Graphs pattern
Word Ladder
Given beginWord, endWord and a word list, return the length of the shortest transformation sequence from beginWord to endWord, changing one letter at a time, where every intermediate word is in the list (or 0 if impossible). Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 127
- Hard
- 1 approach
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GraphsLeetCode 127
Hard
The approach
- 01 Words as a graph + BFS for the shortest ladder O(N · L · 26)O(N · L) space
What you will learn
- How to read Word Ladder and spot the graphs pattern in it
- Words as a graph + BFS for the shortest ladder: O(N · L · 26) time, O(N · L) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Graphs
See Word Ladder run, step by step
Sign in and this page opens on the animation, with all 9 Graphs problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.