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TitleDifficultyVideosCompanies
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
Contains Duplicate 4 - Check if array contains duplicates given ranged arrayeasy-
Determine if a string has all unique charactersmedium-
Duplicate each node in a binary search tree and add as its left childeasy-
Find All Elements Appearing More Than Size by k Times in Arraymedium-
Find distinct elements common to all rows of a matrixmedium-
Find duplicate number in array with 1 to N+1 numbers with one number repeatingeasy-
Find duplicates in a given arrayeasy-
Find duplicates in an array of integers within range 0 to n-1medium-
Find element which appears maximum number of times in the ranged arraymedium-
Find Even Occurring Elementeasy-
Find first duplicate number in an array containing numbers from 1 to nmedium-
Find frequency of a word in a bookeasy-
Find largest 1M numbers in 1B numbershard-
Find most frequent element in the arrayeasy-
Find two repeating elements in a given ranged 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 element in an arrayeasy-
Longest Substring Without Repeating Charactersmedium
adobealationalibaba
Valid Parentheseseasy
adobeairbnbakuna-capital
Kth Unique Character in a Stringmedium-
Last Duplicate Character in a Stringeasy-
Last Unique Character in a Stringeasy-
Longest Substring with K Distinct Charactersmedium-
google
Number of unique elements in sorted array with repeated elementseasy-
Nuts and Bolts Problem OR Lock and Keymedium-
Rearrange array to alternate positive and negative elementsmedium-
Rearrange array to match each index with element valuemedium-
Rearrange positive and negative numbers in an array without changing their ordermedium-
Remove duplicate characters in a stringmedium-
Remove duplicate in Binary Search Tree BSTmedium-
Remove duplicates from an unsorted linked list keeping only one instanceeasy-
Remove duplicates from unsorted arrayeasy-
Sort Array - Odds Ascending and Before Evens Descendingeasy-
Sort Names by their Last Nameseasy-
Sort Three Numbers Without Conditionalseasy-
Remove duplicates from Sorted Array 1easy
adobeamazonapple
Remove Elementeasy
amazonbloomberggoogle
Search in Rotated Sorted Arraymedium
adobealibabaamazon
Find first and last positions of target element in sorted arraymedium-
airbnbamazonapple
Search Insert Position in sorted arrayeasy-
adobeamazonapple
Permutations of Array 2 - Array has duplicatesmedium-
adobeamazonapple
Remove duplicates from Sorted Array 2medium-
amazonfacebookgoogle
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