## Factorial of a Number in PHP

Write a program to calculate factorial of a number in PHP. In this tutorial, We are going to write a PHP code to find factorial of a number using iterative as well as recursive approach. Before solving this problem let’s understand what is factorial.

Program to Print Factorial of a Number in PHP

## PHP Code to Check Whether a Number is Palindrome or Not

Write a PHP code to check whether a number is palindrome or not. In this tutorial, we are going to write a PHP program to check whether an input number is palindrome or not.

## Java Program to Print Fibonacci Series upto N Number

Write a java program to print Fibonacci series up to N number, where N is the input integer. In this tutorial, We are going to write a java code to print fibonacci series.

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## Program to Print 1 to 100 Numbers without using Loop

Write a program to print 1 to 100 numbers without using loop. Using loop, (for and while loop) we can easily solve this problem. Think for a moment how do you solve this problem without using a loop. We can solve this problem using recursion.

## C Program to Print Fibonacci Series using Recursion

Write a C program to print Fibonacci Series using recursion. Given an input number, we have to write a code to print Fibonacci series up to that number using Recursion.

This question is very important in terms of technical interviews.

You can check my previous post for PHP script to print Fibonacci series. Before solving this problem, Let’s first understand what is Recursion?

## What is Recursion?

In recursion, A function calls itself until the base condition is reached. Recursive code is much cleaner and shorter as compared to iterative code.
For better understanding you can check my previous post on recursion and what’s the difference between recursion and iteration.

For better understanding of  recursion concept, you can solve Objective Question on Recursion.