#1970Easy#19 in Amazon's list· asked at 4 companies
Verifying an Alien Dictionary
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What we know
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
A prefix must come first.
Constraints
- •
1 <= words.length <= 100 - •
1 <= words[i].length <= 20 - •
order.length == 26 - •
All characters are lowercase English letters.