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Alien Dictionary Leetcode

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1.Alien Dictionary Leetcode

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 lexicographicaly in this alien language.

2.Alien Dictionary Leetcode

Alien Dictionary is a type of problem in which we have N-words and they are sorted in alien dictionary order. We need to find the order of the characters. The alien language is also used the lowercase letters but the order of the letters is different. Let’s see how we find the order of the character present in the given words.

3.Alien Dictionary Leetcode

Alien Dictionary There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language.

4.Alien Dictionary Leetcode

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language.Derive the order of letters in this language.

5.Alien Dictionary Leetcode

Leetcode 269: Alien dictionary (3) Leetcode 272: closest binary search tree value II (1) Leetcode 273: Integer to English words (3) Leetcode 273: Number of digit one (1) Leetcode 278: First bad version (1) Leetcode 295 (2) Leetcode 295: Median of Stream (1) Leetcode 3 (1) Leetcode 300 (1) Leetcode 300: Longest increasing subsequence (2)

6.Alien Dictionary Leetcode

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language.

7.Alien Dictionary Leetcode

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language.Derive the order of letters in this language.

8.Alien Dictionary Leetcode

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the order of letters in this language. Example 1:

9.Alien Dictionary Leetcode

The idea is to create a graph of characters and then find topological sorting of the created graph. Following are the detailed steps. 1) Create a graph g with number of vertices equal to the size of alphabet in the given alien language. For example, if the alphabet size is 5, then there can be 5 characters in words.

10.Alien Dictionary Leetcode

Given a sorted dictionary of an alien language having N words and k starting alphabets of standard dictionary. Find the order of characters in the alien language. Note: Many orders may be possible for a particular test case, thus you may return any valid order. Input: The first line of input contains an integer T denoting the no of test cases.

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1  Alien Dictionary — Leetcode #269
Topological sort, Yay! Finally I have a chance to do this question. Thanks for @yavinci (https://leetcode.com/problems/alien-dictionary/discuss/70115/3ms-Clean-Java-Solution-(DFS)) for your clean solution in discussion. I find it very inspiring.
Watch Video: https://www.youtube.com/watch?v=RPpnRavqb8g

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