Need of Recursive Function

A recursive function is a function that solves a problem by solving smaller instances of the same problem. This technique is often used in programming to solve problems that can be broken down into simpler, similar subproblems.

1. Solving complex tasks:

Recursive functions break complex problems into smaller instances of the same problem, resulting in compact and readable code.

2. Divide and Conquer:

Recursive functions are suitable for divide-and-conquer algorithms such as merge sort and quicksort, breaking problems into smaller subproblems, solving them recursively, and merging the solutions with the original problem.

3. Backtracking:

Recursive backtracking is ideal for exploring and solving problems like N-Queens and Sudoku.

4. Dynamic programming:

Recursive functions efficiently solve dynamic programming problems by solving subproblems and combining their solutions into a complete solution.

5. Tree and graph structures:

Recursive functions are great for working with tree and graph structures, simplifying traversal and pattern recognition tasks.

A Recursive function can be defined as a routine that calls itself directly or indirectly.

In other words, a recursive function is a function that solves a problem by solving smaller instances of the same problem. This technique is commonly used in programming to solve problems that can be broken down into simpler, similar subproblems.