Verifying An Alien Dictionary

Easy

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In an alien language, surprisingly, they also use English lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters.

Given a sequence of words written in the alien language, and the order of the alphabets, return true if and only if the given words are sorted lexicographically in this alien language.

Example 1:

Input: words = ["dag","disk","dog"], order = "hlabcdefgijkmnopqrstuvwxyz"

Output: true

Explanation: The first character of the strings are same ('d'). 'a', 'i', 'o' follows the given ordering, which makes the given strings follow the sorted lexicographical order.

Example 2:

Input: words = ["neetcode","neet"], order = "worldabcefghijkmnpqstuvxyz"

Output: false

Explanation: The first 4 characters of both the strings match. But size of "neet" is less than that of "neetcode", so "neet" should come before "neetcode".

Constraints:

  • 1 <= words.length <= 100
  • 1 <= words[i].length <= 20
  • order.length == 26
  • All characters in words[i] and order are English lowercase letters.


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words =

order =