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推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here’s your problem today. This problem was recently asked by Twitter:

Find all words that are concatenations of a list.

Input: [“tech”, “lead”, “techlead”, “cat”, “cats”, “dog”, “catsdog”]

Output: [‘techlead’, ‘catsdog’]

class Solution(object): def findAllConcatenatedWordsInADict(self, words): # Fill this in.

input = [“tech”, “lead”, “techlead”, “cat”, “cats”, “dog”, “catsdog”]


Note: This question is classified as “hard.” HINT: Start with a brute-force solution.