docs: update the whole repository

* fix some bugs
* delete duplicate files
* format code

Others/Factorial.java

@@ -1,49 +1,50 @@
+package Others;
+
 import java.util.Scanner;
 
 /**
  * This program will print out the factorial of any non-negative
  * number that you input into it.
- * 
- * @author Marcus
  *
+ * @author Marcus
  */
-public class Factorial{
+public class Factorial {
 
-	/**
-	 * The main method
-	 * 
-	 * @param args Command line arguments
-	 */
-	public static void main(String[] args){
-	  Scanner input = new Scanner(System.in);
-          System.out.print("Enter a non-negative integer: ");
-          
-       //If user does not enter an Integer, we want program to fail gracefully, letting the user know why it terminated   
-          try{
+    /**
+     * The main method
+     *
+     * @param args Command line arguments
+     */
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+        System.out.print("Enter a non-negative integer: ");
+
+        //If user does not enter an Integer, we want program to fail gracefully, letting the user know why it terminated
+        try {
             int number = input.nextInt();
-            
-       //We keep prompting the user until they enter a positive number 
-            while(number < 0){
-              System.out.println("Your input must be non-negative. Please enter a positive number: ");
-              number = input.nextInt();
+
+            //We keep prompting the user until they enter a positive number
+            while (number < 0) {
+                System.out.println("Your input must be non-negative. Please enter a positive number: ");
+                number = input.nextInt();
             }
-       //Display the result
- 	   System.out.println("The factorial of " + number + " will yield: " + factorial(number));  
-           
-          }catch(Exception e){
+            //Display the result
+            System.out.println("The factorial of " + number + " will yield: " + factorial(number));
+
+        } catch (Exception e) {
             System.out.println("Error: You did not enter an integer. Program has terminated.");
-          }
-          input.close();
         }
-        
-	/**
-	 * Recursive Factorial Method
-	 * 
-	 * @param n The number to factorial
-	 * @return The factorial of the number
-	 */
-	public static long factorial(int n){
-          if(n == 0 || n == 1) return 1;
-          return n * factorial(n - 1);
-	}
+        input.close();
+    }
+
+    /**
+     * Recursive Factorial Method
+     *
+     * @param n The number to factorial
+     * @return The factorial of the number
+     */
+    public static long factorial(int n) {
+        if (n == 0 || n == 1) return 1;
+        return n * factorial(n - 1);
+    }
 }