Naresh 3

naresh/src/main/java/com/lftechnology/phpjava/assignmentthree/EvenFibonacci.java

@@ -0,0 +1,50 @@
+package com.lftechnology.phpjava.assignmentthree;
+
+import com.lftechnology.phpjava.menu.MenuReader;
+import com.lftechnology.phpjava.menu.ProgramMenu;
+
+import java.util.Scanner;
+
+/**
+ * Created by naresh on 5/16/16.
+ */
+public class EvenFibonacci implements MenuReader {
+    /**
+     * read the user input for the action
+     */
+    @Override
+    public void scanner() {
+
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter the max value.");
+        String maxValue = scan.nextLine();
+        int max = Integer.valueOf(maxValue);
+        int counter = 0;
+        int sum = 0;
+        int a, b, c;
+        a = 1;
+        b = 2;
+
+        while (counter < max) {
+            c = a + b;
+            a = b;
+            b = c;
+            counter = b;
+            if (counter > max) {
+                break;
+            }
+            if (counter % 2 == 0) {
+                sum = sum + counter;
+            }
+        }
+        System.out.println("Sum of fibonacci numbers is :" + sum);
+        System.out.println("\n\n\nPlease press any key to return the previous menu or enter 0 to exit.\n");
+
+        String input = scan.nextLine();
+        if (input.equals("0")) {
+            ProgramMenu.run(0);
+        } else {
+            ProgramMenu.showMenu();
+        }
+    }
+}

naresh/src/main/java/com/lftechnology/phpjava/assignmentthree/LargestPalindrome.java

@@ -0,0 +1,78 @@
+package com.lftechnology.phpjava.assignmentthree;
+
+
+import com.lftechnology.phpjava.menu.MenuReader;
+import com.lftechnology.phpjava.menu.ProgramMenu;
+
+import java.util.Scanner;
+
+/**
+ * @author Naresh Maharjan <nareshmaharjan@lftechnology.com>
+ */
+public class LargestPalindrome implements MenuReader {
+
+    /**
+     * find the largest palindrome number
+     *
+     * @param startIndex
+     * @param endIndex
+     * @return
+     * @author Naresh Maharjan <nareshmaharjan@lftechnology.com>
+     */
+    public long findLargestPalindrome(int startIndex, int endIndex) {
+        long palindrome = 0;
+        int max = Math.max(startIndex, endIndex);
+        int min = Math.min(startIndex, endIndex);
+        for (int i = max; i >= min; i--) {
+            for (int j = max; j >= min; j--) {
+                long product = i * j;
+                if (palindrome < product && isPalindrome(product)) {
+                    palindrome = product;
+                }
+            }
+        }
+        return palindrome;
+    }
+
+    /**
+     * check if the number is palindrome or not
+     *
+     * @param nr
+     * @return
+     * @author Naresh Maharjan <nareshmaharjan@lftechnology.com>
+     */
+    public boolean isPalindrome(long nr) {
+        long rev = 0;                    // the reversed number
+        long x = nr;                     // store the default value (it will be changed)
+        while (x > 0) {
+            rev = 10 * rev + x % 10;
+            x /= 10;
+        }
+        return nr == rev;               // returns true if the number is palindrome
+    }
+
+    /**
+     * read the user input for the action
+     */
+    @Override
+    public void scanner() {
+        System.out.println("Please enter two numbers to find out the largest palindrome possible from the its product.");
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter first number ");
+        String firstNumber = scan.nextLine();
+        System.out.println("Please enter second number ");
+        String secondNumber = scan.nextLine();
+
+        long palindrome = this.findLargestPalindrome(Integer.valueOf(firstNumber), Integer.valueOf(secondNumber));
+        System.out.println("Largest possible palindrome from the product of " + firstNumber + " and " + secondNumber + " is = " + palindrome);
+
+        System.out.println("\n\n\nPlease press any key to return the previous menu or enter 0 to exit.\n");
+
+        String input = scan.nextLine();
+        if (input.equals("0")) {
+            ProgramMenu.run(0);
+        } else {
+            ProgramMenu.showMenu();
+        }
+    }
+}

naresh/src/main/java/com/lftechnology/phpjava/assignmenttwo/MutiplierChecker.java

@@ -0,0 +1,56 @@
+package com.lftechnology.phpjava.assignmenttwo;
+
+import com.lftechnology.phpjava.menu.MenuReader;
+import com.lftechnology.phpjava.menu.ProgramMenu;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+/**
+ * Created by naresh on 5/12/16.
+ */
+public class MutiplierChecker implements MenuReader {
+
+    /**
+     * read the user input for the action
+     */
+    @Override
+    public void scanner() {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter the max value.");
+        String maxValue = scan.nextLine();
+
+        System.out.println("Please enter first number ");
+        String firstNumber = scan.nextLine();
+        System.out.println("Please enter second number ");
+        String secondNumber = scan.nextLine();
+
+        int result = this.multiplier(Integer.valueOf(maxValue), Integer.valueOf(firstNumber), Integer.valueOf(secondNumber));
+        System.out.println("Sum of numbers below " + maxValue + " which are multiple of " + firstNumber + " and " + secondNumber + " is = " + result);
+
+        System.out.println("\n\n\nPlease press any key to return the previous menu or enter 0 to exit.\n");
+
+        String input = scan.nextLine();
+        if (input.equals("0")) {
+            ProgramMenu.run(0);
+        } else {
+            ProgramMenu.showMenu();
+        }
+    }
+
+    /**
+     * @param maxValue
+     * @param firstNumber
+     * @param secondNumber
+     */
+    public int multiplier(int maxValue, int firstNumber, int secondNumber) {
+        int sum = 0;
+        for (int i = 0; i < maxValue; i++) {
+            if (i % firstNumber == 0 || i % secondNumber == 0) {
+                sum += i;
+            }
+        }
+        return sum;
+    }
+}

naresh/src/main/java/com/lftechnology/phpjava/assignmenttwo/SalutationSplitter.java

