All Questions
Tagged with dynamic-programming java
60 questions
5
votes
3
answers
962
views
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 ...
1
vote
3
answers
133
views
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 ...
- 772
3
votes
1
answer
4k
views
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 ...
- 31
8
votes
5
answers
2k
views
Repeatedly partitioning an array equally as far as possible
I solved HackerRank Nikita and the Game. The implementation is correct as program passes all test cases.
Nikita just came up with a new array game. The rules are as follows:
Initially, ...
3
votes
2
answers
2k
views
LeetCode: Longest String Chain (Java)
For the question, I had a pretty messy solution so I would like some advice on how to better use Java to make the code a bit cleaner.
Also, a semi-hack that I did that I'm not proud of is checking if ...
- 85
3
votes
2
answers
1k
views
Counting the number of ways to decode a string
I am working on problem where I need to decode a string:
A message containing letters from A-Z is being encoded to numbers
using the following mapping:
'A' -> 1
'B' -> 2
...
'...
- 499
4
votes
1
answer
164
views
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 ...
- 143
1
vote
1
answer
834
views
Maximum subset sum with no adjacent elements
Write a function that takes an array of integers (Both Positive and negative) and return the maximum sum of non adjacent elements. Note that even if all values are negative, I don't have an option to ...
- 185
3
votes
2
answers
833
views
Optimal burger-eating challenge
Little history to give context to the problem:
The Krusty-Burgers
Homer Simpson is a smart guy who likes to eat Krusty-Burgers, and it takes m minutes for Homer ...
- 401
3
votes
1
answer
10k
views
Solving maze problem with backtracking solution using stack
I solved the maze backtracking question using a stack however could not find any other solution like that anywhere (to validate my solution is actually a valid one).
The problem statement is as ...
- 143
4
votes
2
answers
3k
views
Optimal matrix chain multiplication in Java
Preliminaries
Given two matrices
$$
A = \begin{pmatrix}
a_{11} & a_{12} & \dots & a_{1q} \\
a_{21} & a_{22} & \dots & a_{2q} \\
\vdots & \vdots & \ddots & \vdots \\
...
- 30.3k
12
votes
5
answers
7k
views
Dynamic programming with Fibonacci
I have written the following code using a dynamic programming technique. Can I use ArrayList here? Please let me know if I can improve this code.
...
- 665
2
votes
2
answers
85
views
(Java) Read .txt and organize activities for hours / minutes
Doubts in logic to generate the output file according to the example
I need that even if he reaches the total_min <720 condition he continues to travel the lines. 720 is the total number of minutes ...
- 123
3
votes
2
answers
4k
views
"What is the fastest solution for finding the maximum sum of a subarray?"
Question
Given an array, find the longest continuous sub-array which has maximum sum.
My Approach
First, I solved this problem using dynamic programming which effectively solved the problem in \$O(...
- 303
3
votes
2
answers
921
views
Memoized solution to Count number of ways to climb n steps
Problem statement : A Child is climbing up n steps with either 1 , 2, 3 hops ..how many ways can the child climb up the stairs?
source: cracking the coding interview book.
I have two solutions the ...
- 501