#1408
String Matching in an Array
easy · verified · 69.8% accepted · 1,499 likes · top 78%
array · string · string matching
Description
Given an array of string words, return all strings in words that are a substring of another word. You can return the answer in any order.
Example 1:
Input: words = ["mass","as","hero","superhero"]
Output: ["as","hero"]
Explanation: "as" is substring of "mass" and "hero" is substring of "superhero".
["hero","as"] is also a valid answer.
Example 2:
Input: words = ["leetcode","et","code"]
Output: ["et","code"]
Explanation: "et", "code" are substring of "leetcode".
Example 3:
Input: words = ["blue","green","bu"]
Output: []
Explanation: No string of words is substring of another string.
Solution