- #1
physicsfun
- 11
- 0
can someone explain java recursion to me?
Last edited:
class LinkedNode
{
public int data;
public LinkedNode next;
}
int factorial(int n)
{
if(n<=0)
return 1;
else
return n * factorial(n-1);
}
Recursion in Java is a programming technique where a method calls itself to solve a problem. It is a powerful and elegant way to solve problems that can be broken down into smaller subproblems.
A longest common subsequence (LCS) in Java is a sequence of characters that appear in the same order in two or more strings, but not necessarily consecutively. It is used to find the longest sequence of characters that are common between two or more strings.
Recursion helps in finding the longest common subsequence in Java by breaking down the problem into smaller subproblems. The LCS problem can be solved by comparing the last characters of the two strings and then recursively finding the LCS of the remaining strings.
The base case in Java recursion for finding the longest common subsequence is when one or both of the strings become empty. In this case, the LCS is considered to be zero as there are no more characters to compare.
No, recursion may not be the most efficient way to find the longest common subsequence in Java. It can lead to stack overflow if the input strings are too long. Dynamic programming is a more efficient approach for solving the LCS problem in Java.