docs: update the whole repository

* fix some bugs
* delete duplicate files
* format code

Others/CountWords.java

@@ -0,0 +1,28 @@
+package Others;
+
+import java.util.Scanner;
+
+/**
+ * You enter a string into this program, and it will return how many words were
+ * in that particular string
+ *
+ * @author Marcus
+ */
+public class CountWords {
+
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your text: ");
+        String str = input.nextLine();
+
+        System.out.println("Your text has " + wordCount(str) + " word(s)");
+        input.close();
+    }
+
+    private static int wordCount(String s) {
+        if (s == null || s.isEmpty())
+            return 0;
+        return s.trim().split("[\\s]+").length;
+    }
+
+}