Abstract: Recursive calls are implemented in C by calling its own function. The recursive solution of the Fibonacci sequence requires three components: basic conditions (n is less than or equal to 1), recursive calls (solving F(n-1) and F(n-2) by itself), increment/decrement (n every recursion Decrease 1) at a time. The advantage is that the code is concise, but the disadvantage is that the space complexity is high and stack overflow may occur. For large data sets, it is recommended to use dynamic programming to optimize space complexity.
#C Detailed explanation of function recursion: Recursion in dynamic programming
Recursion is the process of a function calling itself. In C, a recursive function needs to have the following components:
Practical case: Fibonacci sequence
The Fibonacci sequence is a sequence of numbers. Each number is the sum of the previous two numbers. It can be expressed as:
F(n) = F(n-1) F(n-2)
The following is a function that uses C to recursively solve the Fibonacci sequence:
int fibonacci(int n) { if (n <= 1) { return n; } return fibonacci(n-1) + fibonacci(n-2); }
How to understand recursive solution of Fibonacci sequence
Advantages and Disadvantages
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