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How to Solve Verifying an Alien Dictionary Problem
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Easy#953
LeetCode ProblemVerifying an Alien Dictionary
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 alphabet, return true if and only if the given words are sorted lexicographically in this alien language.
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Problem Breakdown
Understanding the Verifying an Alien Dictionary Problem
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Problem Statement
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 alphabet, return true if and only if the given words are sorted lexicographically in this alien language.
EasyProblem #953
LeetCodeVerifying an Alien Dictionary
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Examples
# Example 1
Input
words = ["hello","leetcode"], order = "hlabcdefgijkmnopqrstuvwxyz"
Output
true
# Example 2
Input
words = ["word","world","row"], order = "worldabcefghijkmnpqstuvxyz"
Output
false
# Example 3
Input
words = ["apple","app"], order = "abcdefghijklmnopqrstuvwxyz"
Output
false
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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Solve Verifying an Alien Dictionary — In an alien language, surprisingly, they also use English lowercase letters, but...
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