Merge pull request PrajaktaSathe#142 from srijanishere/main

Check for Lucky Number in Java

Author: PrajaktaSathe

Programs/LuckyNumber.java

@@ -0,0 +1,41 @@
+//Program to check if the given number is a lucky number or not
+
+import java.util.*;
+public class LuckyNumber
+{
+    int c = 2;
+
+    //Method to check if the number is a Lucky Number
+    public boolean checkLucky(int n)
+    {
+        if(c > n)
+            return true;
+        if(n % c == 0)
+            return false;
+        
+        //Position of the element
+            n = n - (n/c);
+        
+        //Incrementing the counter variable
+        c++;
+        return checkLucky(n);
+    }
+
+    //Main method
+    public static void main(String[] args)
+    {
+        Scanner sc = new Scanner(System.in);
+        System.out.println("Enter the number to be checked : ");
+        int a = sc.nextInt();
+        LuckyNumber ob = new LuckyNumber();
+        boolean res = ob.checkLucky(a);
+        if(res == true)
+        {
+            System.out.println(a+" is a Lucky Number");
+        }
+        else
+        {
+            System.out.println(a+" is NOT a Lucky Number");
+        }
+    }
+}