All Questions
Tagged with programming-challenge c#
17 questions with no upvoted or accepted answers
3
votes
0
answers
311
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 ...
- 5,253
3
votes
0
answers
230
views
Longest palindrome code in C# takes time out on LeetCode
I like to request a review of the code below, which is my attempt at answering the question here on LeetCode site. The code passes 43 tests, but it times out on the next one. I copied and ran the test ...
- 103
3
votes
0
answers
787
views
Hackerrank: Sherlock and anagram (optimal time complexity)
Problem statement
Given a string \$S\$, find the number of "unordered anagrammatic pairs" of substrings.
Input Format
First line contains \$T\$, the number of testcases. Each testcase ...
- 2,396
3
votes
0
answers
680
views
Hackerearth Simple Function - Follow-up
Problem statement
Let us first describe a SimpleFunction:
...
- 2,396
3
votes
0
answers
1k
views
Solving the Mining algorithm from HackerRank
I was working on this problem for a few hours last night and finally came up with a brute-force solution. The task is to report the minimum work necessary (sum of weight × distance) to relocate gold ...
- 31
3
votes
0
answers
410
views
CodeEval - Lucky Tickets challenge
This a solution to the CodeEval's challenge "Lucky Tickets".
After a failed attempt with brute-force calculations (no surprise here), I have tried to implement an algorithm that I found on ...
- 131
2
votes
0
answers
646
views
LeetCode: trapping rain water C#
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.
The above elevation map is represented by array [...
- 5,253
2
votes
0
answers
920
views
Frog Jump time complexity
I have tried to work out the Frog Jump task on Codility. The algorithm for solving this is rather simple but the maximum score I am able to achieve is 55% (also 44% with modulus operations).
A ...
- 199
2
votes
0
answers
610
views
Leetcode 10: Regular Expression Matching
Problem statement
Implement regular expression matching with support for '.' and '*'.
'.' Matches any single character.
'*' Matches zero or more of the preceding element.
The matching ...
- 2,396
2
votes
0
answers
286
views
Learn trie through Leetcode 212
Problem statement:
Given a 2D board and a list of words from the dictionary, find all words in the board.
Each word must be constructed from letters of sequentially adjacent cell, where "...
- 2,396
2
votes
0
answers
3k
views
Hackerrank: Max Score
Problem statement
Consider an n-element sequence of integers, A = {a0, a0, ..., an-1}. We want to perform \$n\$ operations on \$A\$, where each operation is defined by the following sequence of ...
- 2,396
2
votes
0
answers
2k
views
Leetcode 317: Shortest distance from all buildings
Problem statement:
You want to build a house on an empty land which reaches all buildings in the shortest amount of distance. You can only move up, down, left and right. You are given a ...
- 2,396
2
votes
0
answers
564
views
HackerRank university codesprint array construction
Problem statement
Professor GukiZ has hobby — constructing different arrays. His best
student, Nenad, gave him the following task that he just can't manage
to solve:
Construct an \$n\$-...
- 2,396
2
votes
0
answers
2k
views
HackerRank - Matrix Rotation
Problem statement
Given a matrix (up to 300 × 300), rotate each element R steps anti-clockwise along concentric rectangular paths (R up to 109).
The algorithm is rated as hard on HackerRank.
On ...
- 2,396
2
votes
1
answer
272
views
LeetCode: House Robber II C#
https://leetcode.com/problems/house-robber-ii/
You are a professional robber planning to rob houses along a street.
Each house has a certain amount of money stashed. All houses at this
place ...
- 5,253
1
vote
0
answers
302
views
LeetCode:MineSweeper C#
https://leetcode.com/problems/minesweeper/
please review for performance. I really don't like the implementation I made for GetNumberOfMines() function, but within the time limits i did this. it is ...
- 5,253
1
vote
0
answers
894
views
Hackerrank > Woman's CodeSprint 2 > stone division, Revisited ( recursive function)
Problem statement
You have a pile of n stones that you want to split into multiple piles, as well as a set, S, of ...
- 2,396