Questions tagged [time-limit-exceeded]

When the code scales so poorly in the face of large inputs that it cannot complete in a reasonable amount of time, use this instead of the [performance] tag.

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Largest prime factor function

I have written a function which finds the largest prime factor of some number. This function works but the problem is that it is too slow. For instance, when I enter 600851475143 as a parameter, the ...
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1answer
616 views

Dynamic Programming solution for one pile nim game

I have solved the following problem using dynamic programming: Little Deepu and his Girlfriend 1. To paraphrase, We have two players Little Deepu and Kate and M items in the bag B, also we have ...
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1answer
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Time complexity of tape equilibirum

As per the instructions on this Tape Equlibrium-Codility I've written the code ...
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1answer
109 views

Longest Collatz sequence in Scala

I am trying to find the longest Collatz Sequence: Which starting number, ≤ N, produces the longest chain? If many possible such numbers are there print the maximum one. (1 ≤ N ≤ 5×106) I tried ...
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Sort characters in a Python string by frequency

I wrote a solution to the leetcode problem Sort characters by frequency and the solution passes 34/35 test cases. On the last test case, there is a "time limit exceeded" error with an input string of ...
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1answer
228 views

CodeForces: Creating the Contest

I wrote a solution to this question. The task is to take an input of n increasing positive integers (1 ≤ n ≤ 2∙105), each entry as large as 109, and find the length of the longest subsequence where ...
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1answer
285 views

Prime pair set finder (Project Euler problem 60)

I made a code that can find the prime sets: The primes 3, 7, 109, and 673, are quite remarkable. By taking any two primes and concatenating them in any order the result will always be prime. For ...
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Hacker Rank Challenge : Find count of substrings which are special palindrome

I am getting timeout for test cases having very large input. -= Challenge Link =- -= Test case example =- Code is working fine as can be checked on ideone. (Note: Here ...
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2answers
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Project Euler Problem 21 in Python: Summing amicable numbers

Let d(n) be defined as the sum of proper divisors of n (numbers less than n which divide evenly into n). If d(a) = b and d(b) = a, where a ≠ b, then a and b are an amicable pair and each of a and b ...
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1answer
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Find the first palindrome larger than the given number

Question Input number of test cases. Input each test case and output its next palindrome number. Link: https://www.spoj.com/problems/PALIN/ Language Used: C++14 (gcc 6.3) My code ...
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1answer
107 views

Spoj-Prime Generator

Question- Generate all prime numbers between two given numbers. https://www.spoj.com/problems/PRIME1/ My attempt- I used segmented sieve method. ...
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2answers
651 views

Hacker rank - Left rotation - PHP code feedback for Timeout

Here is the problem description: https://www.hackerrank.com/challenges/ctci-array-left-rotation A left rotation operation on an array of size \$n\$ shifts each of the array's elements 1 unit to the ...
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1answer
64 views

Counting dinucletotide fractions & j2 index from a genome fasta file

I wrote this code to count the dinucletide fractions that appear in a genome (this is a sequence of two nucleotides, 'A','G','C','T', together). My code also calculates the j2 index (this is a very ...
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2answers
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CodeFights: Frisbees

Description You and your friends are seizing another summer day, passing around the frisbee in the park. You have the most fun when the game is fair, so as much as possible, you would all like to ...
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3answers
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Find smallest number of squares that sum to a number

Leetcode problem 279 “Perfect Squares” is: Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) I wrote the following solution: ...
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1answer
525 views

Project Euler Problem 1 with Python 3 ideal solution

I have been playing around in hacker rank with Python these days, and now pulling my hair out on this question to solve the Euler's problem in the least time required. If we list all the natural ...
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3answers
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Climbing the Leaderboard: HackerranK, Terminated due to timeout

I have implemented my solution and I thought it was pretty efficient and passes most of the cases but seems like it fails some of the test cases when the input size is very large. I basically push ...
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1answer
102 views

Get owner of ~5 million files and folders using Powershell and Robocopy

I've written a Powershell script that uses Robocopy to get the full path of all files on a drive and then run it through a foreach loop to get the owner for each file and generate it in a CSV. The ...
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2answers
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Counting pairs that have a given difference in Java

You will be given an integer k and a list of integers. Count the number of distinct valid pair of integers (a,b) in the list for which a+k=b. For example, the array [1,1,1,2] has two different ...
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Minimum swaps algorithm terminated due to timeout

I have been trying to solve this question. Given an unordered array consisting of consecutive integers [1, 2, 3, …, n], find the minimum number of two-element swaps to sort the array. I was able ...
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852 views

Blackjack strategy simulation

I'm very new to python (been coding for about two days) and have created a programme that simulates blackjack games so that I can work out optimal strategy over many iterations. The problem is that ...
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2answers
72 views

Forming all multiples of 3 using the given digits

I'm working on this kata from Codewars. The task is: Given a certain number, how many multiples of three could you obtain with its digits? Supose that you have the number 362. The numbers that ...
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351 views

Lattice path from Project Euler with Python solution

I was trying to solve this problem called lattice path from Project Euler: Count the number of unique paths to travel from the top left to the bottom right of a lattice of squares. How many such ...
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2answers
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Python function to find the next smaller number with same set of digits

