Number of Ways to Form Target String Given a Dictionary
Understand how to use dynamic programming to count the number of distinct ways to form a target string from given words of equal length. Learn the constraints on character selection positions and apply modulo arithmetic for large results. This lesson helps you implement a solution that tracks valid combinations efficiently based on problem rules.
We'll cover the following...
We'll cover the following...
Statement
You are given a list of words, where each string has the same length target, of length target can be formed using the given words under the following rules:
You must build the
targetfrom left to right.To form the
ithcharacter (0-indexed) ...