diff --git a/DS & Algo in Java/Patterns.java b/DS & Algo in Java/Patterns.java
new file mode 100644
index 00000000..4b854e44
--- /dev/null
+++ b/DS & Algo in Java/Patterns.java	
@@ -0,0 +1,328 @@
+/* package codechef; // don't place package name! */
+
+import java.util.*;
+import java.lang.*;
+import java.io.*;
+
+/* Name of the class has to be "Main" only if the class is public. */
+class Codechef
+{
+  /*
+  * * * * 
+  * * * * 
+  * * * * 
+  * * * * 
+  * * * * 
+  */
+    private static void rectanglePattern(int rows, int cols){
+        for(int i=0;i<rows;i++){
+            for(int j=0;j<cols;j++)
+                System.out.print("* ");
+            System.out.println();
+        }
+    }
+  
+  /*
+  ****
+  *  *
+  *  *
+  *  *
+  ****
+  */
+    private static void hollowRectanglePattern(int rows, int cols){
+        for(int i=0;i<rows;i++){
+            for(int j=0;j<cols;j++){
+                if(i==0 || i==(rows-1) || j==0 || j==(cols-1)){
+                    System.out.print("*");
+                }else{
+                    System.out.print(" ");
+                }
+            }
+            System.out.println();
+        }
+    }
+  /*
+    *****
+    ****
+    ***
+    **
+    *
+  */
+    private static void invertedHalfPyramid(int n){
+        for(int i=n;i>0;i--){
+            for(int j=i;j>0;j--){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+    }
+  
+  /*
+      *
+     **
+    ***
+   ****
+  *****
+
+  */
+    private static void halfPyramid(int n){
+        for(int i=1;i<=n;i++){
+            for(int j=1;j<=n;j++){
+                if(j<=n-i)
+                    System.out.print(" ");
+                else
+                    System.out.print("*");
+            }
+            System.out.println();
+        }
+    }
+ 
+  /*
+  1
+  22
+  333
+  4444
+  55555
+  */
+    private static void halfPyramidNumber(int n){
+        for(int i=1;i<=n;i++){
+            for(int j=1;j<=i;j++){
+                System.out.print(i);
+            }
+            System.out.println();
+        }
+    }
+  
+  /*
+  1 
+  2 3 
+  4 5 6 
+  7 8 9 10 
+  11 12 13 14 15
+  */
+    private static void floydTriangle(int n){
+        int count=1;
+        for(int i=1;i<=n;i++){
+            for(int j=1;j<=i;j++){
+                System.out.print(count + " ");
+                count++;
+            }
+            System.out.println();
+        }
+    }
+  
+  /*
+  
+  *      *
+  **    **
+  ***  ***
+  ********
+  ********
+  ***  ***
+  **    **
+  *      *
+
+  */
+    private static void butterfly(int n){
+        for(int i=1;i<=n;i++){
+            for(int j=1;j<=i;j++){
+                System.out.print("*");
+            }
+            int spaces = 2*n-2*i;
+            for(int j=1;j<=spaces;j++){
+                System.out.print(" ");
+            }
+            for(int j=1;j<=i;j++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+        for(int i=n;i>=1;i--){
+            for(int j=1;j<=i;j++){
+                System.out.print("*");
+            }
+            int spaces = 2*n-2*i;
+            for(int j=1;j<=spaces;j++){
+                System.out.print(" ");
+            }
+            for(int j=1;j<=i;j++){
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+    }
+	/*
+		1 2 3 4 5 
+		1 2 3 4 
+		1 2 3 
+		1 2 
+		1 
+	*/
+	private static void invertedPattern(int n){
+		for(int i=1;i<=n;i++){
+		    for(int j=1;j<=(n-i)+1;j++){
+			System.out.print(j+" ");
+		    }
