How to generate all valid permutations of parentheses in Python? Question: I want to generate all possible permutations of a set of parentheses of a certain length N. Example: if N = 1 Output: [‘()’] if N = 3 Output: [‘()(())’, ‘(())()’, ‘(()())’, ‘((()))’, ‘()()()’] Asked By: Fijaja Mulla || Source Answers: Credit: https://prepinsta.com/python-program/generate-all-combinations-of-balanced-parentheses/ def …
Creating permutations of tree diagram dynamically and scalable Question: I am trying to create permutations which follows a datatree design in Python. The root should be dynamically and could contain a list of lists. This image shows how the permutations should be created Arrows show allowed combinations. This image explains what could be combined in …
Given a set of permutations return one specific number Question: I want your help to catch an specific number or any number that I asked for in bool_check in this case that number is "4321" so i’ve been struggling to get True and also I want the program to show me that specific number from …
Is there a Python function to compute minimal L2 norm between 2 matrices up to column permutation? Question: I have two sets of column vectors X = (X_1 … X_n), Y = (Y_1 … Y_n) of same shape. I would like to compute something like this: i.e the minimal L2 norm between X and Y …
Automaton for recognition abc , bac, bca .. words Question: I need to build an automation, to permutate letters of three symbols – a,b,c. For example the results can be – abc,acb,bac,bca,cab,cba, total 6 permutations for 3 symbols. Can this be coded in Python? Please help! Each symbol can be used only one time. And …
Generating permutations in Python 3 Question: I wrote this simple permutations generator in Python 3. The permuted digits are a string, and the function should yield successive strings as well. The function returns nothing. Could I please ask for some help with this? def permutations(digits): if digits: for d in digits: remaining = digits.replace(d,"") for …
Is there a way to speed up permutations of permutations? Question: I’m trying to generate permutations of 5 numbers from a list (numset). Then I choose two of the five numbers and test them (another permutation). This appears to work but is very inefficient and time consuming with a large numset list (100k+ entries). I’m …
Permutations without cycles Question: I want to generate all possible permutations of a list, where cyclic permutations (going from left to right) should only occur once. Here is an example: Let the list be [A, B, C]. Then I want to have permutations such as [A, C, B] but not [B, C, A] as this …
Permutation without repetition, efficient way Question: N = 14 SIZE = 6 lst = range(N+1) sum_n_combs = [ list(comb) for comb in it.combinations_with_replacement(lst, SIZE) if sum(comb) == N ] print(sum_n_combs) output [[0, 0, 0, 0, 0, 14], [0, 0, 0, 0, 1, 13], [0, 0, 0, 0, 2, 12], [0, 0, 0, 0, 3, 11], …
How to generate combinations of elements of different lists? Question: I have a list of lists that goes like [[1,2,3],[3,4,5],[5,6,7,8]] I want to create a program/function that creates a combinations like 1,3,5 1,3,6 1,3,7 1,3,8 1,4,5 1,4,6 . . . If there’s a way you can do it without using the itertools module, that would …
