Getting Nth permutation of a sequence and getting back original using its index and modified sequence Question: I know the most popular permutation algorithms (thanks to wonderful question/answer on SO, and other related sites, such as Wikipedia, etc), but I recently wanted to see if I could get the Nth permutation without exhausting the whole …
Is there a more elegant way of getting permutations with replacement in python? Question: I currently want all permutations of a set of elements with replacement. Example: elements = [‘a’, ‘b’] permutations with replacement = [(‘a’, ‘a’, ‘a’), (‘a’, ‘a’, ‘b’), (‘a’, ‘b’, ‘a’), (‘a’, ‘b’, ‘b’), (‘b’, ‘a’, ‘a’), (‘b’, ‘a’, ‘b’), (‘b’, ‘b’, …
Find permutations which also match other constraints Question: Given the following list: dbset = [[{‘id’: ‘10556’, ‘nation’: ‘France’, ‘worth’: ’70’}], [{‘id’: ‘14808’, ‘nation’: ‘France’, ‘worth’: ’65’}], [{‘id’: ‘11446’, ‘nation’: ‘Ghana’, ‘worth’: ’69’}], [{‘id’: ‘11419’, ‘nation’: ‘France’, ‘worth’: ’69’}], [{‘id’: ‘11185’, ‘nation’: ‘Ghana’, ‘worth’: ’69’}], [{‘id’: ‘1527’, ‘nation’: ‘Ghana’, ‘worth’: ’64’}], [{‘id’: ‘12714’, ‘nation’: ‘Moldova’, ‘worth’: …
Find all words from a list of letters, including duplicate letters? Question: I am trying to write a Python script that more or less mimics the New York Times game Spelling Bee (if you’ve played it). I have a code that prints out all the words from a list of letters, but I want to …
Python3 – Permutations for 7 digit number that totals to a number Question: I need to find a solution for the below problem in Python3. I tried itertools.combinations but not clear on how to do it. Prepare a 7-digit number that sums to 5. Each digit can be between 0-4 only. Also, there can be …
Creating Permutations from DataFrame without Repetition Question: I’ve searched for a solution to this problem but haven’t found anything specific to this problem. My dataframe is structured like this: column_1 column_2 column_3 a 2 3 7 b 9 4 3 c 1 5 2 I want to find all permutations of the above dataframe without …
Generate Permutation With Minimum Guaranteed Distance from Elements in Source Question: Given a sequence a with n unique elements, I want to create a sequence b which is a randomly selected permutation of a such that there is at least a specified minimum distance d between duplicate elements of the sequence which is b appended …
Create data frames for each unique permutation of groups of a Dataframe Question: Suppose I have the following Dataframe in Python: input_df = pd.DataFrame({ ‘Previous’: [‘1000’, ‘1000’, ‘latex’, ‘latex’], ‘Ignore’:[None, None, [‘free’], [‘free’]], ‘New’: [‘100’, ‘200’, ‘nylon’, ‘cloth’]}) I would like to generate the following four dataframes: df1 = pd.DataFrame({ ‘Previous’: [‘1000′,’latex’], ‘Ignore’: [None, [‘free’]], …
Print Permutations of Array in Python Question: Apologies in advance as this question has been repeated ad nauseum. I’ve banged my head for 3+ hours on what should be simple, but just cannot figure this out. If anyone can tell me what’s going wrong I’ll grant you naming rights to my first born. outputs = …
How to get every string permutation where each letter is from a different string Question: I have this block of code in python3: keyLetters = [] for coset in cosets: keyLetters.append(Counter(coset).most_common(8)) Where cosets is a list of gibberish strings, and keyLetters are a list of the most common letters from each string. My goal is …
