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How to create a word ladder in Python?
I’m trying to create a word ladder program in python. I’d like to generate words that are similar to a given word. In c++ or java, I would go through each valid index in the original string, and replace it with each letter in the english alphabet, and see if the result is a valid word. for example (pseudocode) .
Who was the creator of the word ladder puzzle?
It’s likely that the first word ladder puzzles were created by none other than Lewis Carroll (Charles Lutwidge Dodgson), the talented British mathematician, and author of the Alice’s adventures. According to Carroll, he invented them on Christmas Day in 1877.
Which is the shortest ladder in the English language?
Further, we’ll define an optimal ladder as the one that is the shortest possible way to transition from one word to another (if multiple paths are possible). The longest known English word ladder is a monster 22 steps long, and is the chain that converts CHARGE to COMEDO. (See Update).
How are the words on the word ladder different?
At each stage, adjacent words on the ladder differ by the substitution of just one letter. Each chain word (or rung of the word ladder), also needs to be a valid word. Below is an example of turning TABLE into CROWN (this time, in nine steps):
How do you change word in word ladder?
Transform the word “FOOL” into the word “SAGE”. In a word ladder puzzle you must make the change occur gradually by changing one letter at a time. At each step you must transform one word into another word, you are not allowed to transform a word into a non-word.
What’s the best way to solve the ladder problem?
Use the graph algorithm known as breadth first search to find an efficient path from the starting word to the ending word.
How to make a word ladder to a target?
Approach: 1 Start from the given start word. 2 Push the word in the queue 3 Run a loop until the queue is empty 4 Traverse all words that adjacent (differ by one character) to it and push the word in a queue (for BFS) 5 Keep doing so until we find the target word or we have traversed all words.
How to calculate the length of a word ladder?
Below is an alternative implementation to the above approach. Here, in this approach, we find out all the intermediate words of the start word and the words in the given list of dictionary and maintain a map of the intermediate word and a vector of the original word (map >).