Common Child (Lowest Common Subsequence) Java Coding Challenge | HackerRank | How'd You Code That?
Common Child on HackerRank: https://www.hackerrank.com/challenges...
Lowest Common Subsequence on Leetcode:
https://leetcode.com/problems/longest...
With every discipline, there exists proven methods that should be used to prevent redundancies when solving common problems. A physicist refers to equations; a medical surgeon relies on common surgical procedures; a chemist uses a chemical equation to describe the symbolic representation of a chemical reaction, and a mathematician or computer scientist utilizes algorithms.
Today we're leveraging a familiar computer science algorithm to solve the HackerRank Challenge Common Child.
In this challenge, the problem statement reads:
A string is said to be a child of another string if it can be formed by deleting 0 or more characters from the other string. Given two strings of equal length, what's the longest string that can be constructed such that it is a child of both?
For example, A-B-C-D and A-B-D-C have two children with a maximum length of 3: ABC, and ABD. They can be formed by eliminating either the D or C from both strings. Note that we will not consider A-B-C-D as a common child because we can't rearrange characters, and ABCD is not equal to ABDC.
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