Questions tagged [dynamic-programming]
Dynamic programming is an algorithmic technique for efficiently solving problems with a recursive structure containing many overlapping subproblems.
297 questions
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Calculate optimal game upgrades, v3
This is the third iteration of the code from Calculate optimal game upgrades, v2 and Calculate optimal game upgrades. I'm looking for suggestions to further optimize this code. A brief summary of the ...
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LeetCode 678: Valid Parenthesis String, Recursion memoization to DP
How can the following recursion + memoization code be converted into a tabulation format dynamic programming solution?
The code is working, but I want to improve it.
The challenge I am facing is ...
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1
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Finding the number of distinct decompositions a number has using only repdigits
This is a problem from a previous semester that I am trying to upsolve. I am trying to solve a problem involving the total number of ways of decomposing a number using only repdigits. A repdigit is a ...
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Codeforces: D2. Counting Is Fun (Hard Version)
The code works okay for the following problem.
Problem
An array 𝑏 of 𝑚 non-negative integers is said to be good if all the elements of 𝑏 can be made equal to 0 using the following operation some (...
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Another ATMs cash-out (denomination) algorithm in Java
Related to this question and this answer, I would like to have a second review from you on a modified version.
The problem I tried to solve
Some kind of "Minimum count of numbers required from ...
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Leetcode: 2327. Number of People Aware of a Secret
On day 1, one person discovers a secret.
You are given an integer delay, which means that each person will share the secret with a new person every day, starting from delay days after discovering the ...
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k-dice Ways to get a target value
I'm trying to solve the following problem:
You have a k-dice.
A k-dice is a dice which have k-faces and each face have value written from 1 to k.
Eg. A 6-dice is the normal dice we use while playing ...
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Making my DP algorithm faster - longest palindromic substring
The following code is my solution to a LeetCode question - find the longest palindromic substring. My code is 100% correct, it passed once but it took too long, and in most of the reruns I hit a "...
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Re-order table columns in HTML dynamically with Javascript
I've a table in HTML looks like this:
Subjects
n1
n2
n3
subject1
10
0
0
subject2
0
5
20
...
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Find all non-crossing tuples which has the same content with a given tableau
Let T be a semistandard Young tableau of rectangular shape. For example,
[[1,2,4],[3,5,6]]
is such a tableau, where [1,2,4] and [3,5,6] are columns. All non-...
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Longest Palindromic Substring | Python Code Giving TLE
Problem Statement
Given a string s , return the longest palindromic substring in s.
Constraints
...
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Longest Increasing Subsequence of Rectangles
Background
I was looking at some programming Olympiads the other day, and I found this ACM-ICPC Ukraine 2013 pdf.
The part I am working on is Problem D, which consist of finding out how many rectangle ...
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0
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Bellman-Ford algorithm implementation
I have used an adjacency list to represent the graph.
This implementation is based on the procedure given in the book 'Introduction to Algorithms'.
...
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Divide array into three disjoint sets with equal sum
Problem definition : Array partition problem
Given an array of positive integers, divide it into three disjoint subsets having equal sum. These disjoint sets cover the complete array.
Example
Input: [...
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Recursive solution of ordered Coin Combinations II (CSES)
Question Link
Consider a money system consisting of n coins. Each coin has a positive integer value. Your task is to calculate the number of distinct ordered ways you can produce a money sum x using ...
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Leetcode 377. Combination Sum IV Javascript Memoization attempt
Problem Statement
...
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Calculate sum of a substring
I try to solve some old Codeforces questions. The problem is;
Petya once wrote a sad love song and shared it to Vasya. The song is a
string consisting of lowercase English letters. Vasya made up q
...
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K Inverse Pairs Array - Brute Force
For an integer array nums, an inverse pair is a pair of integers [i, j] where ...
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I want reduce the time complexity for this ladder problem to find the minimum ladders required
I was trying to attempt below given challenge. I tried multiple ways to solve the problem but none of them were good enough to pass the time limit. Please advise if you have any idea to improve on ...
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Count the number of distinct subarrays
I want to determine the number of distinct subarrays that can form having at most a given number of odd elements. Two subarrays are distinct if they differ at even one position. The subarray is a ...
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Efficiently calculate value of Pascal's Triangle using memoization and recursion
So reading about functional programming, applications to dynamic programming, and learning Scala. I figured I would try it out with a popular example, Pascal's Triangle, tests against known values ...
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Searching for an idiomatic Rust implementation of Minimum Edit Distance (LeetCode #72)
I am solving LeetCode Dynamic Programming challenges (this one is #72, at https://leetcode.com/problems/edit-distance).
Here below, I've implemented a Rust solution for the minimum edit distance ...
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Divide a set into subset with some constraints
Problem:
Given a list L consisting of not necessarily unique non-negative integers, find the minimum number of subset with maximum sum ...
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LeetCode: Stone Game C#
https://leetcode.com/problems/stone-game/
Alex and Lee play a game with piles of stones. There are an even
number of piles arranged in a row, and each pile has a positive
integer number of stones ...
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