All Questions
10
questions
1
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62
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How to discover a recursive relation in a data set?
For a set of data, $x(n)$, where $n = 1, 2, 3, ...$, we know there are some kind of recursive relations among those data, $x(n)$ somehow depends on previous data $x(n-1), x(n-2), ...x(1)$, but we do ...
- 553
0
votes
1
answer
266
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Algorithm verification: Get all the combinations of possible words
I wanted to know if the algorithm that i wrotte just below in python is correct.
My goal is to find an algorithm that print/find all the possible combinaison of words that can be done using the ...
- 805
1
vote
0
answers
81
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If chess is deterministic, can we prove that from a set of infinitely large number of games, that white always wins/doesn't win?
In some lesser complex games such as Tic-tac-toe or connect4, the first person can force a win/draw. Can we prove the same in a much more complex game like chess, where white can force a win/draw?.
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2
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0
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192
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Proof that my greedy algorithm for assigning candidates to jobs works
I was using the answers on this question as a guide for proving that my greedy algorithm is correct. (Unfortunately, CS Stack Exchange does not accept proof verification questions, which is why I ...
3
votes
2
answers
754
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How to calculate the number of possible multiset partitions into N disjoint sets?
I have made a Ruby program, which enumerates the possible multiset partitions, into a given number of disjoint sets (N), also called bins. The bins are indistinguishable. They can be sorted in any ...
- 155
1
vote
1
answer
354
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Random knapsack algorithm: Select n positive integers that sum up to S
Problem to solve:
Have a list of M products (eg 100000) with various prices.
I want to randomly select n products(eg 10) that their sum of prices is S(eg. 100).
Duplicates are allowed or not, does ...
- 123
-2
votes
2
answers
451
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Properties of a Matrices whose columns and rows all add to the same value.
Given a matrix A =(aij) that sum of the entries on any row of A is equal to δ and the sum of the entries on any column of A is equal to δ. I was wondering if B=(bij) also has these properties, such ...
- 13
2
votes
2
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223
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Greedy algorithm in matching students to juries that they like with an upper bound number of students each jury can check
Recently I solved this following problem using greedy algorithm.
There are $100$ students who participate at exam.Also there are $25$ members of jury.Each student is checked by one jury.Known that ...
- 4,102
1
vote
1
answer
108
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How to know no matter what method you use to count inversions, a given set always has the same number?
This may be a bad question. Right now I'm learning algorithms for counting inversions. My question is, how do you know that no matter how you examine a set of numbers, you will always count the same ...
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3
votes
1
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79
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Dependency of submatrix used in a combinatorial strategy .
This is a verification post , Please inform if anything is undefined or unclear or miss-tagged. Also if you vote up/down it would be helpfull if you leave a comment.
Introduction:
Given a matrix A of ...
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