Word Ladder II
Explore how to solve the Word Ladder II problem by finding all shortest transformation paths between two words. Learn to apply backtracking techniques and efficiently handle word lists to generate valid sequences, enhancing your problem-solving skills in coding interviews.
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Statement
You are given two words, beginWord and endWord, and a dictionary of words called wordList. Your task is to find all the shortest transformation sequences from beginWord to endWord, such that:
Only one letter can be changed at a time.
Each transformed word must exist in the given
wordList.The transformation sequence must begin with
beginWordand end withendWord.
Return all the shortest transformation sequences as a list of lists. If no valid transformation exists, return an empty list.
Constraints:
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