Questions tagged [dynamic-programming]
Dynamic programming is an algorithmic technique for efficiently solving problems which have recursive structure with many overlapping subproblems. Do NOT use this tag for general "dynamic" behavior in code.
dynamic-programming
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What is the difference between memoization and dynamic programming?
What is the difference between memoization and dynamic programming? I think dynamic programming is a subset of memoization. Is it right?
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What is dynamic programming? [closed]
What is dynamic programming?
How is it different from recursion, memoization, etc?
I have read the wikipedia article on it, but I still don't really understand it.
unknown
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answers
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What is the difference between bottom-up and top-down?
The bottom-up approach (to dynamic programming) consists in first looking at the "smaller" subproblems, and then solve the larger subproblems using the solution to the smaller problems.
The top-down ...
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How to determine the longest increasing subsequence using dynamic programming?
I have a set of integers. I want to find the longest increasing subsequence of that set using dynamic programming.
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Difference between Divide and Conquer Algo and Dynamic Programming
What is the difference between Divide and Conquer Algorithms and Dynamic Programming Algorithms? How are the two terms different? I do not understand the difference between them.
Please take a simple ...
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Throwing cats out of windows
Imagine you're in a tall building with a cat. The cat can survive a fall out of a low story window, but will die if thrown from a high floor. How can you figure out the longest drop that the cat can ...
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Why is the knapsack problem pseudo-polynomial?
I know that Knapsack is NP-complete while it can be solved by DP. They say that the DP solution is pseudo-polynomial, since it is exponential in the "length of input" (i.e. the numbers of bits ...
- 41.8k
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Find common substring between two strings
I'd like to compare 2 strings and keep the matched, splitting off where the comparison fails.
So if I have 2 strings:
string1 = "apples"
string2 = "appleses"
answer = "apples&...
- 1,479
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A simple example for someone who wants to understand Dynamic Programming [closed]
I am looking for a manageably understandable example for someone who wants to learn Dynamic Programming. There are nice answers here about what is dynamic programming. The fibonacci sequence is a ...
- 96.1k
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What is the minimum cost to connect all the islands?
There is a grid of size N x M. Some cells are islands denoted by '0' and the others are water. Each water cell has a number on it denoting the cost of a bridge made on that cell. You have to find the ...
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What's the difference between recursion, memoization & dynamic programming? [duplicate]
Related question:
Dynamic programming and memoization: top-down vs bottom-up approaches
I have gone through a lot of articles on this but can't seem to make sense of it. At times recursion and ...
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Find the number of occurrences of a subsequence in a string
For example, let the string be the first 10 digits of pi, 3141592653, and the subsequence be 123. Note that the sequence occurs twice:
3141592653
1 2 3
1 2 3
This was an interview question ...
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Getting the submatrix with maximum sum?
Input: A 2-dimensional array NxN - Matrix - with positive and negative elements.Output: A submatrix of any size such that its summation is the maximum among all possible submatrices.
Requirement: ...
- 1,133
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Is there a generic way to memoize in Scala?
I wanted to memoize this:
def fib(n: Int) = if(n <= 1) 1 else fib(n-1) + fib(n-2)
println(fib(100)) // times out
So I wrote this and this surprisingly compiles and works (I am surprised because ...
- 33.5k
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How to count integers between large A and B with a certain property?
In programming contests, the following pattern occurs in a lot of tasks:
Given numbers A and B that are huge (maybe 20 decimal digits or more), determine the number of integers X with A ≤ X ≤ B ...
- 94.5k