Interview Prep/Companies/LinkedIn

100 questions tracked82 with solutions

🔍

Frequency scoreSorted highest → lowest frequency✓ Our Solution = we have a detailed walkthrough

Showing 100 of 100 questions

HardMax Stack

100

Linked ListStackDesignDoubly-Linked List+1

LeetCode ↗46% acc.

MediumNested List Weight Sum II

StackDepth-First SearchBreadth-First Search

LeetCode ↗66% acc.

HardAll O`one Data Structure✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗44% acc.

HardWord Ladder✓ Our Solution

Hash TableStringBreadth-First Search

LeetCode ↗43% acc.

MediumFind the Celebrity

Two PointersGraphInteractive

LeetCode ↗48% acc.

MediumNested List Weight Sum

Depth-First SearchBreadth-First Search

LeetCode ↗86% acc.

MediumShortest Word Distance II

ArrayHash TableTwo PointersString+1

LeetCode ↗62% acc.

MediumMaximum Subarray✓ Our Solution

ArrayDivide and ConquerDynamic Programming

LeetCode ↗52% acc.

MediumFind Leaves of Binary Tree

TreeDepth-First SearchBinary Tree

LeetCode ↗81% acc.

EasyValid Parentheses✓ Our Solution

StringStack

LeetCode ↗42% acc.

MediumNumber of Islands✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗62% acc.

MediumMaximum Product Subarray✓ Our Solution

ArrayDynamic Programming

LeetCode ↗35% acc.

EasyCan Place Flowers✓ Our Solution

ArrayGreedy

LeetCode ↗29% acc.

MediumSearch in Rotated Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗43% acc.

MediumPow(x, n)✓ Our Solution

MathRecursion

LeetCode ↗37% acc.

MediumBinary Tree Upside Down

TreeDepth-First SearchBinary Tree

LeetCode ↗65% acc.

MediumInsert Delete GetRandom O(1)✓ Our Solution

ArrayHash TableMathDesign+1

LeetCode ↗55% acc.

MediumPartition to K Equal Sum Subsets✓ Our Solution

ArrayDynamic ProgrammingBacktrackingBit Manipulation+2

LeetCode ↗38% acc.

MediumFind First and Last Position of Element in Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗47% acc.

MediumPaint House

ArrayDynamic Programming

LeetCode ↗64% acc.

HardSerialize and Deserialize Binary Tree✓ Our Solution

StringTreeDepth-First SearchBreadth-First Search+2

LeetCode ↗59% acc.

HardMinimum Window Substring✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗45% acc.

EasyMaximum Depth of Binary Tree✓ Our Solution

TreeDepth-First SearchBreadth-First SearchBinary Tree

LeetCode ↗77% acc.

MediumFactor Combinations

Backtracking

LeetCode ↗50% acc.

EasyShortest Word Distance

ArrayString

LeetCode ↗66% acc.

MediumExclusive Time of Functions✓ Our Solution

ArrayStack

LeetCode ↗65% acc.

MediumLowest Common Ancestor of a Binary Tree✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗67% acc.

MediumKth Largest Element in an Array✓ Our Solution

ArrayDivide and ConquerSortingHeap (Priority Queue)+1

LeetCode ↗68% acc.

MediumLetter Combinations of a Phone Number✓ Our Solution

Hash TableStringBacktracking

LeetCode ↗64% acc.

MediumLowest Common Ancestor of a Binary Search Tree✓ Our Solution

TreeDepth-First SearchBinary Search TreeBinary Tree

LeetCode ↗68% acc.

EasyIsomorphic Strings✓ Our Solution

Hash TableString

LeetCode ↗47% acc.

EasySymmetric Tree✓ Our Solution

TreeDepth-First SearchBreadth-First SearchBinary Tree

LeetCode ↗59% acc.

MediumSort Transformed Array

ArrayMathTwo PointersSorting

LeetCode ↗57% acc.

MediumMerge Intervals✓ Our Solution

ArraySorting

LeetCode ↗49% acc.

HardCount Integers in Intervals✓ Our Solution

DesignSegment TreeOrdered Set

LeetCode ↗34% acc.

EasyValid Perfect Square✓ Our Solution

MathBinary Search

LeetCode ↗44% acc.

HardValid Number✓ Our Solution

String

LeetCode ↗22% acc.

HardKth Smallest Product of Two Sorted Arrays✓ Our Solution

ArrayBinary Search

LeetCode ↗31% acc.

HardMax Points on a Line✓ Our Solution

ArrayHash TableMathGeometry

LeetCode ↗29% acc.

EasySecond Minimum Node In a Binary Tree✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗45% acc.

HardClosest Binary Search Tree Value II

Two PointersStackTreeDepth-First Search+3

LeetCode ↗60% acc.

MediumHouse Robber✓ Our Solution

ArrayDynamic Programming

LeetCode ↗52% acc.

MediumEvaluate Reverse Polish Notation✓ Our Solution

ArrayMathStack

LeetCode ↗55% acc.

MediumRepeated DNA Sequences✓ Our Solution

Hash TableStringBit ManipulationSliding Window+2

LeetCode ↗51% acc.

MediumLRU Cache✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗45% acc.

MediumBinary Tree Level Order Traversal✓ Our Solution

TreeBreadth-First SearchBinary Tree

LeetCode ↗71% acc.

MediumCan I Win✓ Our Solution

MathDynamic ProgrammingBit ManipulationMemoization+2

LeetCode ↗30% acc.

