Add Day 03 medium level number programs

Author: curious-vasavi

src/number_Programming/core/day_01/FibonacciSeries.java

@@ -1,7 +1,7 @@
 package number_Programming.core.day_01;
 import java.util.Scanner;
 //12.write a program to produce the fibonacci series
-public class FibonacciSeires
+public class FibonacciSeries
 {
 	public static void main(String[] args) {
 		Scanner sc = new Scanner(System.in);

src/number_Programming/medium/day_03/FactorialOddDigits.java

@@ -0,0 +1,35 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class FactorialOddDigits 
+{
+	public static int factorial(int num)
+	{
+		int fact = 1;
+		for(int i = 1;i<=num;i++)
+		{
+			fact = fact* i;
+		}
+		return fact;
+	}
+	public static void odd(int num)
+	{
+		while(num > 0)
+		{
+			int ld = num % 10;
+			if(ld % 2 != 0)
+			{
+				System.out.println(factorial(ld));
+			}
+			num = num /10;
+		}
+	}
+    public static void main(String[] args)
+    {
+    	Scanner sc = new Scanner(System.in);
+    	System.out.println("Enter a number:");
+    	int num = sc.nextInt();
+    	odd(num);
+    	sc.close();	
+    }
+}
+

src/number_Programming/medium/day_03/FactorialOfEachDigit.java

@@ -0,0 +1,27 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class FactorialOfEachDigit 
+{
+	public static void factorial(int num)
+	{
+		while(num>0)
+		{
+			int ld = num % 10;
+			int fact = 1;
+
+			for(int i = 1;i<=ld;i++)
+			{
+				fact = fact * i;
+			}
+			System.out.println("The factorial of the " + ld + " is " + fact);
+			num = num/10;
+		}
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number :");
+		int num = sc.nextInt();
+		factorial(num);
+		sc.close();
+	}
+}

src/number_Programming/medium/day_03/FactorialOfEvenDigit.java

@@ -0,0 +1,40 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+//print factorial of even digit in the number
+public class FactorialOfEvenDigit 
+{
+	public static int factorial(int num)
+	{
+		int fact = 1;
+		for(int i = 1;i<=num;i++)
+		{
+			fact = fact * i;
+		}
+		return fact;
+	}
+	public static void even(int num)
+	{
+		if(num == 0)
+		{
+			System.out.println(factorial(0));
+			return ;
+		}
+		
+		while(num>0)
+		{
+			int ld = num % 10;
+			if(ld % 2 == 0)
+			{
+				System.out.println(factorial(ld));;
+			}
+			num = num / 10;
+		}
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+//		System.out.println("Enter a number : ");
+		int num = sc.nextInt();
+		even(num);
+		sc.close();
+	}
+}

src/number_Programming/medium/day_03/OddDigits.java

@@ -0,0 +1,25 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class OddDigits
+{
+	public static void odd(int num)
+	{
+		System.out.println("The odd digits in the given number are :");
+		while(num>0)
+		{
+			int ld = num % 10;
+			if(ld % 2 != 0)
+			{
+				System.out.println(ld);
+			}
+			num = num/10;
+		}
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number : ");
+		int num = sc.nextInt();
+		odd(num);
+		sc.close();
+	}
+}

src/number_Programming/medium/day_03/ProductOfDigits.java

@@ -0,0 +1,23 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class ProductOfDigits 
+{
+	public static void product(int num)
+	{
+		int product = 1;
+		while(num > 0)
+		{
+			int ld = num % 10;
+			product = product * ld;
+			num = num / 10;
+		}
+		System.out.println("The product of the digits present in the given number is : " + product);
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number :");
+		int num = sc.nextInt();
+		product(num);
+		sc.close();
+	}
+}

src/number_Programming/medium/day_03/ProductOfPrimeDigits.java

@@ -0,0 +1,41 @@
+package number_Programming.medium.day_03;
+import java.util.Scanner;
+public class ProductOfPrimeDigits 
+{
+	public static void productOfPrime(int num)
+	{
+		int temp = num;
+		int product = 1;
+		boolean isPrime = false;
+		while(num > 0)
+		{
+			int ld  = num % 10;
+			int count = 0;
+			for(int i = 1;i<=ld;i++)
+			{
+				if(ld % i == 0)
+				{
+					count++;
+				}
+			}
+			if(count == 2)
+			{
+				product = product * ld;
+				isPrime = true;
+			}
+			num = num / 10;
+		}
+		if(isPrime)
+			System.out.println("The product of prime digits in " + temp+ " is " + product);
+		else
+			System.out.println("No prime digit present in the "+ temp);
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number :");
+		int num = sc.nextInt();
+		productOfPrime(num);
+		sc.close();
+	}
+
+}

src/number_Programming/medium/day_03/SumOfDigits.java

@@ -0,0 +1,24 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class SumOfDigits
+{
+	public static void sum(int num)
+	{
+		int sum = 0;
+		while(num>0)
+		{
+			int ld = num % 10;
+			sum = sum + ld;
+			num = num / 10;
+		}
+		System.out.println("The sum of the digits present in the number is " + sum);
+//		return sum;
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number :");
+		int num = sc.nextInt();
+		sum(num);
+		sc.close();
+	}
+}

src/number_Programming/medium/day_03/SumOfEvenDigits.java

@@ -0,0 +1,31 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class SumOfEvenDigits 
+{
+	public static void sumOfEven(int num)
+	{
+		int sum = 0;
+		boolean hasEven = false;
+		while(num > 0)
+		{
+			int ld = num % 10;
+			if(ld % 2 == 0)
+			{
+				sum = sum + ld;
+				hasEven = true;
+			}	
+			num = num/10;
+		}
+		if(hasEven)
+			System.out.println("The sum of the even digits is " + sum);
+		else
+			System.out.println("No even digits present in the number");
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number:");
+		int num = sc.nextInt();
+		sumOfEven(num);
+		sc.close();	
+	}
+}

src/number_Programming/medium/day_03/SumOfFactorialEachDigit.java

@@ -0,0 +1,37 @@
+package number_Programming.medium.day_03;
+import java.util.*;
+public class SumOfFactorialEachDigit 
+{
+	public static int factorial(int num)
+	{
+		int fact = 1;
+		for(int i = 1;i<=num;i++)
+		{
+			fact = fact * i;
+		}
+		return fact;
+	}
+	public static int sum(int num)
+	{
+		int sum = 0;
+		while(num > 0)
+		{
+			int ld = num%10;
+			sum = sum+factorial(ld);
+			num = num/10;
+		}
+		return sum;
+	}
+	public static void displayResult(int num,int sum)
+	{
+		System.out.println("The sum of the factorial of "+ num + " is " + sum);
+	}
+	public static void main(String[] args) {
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter a number : ");
+		int num = sc.nextInt();
+		int result = sum(num);
+		displayResult(num, result);
+		sc.close();
+	}
+}