Muarachmann patch 1

CharacterInsertion.java

@@ -0,0 +1,85 @@
+package com.company;
+
+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+            String  word;
+            int n;
+            String choice;
+            char temp;  //  variable to temporary store the
+
+            Scanner input = new Scanner(System.in);
+            System.out.println("This program is to insert an asterisk(*) at the position indexed by the user in a particular string. ");
+
+            System.out.println("Enter a string:");
+            word = input.next();
+            System.out.println("Enter the index(integer):");
+            n = input.nextInt();
+
+                // Changing the character with an * using the charAt method to locate
+                // the character at that particular location
+
+            temp = '*';
+
+            // strings are immutable thus we store each character of the string in an array so as to
+            // the individual characters
+
+           char[] stringArray = new char[word.length()];
+
+           for (int i=0 ; i < stringArray.length ; i++){
+
+               stringArray[i] = word.charAt(i);
+
+                    if(i == n-1){
+                        stringArray[i] = temp;
+                    }
+           }
+
+           // reconverting array back to a string and storing it in the variable word.
+
+            word = new String(stringArray);
+            System.out.println(word);
+
+             // /*********************************************************/
+            //        EXTRA: Replacing a * at every index that is even   /
+           //  *********************************************************/
+            System.out.println("Press yes or no to continue the program.");
+            choice = input.next();
+
+            switch (choice) {
+
+                case "yes": {
+                    System.out.println("\tThanks for continuing to use the program");
+                    System.out.println("\tThe program replaces an asterisk in every even index ;).");
+                    System.out.println("Enter a string:");
+                    word = input.next();
+
+                    char[] newStringArray = new char[word.length()];
+
+                    for (int i = 0; i < newStringArray.length; i++) {
+
+                        newStringArray[i] = word.charAt(i);
+                        if (i % 2 == 0) {
+                            newStringArray[i] = temp;
+                        }
+                    }
+                    word = new String(newStringArray);
+                    System.out.println(word);
+
+                    break;
+                }
+
+                case "no":{
+                    System.out.println("Oops thanks for using the program. ;).");
+                    break;
+                }
+
+                default:
+                    System.out.println("Your request is invalid!\nThanks for using the Program");
+                    break;
+            }
+
+    }
+}