#1994Hard#40 in Nutanix's list· asked at 9 companies
Word ladder II
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What we know
Example 1
Input: beginWord = "hit", endWord = "cog", wordList = ["hot","dot","dog","lot","log","cog"] Output: [["hit","hot","dot","dog","cog"],["hit","hot","lot","log","cog"]]
Example 2
Input: beginWord = "hit", endWord = "cog", wordList = ["hot","dot","dog","lot","log"] Output: []
endWord is not in the word list.
Constraints
- •
1 <= beginWord.length <= 5 - •
endWord.length == beginWord.length - •
1 <= wordList.length <= 500 - •
All words consist of lowercase English letters and are unique.