print(" ");
+			}
+			for(int k=0;k<=i;k++) {
+				if(i==0 || i==n-1 || k==0 || k==i) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+     * 
+    * * 
+   *   * 
+  *     * 
+ * * * * * 
+
+*/
diff --git a/Java/Star Patterns/StarPattern21.java b/Java/Star Patterns/StarPattern21.java
new file mode 100644
index 00000000..799d9515
--- /dev/null
+++ b/Java/Star Patterns/StarPattern21.java	
@@ -0,0 +1,33 @@
+public class StarPattern21 {
+
+	public static void main(String[] args) {
+		int n=5;
+		for(int i=0;i<n;i++) {
+			for(int j=0;j<=i;j++) {
+				System.out.print(" ");
+			}
+			for(int k=n-1;k>=i;k--) {
+				if(i==0 || i==n-1 || k==n-1 || k==i) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+ * * * * * 
+  *     * 
+   *   * 
+    * * 
+     * 
+ 
+
+*/
\ No newline at end of file
diff --git a/Java/Star Patterns/StarPattern22.java b/Java/Star Patterns/StarPattern22.java
new file mode 100644
index 00000000..e53a1dcc
--- /dev/null
+++ b/Java/Star Patterns/StarPattern22.java	
@@ -0,0 +1,52 @@
+public class StarPattern22 {
+
+	public static void main(String[] args) {
+		int n=4;
+		for(int i=0;i<n;i++) {
+			for(int j=0;j<=i;j++) {
+				System.out.print(" ");
+			}
+			for(int k=n-1;k>=i;k--) {
+				if(i==0 || k==n-1 || k==i) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+			}
+			System.out.println();
+		}
+		for(int i=1;i<n;i++) {
+			for(int j=n-1;j>=i;j--) {
+				System.out.print(" ");
+			}
+			for(int k=0;k<=i;k++) {
+				if(k==0 || k==i || i==n-1) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+				
+			}
+			System.out.println();
+		}
+
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+ * * * * 
+  *   * 
+   * * 
+    * 
+   * * 
+  *   * 
+ * * * * 
+ 
+ 
+*/
+
+
diff --git a/Java/Star Patterns/StarPattern23.java b/Java/Star Patterns/StarPattern23.java
new file mode 100644
index 00000000..2f11f743
--- /dev/null
+++ b/Java/Star Patterns/StarPattern23.java	
@@ -0,0 +1,50 @@
+public class StarPattern23 {
+
+	public static void main(String[] args) {
+		int n=4;
+		for(int i=0;i<n;i++) {
+			for(int j=n-1;j>=i;j--) {
+				System.out.print(" ");
+			}
+			for(int k=0;k<=i;k++) {
+				if(i==0 || k==0 || k==i) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+			}
+			System.out.println();
+		}
+		for(int i=1;i<n;i++) {
+			for(int j=0;j<=i;j++) {
+				System.out.print(" ");
+			}
+			for(int k=n-1;k>=i;k--) {
+				if(k==n-1 || k==i) {
+					System.out.print("* ");
+				} else {
+					System.out.print("  ");
+				}
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program.
+
+    * 
+   * * 
+  *   * 
+ *     * 
+  *   * 
+   * * 
+    * 
+ 
+ 
+*/
+
+

From b301c7802234bad08986036ee8ad39664dade5df Mon Sep 17 00:00:00 2001
From: Vijay <viijay1999@gmail.com>
Date: Fri, 13 Oct 2023 11:22:16 +0530
Subject: [PATCH 3/3] Add few more number pattern java programs

---
 Java/Number Patterns/NumberPattern13.java | 54 +++++++++++++++++++++++
 Java/Number Patterns/NumberPattern14.java | 41 +++++++++++++++++
 Java/Number Patterns/NumberPattern15.java | 30 +++++++++++++
 Java/Number Patterns/NumberPattern16.java | 45 +++++++++++++++++++
 4 files changed, 170 insertions(+)
 create mode 100644 Java/Number Patterns/NumberPattern13.java
 create mode 100644 Java/Number Patterns/NumberPattern14.java
 create mode 100644 Java/Number Patterns/NumberPattern15.java
 create mode 100644 Java/Number Patterns/NumberPattern16.java

