" to understand recursion, we first have to understand recursion! "

---

Recursion and Iteration are both used for a similar objective: to execute a sequential set of instructions repeatedly. However, there are some major differences between them functionally. They are outlined below ::

I of V: the concept of recursion:

---

II of V: loops vs recursion

---

IV OF V: THE CONCEPT OF RECURSION:

---

V of V : VISUAL

In iteration the value of the control variable continuously approaches the value in the conditional statement.
The recursive function keeps on converging to the defined base case as it continuously calls itself. In iteration a control variable stores the value, which is then updated, monitored, and compared with the conditional statement. In recursion "stack" memory is used to store the current state of the function. In iteration Infinite loops keep utilizing CPU cycles until we stop their execution manually. In recursion if there is no base case defined, recursion causes a stack overflow error.

Iteration allows the execution of a sequential set of statements repetitively using conditional loops. In recursion a statement in the function’s body calls the function itself. In Iteration there are loops with a control variable that need to be initialized, incremented or decremented and a conditional control statement that continuously gets checked for the termination of execution. A recursive function must comprise of at least one base case i.e. a condition for termination of execution.

---

In this video we will be reviewing what is recursion and its applications in Java by looking at some examples of how we can use recursions to solve various problems. First, let's understand what Recursion is. Recursion in java is when a function calls itself directly or indirectly continuously. A method in java that calls itself is called a recursive method. The idea is to represent our problems in terms of one or more smaller problems, and add one or more "base conditions" that stop the recursion.

---

---