Hassan Codes

INTRODUCTION   Imagine you have money, you put the money in a wallet. It is like putting data in a variable. Now if you have a lot of wallets (definitely not stolen), and you put them all in a bag. That will be like putting all variables in another variable. That is exactly what Arrays are, variable of variables ARRAYS   In array the all the data you store must have same datatype. Here is the magical spell to create an array:                 int[] numbers = new int[5];    Let's break down the java spell into our human language...  int    →  It tells the program about the datatype of array we want to create. Just like we did in making of simple variables.  []    →  It tells the program that the datatype is actually Array of Integers  rather than just variable of integer.  new int[5]    →  Think of it as just another magical spell you don't need to explore...

  INTRODUCTION Imagine you want to make a method that has to do a complex task which cannot be done in a single call. In that case, you can break the task into smaller parts: the method will do a small portion, then call itself again to handle the next part, and so on, until the desired result is reached RECURSION A recursive method is more like a loop. It will call itself and repeat the same process. We will manually set some conditions for when to stop this whole process, and what to pass as arguments when the method call itself again. Base Case. Base case is the most important part of recursive method.It is the condition which will decide when to stop the process. Without this the recursive method will keep on calling itself until the program CRASHES! It consists of a single if condition which when comes true the recursion will stop Correct Call We will set the call inside the method itself, and set the arguments in such way that each time it call itself it sends updated data ...