All Problems

102 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)
All Topics(4301)Algorithms(3944)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)

Filter by Difficulty:

EasyMediumHard

Tag:

Company:

Active filters:Tag: array-algo×
TitleDifficultyVideosCompanies
2Sum - 0 - closest - Find two elements whose sum is closest to zeromedium-
Check if an Array of Integers is Sortedeasy-
Check if Array Contains All Elements Of Some Given Rangeeasy-
Check if Array is Consecutive Integersmedium-
Check if Array is Consecutive Positive Integerseasy-
Check if Duplicates Exist Within K Manhattan Distance in Matrixmedium-
Check if given string is palindrome or noteasy
Check if postordered array forms a binary search treemedium-
Construct reverse sum hierarchy triangle from an arraymedium-
Contains Duplicate 4 - Check if array contains duplicates given ranged arrayeasy-
Count frequency of target element in sorted arraymedium-
Count reverse pairs in two individually sorted parts of an arraymedium-
Find All Elements Appearing More Than Size by k Times in Arraymedium-
Find duplicate number in array with 1 to N+1 numbers with one number repeatingeasy-
Find duplicates in an array of integers within range 0 to n-1medium-
Find Even Occurring Elementeasy-
Find first duplicate number in an array containing numbers from 1 to nmedium-
Find First Intersection Point Between Two Sorted Arrayseasy-
Find Largest element in arrayeasy-
Find largest three elements in an arrayeasy-
Find local minimum or maximum in O(1) time in an array with elements differing by plus minus 1medium-
Find longest Snake sequence in a given matrixmedium-
Find most frequent element in the arrayeasy-
Find Second largest element in an arrayeasy-
Find smallest and second smallest elements in an arraymedium-
Find the median in a row-wise sorted 2D matrixmedium-
Find the smallest integer that cannot be represented as sum of any subset of sorted arraymedium-
Find the smallest subarray with a sum greater than a given integermedium-
Find two repeating elements in a given ranged arraymedium-
Finding N-th Smallest Sum from Two Sorted Arraysmedium-
microsoft
Finding the Critical Point in a Mountain or Valley-Shaped Arraymedium-
Finding the Maximum Distance Between Increasing Elements in an Arraymedium-
Finding the most frequent element in an array of numbers from 0 to n-1medium-
First Duplicate Character in a Stringeasy-
First duplicate element in an array by its indexeasy-
First Unique Character in a Stream of Charactersmedium-
amazongooglemicrosoft
First Unique element in an arrayeasy-
Fisher-Yates Shufflemedium-
facebook
Given an array count max number of surpassersmedium-
Two Sumeasy
adobeaetionaffirm
Longest Common Prefix in array of stringeasy-
adobealibabaamazon
3Sum - Closestmedium-
adobeamazonapple
4Summedium-
adobeamazonapple
Kth smallest absolute difference in arraymedium-
Kth Smallest Element in an Arraymedium-
Kth Smallest Element Using Randomized Selectionmedium-
Maximum and minimum sum subsequences at a distance greater than equal to Mmedium-
Maximum Difference between two elements in arrayeasy-
Maximum gain in a two-player game with picking elements from array endsmedium-
Maximum revenue by selling K tickets from N windowsmedium-
bloomberg
Showing 1 to 50 of 102 results
123Next