@@ -1,21 +1,45 @@
 package com.lftechnology.phpjava.assignmenttwo;
 
+import com.lftechnology.phpjava.menu.MenuReader;
+import com.lftechnology.phpjava.menu.ProgramMenu;
+
+import java.util.Scanner;
+
 /**
  * @author Naresh Maharjan <nareshmaharjan@lftechnology.com>
  */
-public class SalutationSplitter {
-    public static String name = "";
-    public static String salutaion = "";
-
-    public static void main(String[] args) {
-        for (int i = 0; i < args.length; i++) {
-            if (i == 0) {
-                name = args[0];
-            } else {
-                salutaion = salutaion + " " + args[i];
+public class SalutationSplitter implements MenuReader {
+    public void salutationSplitter(String input) {
+        String name = "";
+        String[] nameAndSalutation = input.split(" ");
+        String salutaion = nameAndSalutation[0];
+        String space = "";
+        for (int i = 0; i < nameAndSalutation.length; i++) {
+            if (i > 0) {
+                name += space + nameAndSalutation[i];
+                space = " ";
             }
         }
-        System.out.println(name);
-        System.out.println(salutaion);
+        System.out.println("\n\nSalutation : " + salutaion);
+        System.out.println("Name : " + name);
+    }
+
+
+    /**
+     * read the user input for the action
+     */
+    @Override
+    public void scanner() {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter the name and salutation.");
+        String nameAndSalutation = scan.nextLine();
+        salutationSplitter(nameAndSalutation);
+        System.out.println("\n\n\nPlease press any key to return the previous menu or enter 0 to exit. \n");
+        String input = scan.nextLine();
+        if (input.equals("0")) {
+            ProgramMenu.run(0);
+        } else {
+            ProgramMenu.showMenu();
+        }
     }
 }

naresh/src/main/java/com/lftechnology/phpjava/menu/MenuReader.java

@@ -0,0 +1,12 @@
+package com.lftechnology.phpjava.menu;
+
+/**
+ * Created by naresh on 5/16/16.
+ */
+public interface MenuReader {
+
+    /**
+     * read the user input for the action
+     */
+    void scanner();
+}

naresh/src/main/java/com/lftechnology/phpjava/menu/ProgramMenu.java

@@ -0,0 +1,71 @@
+package com.lftechnology.phpjava.menu;
+
+import com.lftechnology.phpjava.assignmentthree.EvenFibonacci;
+import com.lftechnology.phpjava.assignmentthree.LargestPalindrome;
+import com.lftechnology.phpjava.assignmenttwo.MutiplierChecker;
+import com.lftechnology.phpjava.assignmenttwo.SalutationSplitter;
+
+import java.util.Scanner;
+
+/**
+ * Created by naresh on 5/16/16.
+ */
+public class ProgramMenu {
+    public static String[] menu = {
+            "1. Split Salutation",
+            "2. Check Multiple",
+            "3. Find Largest Palindrome",
+            "4. Even Fibonacci",
+            "0. To Exit",
+    };
+
+    public static void main(String[] args) {
+        showMenu();
+    }
+
+    public static void showMenu() {
+        System.out.println("Please enter the option number");
+        Scanner scan = new Scanner(System.in);
+        for (String option : menu) {
+            System.out.println(option);
+        }
+        int index = scan.nextInt();
+        run(index);
+    }
+
+    public static void run(int index) {
+        switch (index) {
+            case 1:
+                SalutationSplitter salutationSplitter = new SalutationSplitter();
+                salutationSplitter.scanner();
+                break;
+            case 2:
+                MutiplierChecker mutiplierChecker = new MutiplierChecker();
+                mutiplierChecker.scanner();
+                break;
+            case 3:
+                LargestPalindrome largestPalindrome = new LargestPalindrome();
+                largestPalindrome.scanner();
+                break;
+            case 4:
+                EvenFibonacci evenFibonacci = new EvenFibonacci();
+                evenFibonacci.scanner();
+                break;
+            case 0:
+                System.out.println("Tata Horn OK please. :)");
+                System.exit(0);
+            default:
+                System.out.println("Invalid option. Please enter the number mentioned in the menu.");
+                Scanner scan = new Scanner(System.in);
+                System.out.println("Please press any key to return the previous menu or enter 0 to exit");
+                String input = scan.nextLine();
+                if (input.equals("0")) {
+                    System.exit(0);
+                } else {
+                    showMenu();
+                }
+                break;
+
+        }
+    }
+}