# Questions tagged [word-combinatorics]

Questions about combinatorics on languages of words, that is how many sequences of symbols with certain properties there are.

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### Growth function for non-regular languages

For language $L$ over an alphabet $\Sigma$ denote $\gamma_L(n)$ as the number of words of length $n$ in the language $L$. It is known that for regular languages this function represents a sequence ...
139 views

### Hex Word Search Generator Algorithm

I want to create an algorithm to build a hex matrix with given: - max n rows - max m collumns - min t rown - min q collumns containing the specific words from a list: "example", "test", "algorithm"....
91 views

### Given a permutation of n integers, how fast can a corresponding Standard Young's Tableau be created?

The Schensted insertion algorithm has an $O(n^2)$ running time, for constructing such a standard Young's Tableaux. But, since every permutation has a unique Young's tableau, there seems no reason as ...
42 views

### Number of words of length n for special language

Let $\Sigma$ be an alphabet and let $L$ be a language over it with the following properties: if $w\in L$ then there exists $v\in \Sigma^*$ such that $wv \in L$ and for every $s\in \Sigma$ the word \$...
28 views

### Is my recursive algorithm for Equivalent Words correct?

Here is my problem. Problem Given two words and a dictionary, find out whether the words are equivalent. Input: The dictionary, D (a set of words), and two words v and w from the dictionary. Output: A ...