Learn how to find all shortest paths (Word Ladder II) from one word to another by changing one letter at a time. This guide uses a clear example, and in-place code comments to illustrate a level-by-level BFS approach.<\/p>\n\n\n\n
Here’s the [Problem Link<\/span><\/mark><\/a><\/strong>] to begin with.<\/p>\n\n\n You have a beginWord<\/strong>, an endWord<\/strong>, and a list of words called wordList<\/strong>.What the Problem Asks<\/h2>\n\n\n\n
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You want to transform beginWord<\/code> into endWord<\/code> by changing exactly one letter<\/strong> at a time.
Each new intermediate word must<\/strong> be in wordList<\/code>.
Return all possible shortest sequences<\/strong> of words from beginWord<\/code> to endWord<\/code>.<\/p>\n<\/blockquote>\n\n\n\nExample 1<\/h3>\n\n\n\n