472. Concatenated Words
Description
Given an array of strings words
(without duplicates), return all the concatenated words in the given list of words
.
A concatenated word is defined as a string that is comprised entirely of at least two shorter words (not necessarily distinct) in the given array.
Example 1:
Input: words = ["cat","cats","catsdogcats","dog","dogcatsdog","hippopotamuses","rat","ratcatdogcat"] Output: ["catsdogcats","dogcatsdog","ratcatdogcat"] Explanation: "catsdogcats" can be concatenated by "cats", "dog" and "cats"; "dogcatsdog" can be concatenated by "dog", "cats" and "dog"; "ratcatdogcat" can be concatenated by "rat", "cat", "dog" and "cat".
Example 2:
Input: words = ["cat","dog","catdog"] Output: ["catdog"]
Constraints:
1 <= words.length <= 104
1 <= words[i].length <= 30
words[i]
consists of only lowercase English letters.- All the strings of
words
are unique. 1 <= sum(words[i].length) <= 105
Solutions
Solution 1
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