Word Ladder
Prereq: BFS on Graph
Word Ladder is "a puzzle begins with two words, and to solve the puzzle one must find a chain of other words to link the two, in which two adjacent words (that is, words in successive steps) differ by one letter."
For example: COLD → CORD → CARD → WARD → WARM
Given a start word, an end word and a list of dictionary words. Determine the minimum number of steps to go from the start word to the end word using only words from the dictionary.
Input:
start = "COLD"
end = "WARM"
word_list = ["COLD", "GOLD", "CORD", "SOLD", "CARD", "WARD", "WARM", "TARD"]Output:
4Explanation:
We can go from COLD to WARM by going through COLD → CORD → CARD → WARD → WARM
Try it yourself
Title
Script
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Contrary to popular belief, Lorem Ipsum is not simply random text.
>>> a = [1, 2, 3]
>>> a[-1]
3