diff --git a/Java/Number Patterns/NumberPattern13.java b/Java/Number Patterns/NumberPattern13.java
new file mode 100644
index 00000000..8af20328
--- /dev/null
+++ b/Java/Number Patterns/NumberPattern13.java	
@@ -0,0 +1,54 @@
+public class NumberPattern13 {
+
+	public static void main(String[] args) {
+		int n=6,sum=0;
+		for(int i=0;i<n;i++) {
+			if(i%2==0) sum = 0;
+			for(int j=0;j<=i;j++) {
+				sum = Math.abs(sum - 1);
+				System.out.print(sum+" ");
+			}
+			System.out.println();
+		}
+	}
+}
+
+// Another method to solve this
+
+/* 
+
+public class NumberPattern13 {
+
+	public static void main(String[] args) {
+		int n=6;
+		for(int i=0;i<n;i++) {
+			for(int j=0;j<=i;j++) {
+				if((i+j) % 2 == 0) {
+					System.out.print(1+" ");
+				}
+				else {
+					System.out.print(0+" ");
+				}
+			}
+			System.out.println();
+		}
+	}
+} 
+
+*/
+
+/* 
+
+The output for the above program
+
+1 
+0 1 
+1 0 1 
+0 1 0 1 
+1 0 1 0 1 
+0 1 0 1 0 1 
+
+
+*/
+
+
diff --git a/Java/Number Patterns/NumberPattern14.java b/Java/Number Patterns/NumberPattern14.java
new file mode 100644
index 00000000..c2236127
--- /dev/null
+++ b/Java/Number Patterns/NumberPattern14.java	
@@ -0,0 +1,41 @@
+public class NumberPattern14 {
+
+	public static void main(String[] args) {
+		int n = 4;
+		int i, j;
+		  
+        // outer loop to handle number of rows
+        for (i = 1; i <= n; i++) {
+            // inner loop to print the spaces
+            for (j = 1; j <= 2 * (n - i); j++) {
+                System.out.print(" ");
+            }
+  
+            // inner loop to print the first part
+            for (j = i; j >= 1; j--) {
+                System.out.print(j + " ");
+            }
+  
+            // inner loop to print the second part
+            for (j = 2; j <= i; j++) {
+                System.out.print(j + " ");
+            }
+  
+            // printing new line for each row
+            System.out.println();
+        }
+    }
+}
+
+/* 
+
+The output for the above program
+
+      1 
+    2 1 2 
+  3 2 1 2 3 
+4 3 2 1 2 3 4 
+
+*/
+
+
diff --git a/Java/Number Patterns/NumberPattern15.java b/Java/Number Patterns/NumberPattern15.java
new file mode 100644
index 00000000..95c5bb2c
--- /dev/null
+++ b/Java/Number Patterns/NumberPattern15.java	
@@ -0,0 +1,30 @@
+public class NumberPattern15 {
+
+	public static void main(String[] args) {
+		int n=4;
+		for(int i=0;i<n;i++) {
+			int count = i+1;
+			for(int j=0;j<=i;j++) {
+				System.out.print(" ");
+			}
+			for(int k=n-1;k>=i;k--) {
+				System.out.print(count+" ");
+				count++;
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program
+
+ 1 2 3 4 
+  2 3 4 
+   3 4 
+    4 
+
+*/
+
diff --git a/Java/Number Patterns/NumberPattern16.java b/Java/Number Patterns/NumberPattern16.java
new file mode 100644
index 00000000..c7fe8fa1
--- /dev/null
+++ b/Java/Number Patterns/NumberPattern16.java	
@@ -0,0 +1,45 @@
+public class NumberPattern16 {
+
+	public static void main(String[] args) {
+		int n=4;
+		for(int i=0;i<n;i++) {
+			int count = i+1;
+			for(int j=0;j<=i;j++) {
+				System.out.print(" ");
+			}
+			for(int k=n-1;k>=i;k--) {
+				System.out.print(count+" ");
+				count++;
+			}
+			System.out.println();
+		}
+		for(int i=1;i<n;i++) {
+			int count = n-i;
+			for(int j=n-1;j>=i;j--) {
+				System.out.print(" ");
+			}
+			for(int k=0;k<=i;k++) {
+				System.out.print(count+" ");
+				count++;
+			}
+			System.out.println();
+		}
+	}
+
+}
+
+/* 
+
+The output for the above program
+
+ 1 2 3 4 
+  2 3 4 
+   3 4 
+    4 
+   3 4 
+  2 3 4 
+ 1 2 3 4
+
+*/
+
+