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3 votes
1 answer
64 views

Coding puzzle - Passing year books

Question: There are n students, numbered from 1 to n, each with their own yearbook. They would like to pass their yearbooks around and get them signed by other students. You're given a list of n ...
Hariharasudhan Gunasekaran's user avatar
2 votes
1 answer
147 views

Advent of Code 2023 Day 2 in C#

To paraphrase the puzzle, Santa takes a walk with an Elf, and they play a game involving a bag of colorful cubes. In each game, there is an unknown number of each colored cubes in the bag, and the Elf ...
Natecat's user avatar
  • 123
1 vote
0 answers
119 views

Modified PoC for BlogEngine.NET CMS (CVE-2019-6714)

This is a modified exploit proof of concept targeting the BlogEngine.NET content management system (CVE-2019-6714) for the .NET framework. I modified it (from Cobb 2019) to execute payloads via ...
Aleksey's user avatar
  • 173
0 votes
2 answers
422 views

LeetCode: C# fibonacci number iterative solution

https://leetcode.com/problems/fibonacci-number/ The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones,...
Gilad's user avatar
  • 5,321
0 votes
1 answer
120 views

Distribute items over array in order to minimize the difference between min and max array values

I came across this problem in a programming challenge a few days ago. I came up with the implementation below, however it resulted in a "time limit exceeded" failure for a few of the test ...
Jeff Camera's user avatar
1 vote
1 answer
2k views

HackerRank CountingSort 1 in C#

Comparison Sorting Quicksort usually has a running time of n x log(n), but is there an algorithm that can sort even faster? In general, this is not possible. Most sorting algorithms are comparison ...
wayne.blackmon's user avatar
4 votes
1 answer
824 views

Kattis challenge, processing string with special characters and conditions

I'm new to programming challenges and I'm attempting the following Kattis challenge Sim. This problem is an extension of another Kattis problem - backspace. In that problem, every time we see a ...
kevin miranda's user avatar
4 votes
1 answer
850 views

Determine whether an array contains duplicate values

My solution for the leet code problem to search an array of ints for duplicate values and return a boolean seems quite efficient (< 90% of submissions runtime). However, I am currently reviewing ...
d0rf47's user avatar
  • 143
1 vote
2 answers
121 views

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 ...
Akshay Gupta's user avatar
1 vote
0 answers
64 views

LeetCode: range sum query mutable c#

https://leetcode.com/problems/range-sum-query-mutable/ I am trying to solve this question using dynamic programming. I guess the guys in leetcode want to limit us to use segment tree or one of the ...
Gilad's user avatar
  • 5,321
0 votes
1 answer
258 views

LeetCode: Sort The Matrix Diagonally C#

https://leetcode.com/problems/sort-the-matrix-diagonally/ A matrix diagonal is a diagonal line of cells starting from some cell in either the topmost row or leftmost column and going in the bottom-...
Gilad's user avatar
  • 5,321
4 votes
2 answers
267 views

Minimum number of copies of an application a company needs to purchase

Some applications from vendors are allowed to be installed on multiple computers per user with specific restrictions. In our scenario, each copy of the application (ID 374) allows the user to install ...
bit's user avatar
  • 143
3 votes
0 answers
309 views

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 ...
Gilad's user avatar
  • 5,321
2 votes
1 answer
2k views

DateTime range splitting algorithm

I have the algorithm which splits DateTime range into multiple ranges based on night time range. For example: Night start: 22:00, Night end: 06:00 Start time: 2020-10-26 21:00:00 End time: 2020-10-27 ...
Konrad's user avatar
  • 227
5 votes
4 answers
2k views

C#: Repeated String

From HackerRank "Repeated String" challenge: Lilah has a string, \$s\$, of lowercase English letters that she repeated infinitely many times. Given an integer, \$n\$, find and print the ...
wayne.blackmon's user avatar

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