Reverse the given Array without using built in function

Objective: Given a array, write an algorithm to reverse the array.

Example:

int a[] = {1, 2, 3, 4, 5}
Output: {5, 4, 3, 2, 1}

Approach:

• It’s obvious that you cannot use any built-in function reverse it.
• It’s a simple solution, we will solve it using recursive and non-recursive way.
• Take 2 elements at a time, one from the from start and one from the end and swap them.
• Now for recursion, Make a recursive call to rest of the string and for non-recursive solution, use the for loop and swap the elements start +1 and end +1.

Code:Run This Code

Output:

Original Array[1, 2, 3, 4, 5]
Reversed - Array(Iteration):[5, 4, 3, 2, 1]
Reversed Again - Array(Recursion):[1, 2, 3, 4, 5]