Here, We will learn about the iterative algorithm, iteration, implementation and properties of iteration.

**Iterative Algorithms:**

An **Iterative Algorithm** that calls repeatedly but for a finite number of times.

It use constructs like loops and sometime other data structures like stacks and queues to solve the problems.

**Iteration** is a technique in which function call repeatedly for a finite number of times.

**Implementation**

```
public static long fib (long n)
{
if ((n == 1) || (n == 2)){
return 1;
}
else{
long prev = 1, current = 1, next = 0;
for (long i=3; i<=n; i++){
next = prev + current;
prev = current;
current = next;
}
return next;
}
}
```

Code language: Java (java)

**Properties of Iteration**

- Iteration uses repetition structure.
- It terminates when the loop condition fails.
- It does not use the stack so it’s faster than recursion.
- It consumes less memory.
- Infinite looping uses CPU cycles repeatedly.
- It makes code longer.

### Related:

#### Difference Between Recursion and Iteration

Here, We will learn about recursion, iteration, differences between recursion and iteration and their code…

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