Number Of Ways To Form A Target String Given A Dictionary
Dynamic Programming solution for "Number of Ways to Form a Target String Given a Dictionary" implemented in PHP using memoization to efficiently count the number of ways to form the target string.
1639. Number of Ways to Form a Target String Given a Dictionary Difficulty: Hard Topics: Array, String, Dynamic Programming You are given a list of strings of the same length words and a string target. Your task is to form target using the given words under the following rules: target should be formed from left to right. To form the ith character (0-indexed) of target, you can choose the kth character of the jth string in words if target[i] = words[j][k]. Once you use the kth character of the jth string of words, you can no longer use the xth character of any string in words where x <= k. In...