+		    System.out.println();
+		}
+    	}
+	
+	/*
+		1 
+		0 1 
+		1 0 1 
+		0 1 0 1 
+		1 0 1 0 1 
+	*/
+	private static void zeroOnePattern(int n){
+		for(int i=1;i<=n;i++){
+		    for(int j=1;j<=i;j++){
+			if((i+j)%2==0)
+			    System.out.print("1 ");
+			else
+			    System.out.print("0 ");
+		    }
+		    System.out.println();
+		}
+    	}
+	
+	/*
+		    * * * * * 
+		   * * * * * 
+		  * * * * * 
+		 * * * * * 
+		* * * * * 
+	*/
+	private static void rhombusPattern(int n){
+		for(int i=1;i<=n;i++){
+		    for(int j=1;j<=n-i;j++)
+			System.out.print(" ");
+		    for(int j=1;j<=n;j++){
+			System.out.print("* ");
+		    }
+		    System.out.println();
+		}
+    	}
+	
+	/*
+	    1 
+	   1 2 
+	  1 2 3 
+	 1 2 3 4 
+	1 2 3 4 5 
+	
+	*/
+	private static void numberPattern(int n){
+		for(int i=1;i<=n;i++){
+		    for(int j=1;j<=n-i;j++)
+			System.out.print(" ");
+		    for(int j=1;j<=i;j++)
+			System.out.print(j + " ");
+		    System.out.println();
+		}
+    	}
+	
+	/*
+	        1 
+	      2 1 2 
+	    3 2 1 2 3 
+	  4 3 2 1 2 3 4 
+	5 4 3 2 1 2 3 4 5 
+
+	*/
+	private static void palindromicPattern(int n){
+		/*for(int i=1;i<=n;i++){
+		    for(int j=1;j<=n-i;j++)
+			System.out.print(" ");
+
+		    for(int j=i;j>=1;j--)
+			System.out.print(j);
+
+		    for(int j=2;j<=i;j++){
+			System.out.print(j);
+		    }
+
+		    System.out.println();
+		}*/
+		for(int i=1;i<=n;i++){
+		    int j;
+		    for(j=1;j<=n-i;j++){
+			System.out.print("  ");
+		    }
+		    int k=i;
+		    for(;j<=n;j++){
+			System.out.print(k--);
+			System.out.print(" ");
+		    }
+		    k=2;
+		    for(;j<=n+i-1;j++){
+			System.out.print(k++);
+			System.out.print(" ");
+		    }
+		    System.out.println();
+		}
+    	}
+	
+	/*
+	   *
+	  ***
+	 *****
+	*******
+	*******
+	 *****
+	  ***
+	   *
+
+	*/
+	private static void starPattern(int n){
+		for(int i=1;i<=n;i++){
+		    for(int j=1;j<=n-i;j++)
+			System.out.print(" ");
+		    for(int j=1;j<=(2*i)-1;j++)
+			System.out.print("*");
+		    System.out.println();
+		}
+		for(int i=n;i>=1;i--){
+		    for(int j=1;j<=n-i;j++)
+			System.out.print(" ");
+		    for(int j=1;j<=(2*i)-1;j++)
+			System.out.print("*");
+		    System.out.println();
+		}
+    	}
+	
+	/*
+		    *       *       *     
+		  *   *   *   *   *   *   
+		*       *       *       * 
+	*/
+	private static void zigZagPattern(int n){
+		for(int i=1;i<=3;i++){
+		    for(int j=1;j<=n;j++){
+			if((i+j)%4==0 || (i==2 && j%4==0))
+			    System.out.print("* ");
+			else
+			    System.out.print("  ");
+		    }
+		    System.out.println();
+		}
+    	}
+	public static void main (String[] args) throws java.lang.Exception
+	{
+		/*int rows = 5, cols=4;
+		hollowRectanglePattern(rows,cols);*/
+		int n=5;
+		//invertedHalfPyramid(n);
+		//halfPyramid(n);
+		//halfPyramidNumber(n);
+		//floydTriangle(n);
+		//butterfly(4);
+		//invertedPattern(5);
+		//zeroOnePattern(5);
+		//rhombusPattern(5);
+		//numberPattern(5);
+		//palindromicPattern(5);
+		//starPattern(4);
+		zigZagPattern(13);
+	}
+}
diff --git a/js/generate-table-node/package-lock.json b/js/generate-table-node/package-lock.json
index 12da6380..29111974 100644
--- a/js/generate-table-node/package-lock.json
+++ b/js/generate-table-node/package-lock.json
@@ -1412,9 +1412,9 @@
       }
     },
     "minimist": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+      "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q=="
     },
     "ms": {
       "version": "2.1.2",