combinations Questions
4
Solved
Given n=2, I want the set of values (1, 1), (1, 2), and (2, 2). For n=3, I want (1, 1), (1, 2), (1, 3), (2, 2), (2, 3), and (3, 3). And so on for n=4, 5, etc.
I'd like to do this entirely within th...
Hamo asked 18/10, 2021 at 18:53
6
Solved
I am looking for an algorithm which takes as input a set of two elements T = {0, 1} and k and generates all k-combinations of T as follows:
000
001
010
011
100
101
110
111
It is straightforward ...
Confection asked 18/9, 2012 at 10:30
7
Solved
I'm trying to generate a nested array containing all combinations with repetition in Apple's Swift programming language.
An detailed explanation of combinations with repetition can be found near th...
Dakar asked 6/8, 2014 at 14:4
1
Solved
Consider a list : [A,B,C,D]
I have to find the fastest way split the list in all possible sets of pairs such that the pairs are mutually exclusive:
For example, for the given list, the result...
Roque asked 13/10, 2021 at 10:5
2
Solved
How would we go about testing all combinations of subarrays in a array where
length of each subarray is equal to P times the sum of subarray elements.
A brief example:
Edit:
A = [2,-1,3,0,1,2,1] ,...
Etude asked 23/9, 2021 at 8:33
2
Solved
Consider the following example:
import itertools
import numpy as np
a = np.arange(0,5)
b = np.arange(0,3)
c = np.arange(0,7)
prods = itertools.product(a,b,c)
for p in prods:
print(p)
This iter...
Begum asked 28/9, 2021 at 13:50
6
Solved
I would like to create all possible combinations of a binary vector made of a fixed number of 0 and 1. For example:
dim(v)=5x1; n1=3; n0=2;
In this case I'd like to have something like:
1,1,1,0,0...
Shadowgraph asked 6/2, 2015 at 14:33
4
Solved
I have a list of possible choices: [[1], [2, 4], [4], [5, 6, 2], [5, 3]].
I want to list all combinations, taking maximum one element from each sublist, without repeating elements.
So [1, 2, 4, 5, ...
Acetaldehyde asked 14/9, 2021 at 20:33
3
I have often used itertools module in Python but it feels like cheating if I don't know the logic behind it.
Here is the code to find combinations of string when order is not important.
def combi...
Minica asked 23/7, 2014 at 10:23
3
I want to retrieve k,v-pairs from a HashMap.
The entrys are like this:
a = 3,4
b = 5,6
and so on. I need combinations of these values.
a=3, b=5
a=3, b=6
a=4, b=5
a=4, b=6
I don't know how many ke...
Fascista asked 16/3, 2011 at 9:0
4
Solved
I have n Sets. Each Set has different number of elements. I would like to write an algorithm which give me all possible combinations from the sets. For example, let's say we have:
S1={1,2}, S2={A,B...
Defibrillator asked 14/5, 2013 at 18:1
2
Solved
I need a function similar to expand.grid but without the combinations of duplicate elements.
Here is a simplified version of my problem.
X1 = c("x","y","z")
X2 = c(&qu...
Isomorph asked 19/6, 2021 at 13:15
4
I'm sure this is pretty simple, but I'm stumped for a way to do this. Essentially if I have an array with P collumns and V^P rows, how can I fill in all the combinations, that is, essentially, all ...
Vassaux asked 23/4, 2012 at 8:47
4
Solved
Let's say I have three types of coins -- a penny (0.01), a nickel (0.05), and a dime (0.10) and I want to find the number of ways to make change of a certain amount. For example to change 27 cents:...
Krute asked 8/5, 2021 at 22:30
3
Solved
I am looking to generate more permutation that sums up to a given number N, however this time more efficiently. Since by general methods, it takes forever to create 100+ permutations.
However I'm a...
Impostume asked 18/5, 2020 at 0:55
5
Solved
I have a map of lists like:
Map("a" -> [1,2,3], "b" -> [4,5,6], "c" -> [7])
I need to produce:
[
Map("a" -> 1, "b" -> 4, "c&qu...
Pellikka asked 10/3, 2021 at 21:50
11
Solved
Given an unknown amount of lists, each with an unknown length, I need to generate a singular list with all possible unique combinations.
For example, given the following lists:
X: [A, B, C]
Y: [W...
Spermatogonium asked 19/6, 2013 at 13:40
6
Hello there Stackoverflow people,
I run a site that finds its users the cheapest place to buy books. This is easy for a single book, but for multiple books it can sometimes be cheaper to purchase ...
Mcalpin asked 8/1, 2010 at 5:1
4
Solved
Is it possible to combine multiple enums together? Below is code sample of what I would like to see:
enum PrimaryColors
{
Red,
Yellow,
Blue
}
enum SecondaryColors
{
Orange,
Green,
Purple
}
...
Southwest asked 5/12, 2012 at 23:56
6
Solved
How one can calculate the number of combinations and permutations in R?
The Combinations package failed to install on Linux with the following message:
> install.packages("Combinations"...
Slovenly asked 26/10, 2011 at 16:41
5
Solved
I want to compute all possible lists of pairs you could make of a set. For instance:
input = [1, 2, 3, 4, 5, 6]
output = {[(1,2), (3,4), (5,6)],
[(2,3), (4,5), (1,6)],
[(2,4), (1,3), (5,6)],
[...
Zomba asked 13/2, 2014 at 17:49
3
Solved
I need help finding an efficient algorithm to solve this problem:
Given n unsorted sets of integers, find all possible combinations of n and their intersections. For example:
Input (n=3):
Set 1 = ...
Sokotra asked 24/9, 2014 at 23:27
9
Solved
I have the two arrays:
String[] operators = {"+", "-", "*"};
int[] numbers = {48, 24, 12, 6};
And I want to get all possible combination in a String format like this:...
Anteroom asked 14/12, 2018 at 13:46
2
Suppose I have this data frame:
matrix(c(2,4,3,1,5,7,1,2,3,5,8,2,4,5,1,1,3,6,1,3,4,5,6,1),nrow=6,ncol=4,byrow = TRUE)->X
as.data.frame(X)->X.df
V1 V2 V3 V4
1 2 4 3 1
2 5 7 1 2
3 3 5 8 2
4 ...
Deration asked 18/8, 2013 at 11:59
3
My task is to generates all possible combinations of that rows without the hidden # number sign. The input is XOXX#OO#XO and here is the example of what the output should be:
XOXXOOOOXO
XOXXOOOXXO...
Shimmery asked 30/1, 2021 at 20:50
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