Problem: Write a function that takes a positive integer and returns the next smaller positive integer containing the same digits. My solution: ...
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1answer
124 views

Finding intersting path in a graph

There is a question in a contest but it doesn't have any answer. I solve it but I get time limit for most of test case. Is it possible to improve my code or give a better approach? Question There is ...
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2answers
77 views

Replacing birth year column values with calculated age value

I have a stored procedure that is taking more than 2 hours to complete and I noticed the below SQL is taking close to 25 mins for updating a million+ values. There are multiple steps like this and ...
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3answers
341 views

Find k-distinct partitions which contain at least two perfect squares

Problem Statement: A k-distinct-partition of a number \$n\$ is a set of \$k\$ distinct positive integers that add up to \$n\$. For example, the 3-distinct partitions of 10 are \$1+2+7\$ \$...
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Master Locksmith

Description Master Locksmith has just finished the work of his life: a combination lock so big and complex that no one will ever open it without knowing the right combination. He's done testing ...
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9answers
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Find the repeated elements in a list

You are given an array of n+2 elements. All elements of the array are in range 1 to n. All elements occur once except two numbers, which occur twice. Your task is to find the two repeating numbers. ...
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3answers
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Counting ways to choose vertices that form a right triangle

Croatian Open Competition in Informatics, contest 3, December 8, 2007 4. DEJAVU \$N\$ points are placed in the coordinate plane. Write a program that calculates how many ways we can choose ...
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1answer
179 views

Counting out game with std::list

I recently tried to solve the Josephus Problem on Sphere Online to help answer this question but am getting TLE for any solution I come up with. The exact parameters of the problem are: This is ...
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0answers
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Quora upvotes trends Hackerrank challenge

The following code is my solution to an old problem I found today. Input Format Line 1: Two integers, N (1 ≤ N ≤ 106) and window size K (1 ≤ K ≤ N) Line 2: N positive integers of upvote ...
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1answer
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Google FooBar “Prepare The Bunnies Escape”

I'm currently working through the google FooBar challenge, and I'm on the third level, in which I have to find the distance between the top left and bottom right points on a grid. The grid is filled ...
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3answers
930 views

Aggregate prescriptions per drug in a CSV file

I have a question that is similar in spirit to this previously asked question. Nonetheless, I can't seem to figure out a suitable solution. Input: I have CSV data that looks like (FICTIONAL ...
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1answer
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Macro to clear cells that do not appear in a master list

The macro below clears cells that do not match any cell in comparison to a range (a master list). It works on small file but is too slow to work for files with large ranges. ...
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4answers
529 views

Summed absolute difference of two array

Question (SAD Queries on CodeChef) The Summed Absolute Difference (SAD) of two arrays. Given arrays (1-indexed) \$P\$ and \$Q\$ of lengths \$p\$ and \$q\$. Given a collection of \$n\$ arrays ...
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1answer
187 views

Project Euler #211: Divisor Square Sum

I started doing hackerrank problems only recently and here's my attempt to solve this problem. Basically, you're given two integers N and ...
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4answers
302 views

Find value that occurs in odd number of elements

I am trying to solve the following exercise using Javascript: A non-empty array A consisting of N integers is given. The array contains an odd number of elements, and each element of the array can be ...
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1answer
171 views

Facebook Challenge

PROBLEM The Facebook campus has N different attractions, numbered from 1 to N in decreasing order of popularity. The name of the ith attraction is Ai, a unique, non-empty string consisting of ...
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1answer
437 views

AGGRCOW on SPOJ – Maximize the minimum distance between aggressive cows

I am getting a TLE on my submission to AGGRCOW - Aggressive cows on SPOJ: Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight ...
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3answers
163 views

Writing many cells to sheet causes Excel to not respond, replacing vlookups [closed]

I have found that my code causes my Excel to 'not respond' when it gets to this for loop, For thisRow = 2 To lastWSrow(outWS). I'm guessing this is because I am ...
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1answer
50 views

Minimize array and output the remainder with respect to 1 second time limit

This is my code: ...
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1answer
346 views

Inefficient binary search? Hackerrank - Climbing the Leaderboard

I'm learning Golang and have been trying to get 100% on the following Hackerrank practice challenge: Climbing the Leaderboard The code passes ~8 of 11 tests. The Hackerrank tests are time-bound and ...
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3answers
1k views

The Next Palindromic number

I have incremented an integer in the function nextpalin() and converted it into a std::string for finding whether it's a ...
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1answer
81 views

Binary searching the turning point of a function

The problem You are given a list of \$ n \$ positive integers. Your task is to split the list into \$ k \$ subarrays so that the largest subarray sum is minimized. The input On the first line you ...
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3answers
569 views

C++ code to read, sort, and write data

I had written code in C++ to create transformation filters to get input, sort (custom_sorting and existing sorting routine) and write the output to stdin and file. When I presented it to my teacher, ...
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1answer
559 views
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136 views

Synchronizing Lists

I'm attempting to solve the problem "Synchronizing Lists" on Kattis.com. In a nutshell, the problem involves being given two lists: the lists are then to be sorted smallest-to-largest, ...
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1answer
129 views

Longest palindromes in a string

Honestly, I'm doing a practice and get blocked. Problem link. The problem is simple, given a string, calculate the number of max length palindromes (Any substring is valid, which means you can take ...

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