All Questions
11 questions
3votes
1answer
272views
Array rotation in C++
I am completely new to data structures and algorithms. I tried this problem on hackerank. I got the desired output but my code wasn't efficient enough to execute in the given time limit. How can I ...
- 153
2votes
1answer
977views
Count number of previous elements greater than its element at present index
Suppose I have a vector containing n elements. I want to find out the number of previous elements greater than its element at present index i. I want to find ...
- 21
3votes
2answers
475views
2D array inquiries
I am trying to solve a problem as described below: You are given an input of a n*m forest. You have to answer a group of inquiries. Your task is to return the number of trees for every ...
- 175
3votes
4answers
3kviews
Rearranging an array such that positive and negative elements are at alternate positions
We are given an array in which we have equal number of positive and negative elements. We have to rearrange this array such that all positive and negative elements are at alternate positions and ...
2votes
2answers
3kviews
Swift HackerRank Missing Numbers Challenge
I'm attempting to solve the "Missing Numbers" challenge on HackerRank where I'm tasked with finding missing elements comparing two arrays. Foundation's ...
- 196
5votes
1answer
2kviews
C program circular array rotation
I'm trying to solve a Hackerrank problem where you perform karray[n] rotations, and at the end, ask for ...
- 53
3votes
4answers
5kviews
Circular array rotation Java
I have a solution to the HackerRank Circular Array Rotation challenge. It passes 7 test cases out of 15. The rest of them are getting timed out. I think it's because of the huge data set that has ...
1vote
3answers
103views
Finding the nth machine encountered on the journey
Recently I came across this problem in the IARCS server,here is an little excerpt from it, A well-known bandit who used to haunt the forests around Siruseri was eliminated by the policemen a few ...
- 409
0votes
1answer
115views
Recovering permutation from its image sequence
Recently while practicing I came across this problem , here is an excerpt from it, A permutation of the numbers 1, ..., N is a rearrangment of these numbers. For example 2 4 5 1 7 6 3 ...
- 409
7votes
4answers
1kviews
Code for calculating citizens beheaded
Recently I came across this problem , A despotic king decided that his kingdom needed to be rid of corruption and disparity. He called his prime minister and ordered that all corrupt citizens be ...
- 409
3votes
1answer
634views
Painting Tom Sawyer's Fence - programming on Free Pascal
Tom Sawyer has many friends who paints his fence. Each friend painted contiguous part of the fence. Some planks could stay unpainted, some could be painted several times. Program must output the ...
