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Questions - combinations

Combination of elements of different lists or tuples

I would like to get all the possible combinations between the elements of different lists or arrays. Let's say I have L1 = [A,B] and L2 = [C,D]. If I somehow use itertools.combination for Python to lo...
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FedericoAC

python

combinations

python-itertools

Votes: 0

Answers: 1

Latest Answer

Perhaps itertools.product: >>> from itertools import product >>> L1 = ['A', 'B'] >>> L2 = ['C', 'D'] >>> list(product(L1, L2)) [('A', 'C'), ('A', 'D'), ('B', 'C'), ...
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Andrej Prsa

Math : How many combinations are there with m people and n gifts？

I met a math question. Let's say there are m people and n gifts. A people may receive all n gifts or a (0 <= a < n) gifts or nothing (0 gift). But all the gifts need to gave away. In addition, a...
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leo0807

math

combinations

permutation

Votes: 0

Answers: 1

Latest Answer

The first gift can be given to anyone of m persons. Also the second gift can be given to anyone of m persons. The same for the third, forth, fifth, ... gift. There are therefore m^n possible ways to h...
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md2perpe

Finding feasible combinations in dataframe R / combinatorics

I have the following challenge: dataframe with 218 observations (rows) and 218 variables (cols). The values are either TRUE or FALSE. Now i need to find combinations of variables (cols) that appear (T...
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RuddThreeTrees

r

combinations

combinatorics

Votes: 0

Answers: 1

Latest Answer

#all items that have TRUE in 2 or more rows items <- names(which(colSums(data) >= 2)) # all possible combinations of 2 (or more) items lapply(2:length(items), function(x) combn(items, x) # [[1]]...
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Wimpel

Algorithm - Minimum items required per Set

The user add the items in the cart and I need to give him the best combination of combos (sets) available for the items, so he can get the best possible price. If an item doesn't fit in a combo (set) ...
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Henrique

algorithm

tree

set

logic

combinations

Votes: 0

Answers: 0

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