MediumLongest Palindromic Subsequence✓ Our Solution

StringDynamic Programming

LeetCode ↗64% acc.

MediumPermutations II✓ Our Solution

ArrayBacktrackingSorting

LeetCode ↗62% acc.

EasyMerge Two Sorted Lists✓ Our Solution

Linked ListRecursion

LeetCode ↗67% acc.

MediumFlatten Nested List Iterator✓ Our Solution

StackTreeDepth-First SearchDesign+2

LeetCode ↗65% acc.

MediumShortest Word Distance III

ArrayString

LeetCode ↗59% acc.

MediumPermutations✓ Our Solution

ArrayBacktracking

LeetCode ↗81% acc.

MediumPalindromic Substrings✓ Our Solution

Two PointersStringDynamic Programming

LeetCode ↗72% acc.

MediumSparse Matrix Multiplication

ArrayHash TableMatrix

LeetCode ↗69% acc.

MediumFind K Pairs with Smallest Sums✓ Our Solution

ArrayHeap (Priority Queue)

LeetCode ↗41% acc.

EasyTwo Sum✓ Our Solution

ArrayHash Table

LeetCode ↗56% acc.

MediumBinary Tree Zigzag Level Order Traversal✓ Our Solution

TreeBreadth-First SearchBinary Tree

LeetCode ↗62% acc.

HardMerge k Sorted Lists✓ Our Solution

Linked ListDivide and ConquerHeap (Priority Queue)Merge Sort

LeetCode ↗57% acc.

MediumProduct of Array Except Self✓ Our Solution

ArrayPrefix Sum

LeetCode ↗68% acc.

HardText Justification✓ Our Solution

ArrayStringSimulation

LeetCode ↗48% acc.

MediumFind K Closest Elements✓ Our Solution

ArrayTwo PointersBinary SearchSliding Window+2

LeetCode ↗49% acc.

MediumSum of Square Numbers✓ Our Solution

MathTwo PointersBinary Search

LeetCode ↗37% acc.

HardTime to Cross a Bridge✓ Our Solution

ArrayHeap (Priority Queue)Simulation

LeetCode ↗44% acc.

MediumMaximize Total Tastiness of Purchased Fruits

ArrayDynamic Programming

LeetCode ↗64% acc.

MediumFind Largest Value in Each Tree Row✓ Our Solution

TreeDepth-First SearchBreadth-First SearchBinary Tree

LeetCode ↗66% acc.

HardMaximum Number of Non-overlapping Palindrome Substrings✓ Our Solution

Two PointersStringDynamic ProgrammingGreedy

LeetCode ↗42% acc.

MediumInsert Interval✓ Our Solution

Array

LeetCode ↗43% acc.

HardMinimum Deletions to Make Array Divisible✓ Our Solution

ArrayMathSortingHeap (Priority Queue)+1

LeetCode ↗58% acc.

HardInsert Delete GetRandom O(1) - Duplicates allowed✓ Our Solution

ArrayHash TableMathDesign+1

LeetCode ↗36% acc.

EasyTwo Sum III - Data structure design

ArrayHash TableTwo PointersDesign+1

LeetCode ↗39% acc.

MediumCreate Binary Tree From Descriptions✓ Our Solution

ArrayHash TableTreeBinary Tree

LeetCode ↗82% acc.

MediumBinary Search Tree Iterator✓ Our Solution

StackTreeDesignBinary Search Tree+2

LeetCode ↗75% acc.

MediumMax Area of Island✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗73% acc.

MediumEdit Distance✓ Our Solution

StringDynamic Programming

LeetCode ↗59% acc.

MediumRotate List✓ Our Solution

Linked ListTwo Pointers

LeetCode ↗40% acc.

MediumGraph Valid Tree

Depth-First SearchBreadth-First SearchUnion FindGraph

LeetCode ↗49% acc.

MediumValid Triangle Number✓ Our Solution

ArrayTwo PointersBinary SearchGreedy+1

LeetCode ↗52% acc.

MediumNumber of Connected Components in an Undirected Graph

Depth-First SearchBreadth-First SearchUnion FindGraph

LeetCode ↗64% acc.

MediumMin Stack✓ Our Solution

StackDesign

LeetCode ↗56% acc.

MediumShuffle an Array✓ Our Solution

ArrayMathDesignRandomized

LeetCode ↗59% acc.

HardWord Ladder II✓ Our Solution

Hash TableStringBacktrackingBreadth-First Search

LeetCode ↗27% acc.

MediumCombination Sum✓ Our Solution

ArrayBacktracking

LeetCode ↗75% acc.

EasyMerge Sorted Array✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗53% acc.

MediumLongest Palindromic Substring✓ Our Solution

Two PointersStringDynamic Programming

LeetCode ↗36% acc.

MediumInteger to Roman✓ Our Solution

Hash TableMathString

LeetCode ↗69% acc.

EasyIntersection of Two Arrays✓ Our Solution

ArrayHash TableTwo PointersBinary Search+1

LeetCode ↗76% acc.

EasyFizz Buzz✓ Our Solution

MathStringSimulation

LeetCode ↗74% acc.

EasyDiameter of Binary Tree✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗64% acc.

EasySame Tree✓ Our Solution

TreeDepth-First SearchBreadth-First SearchBinary Tree

LeetCode ↗65% acc.

MediumHouse Robber IV✓ Our Solution

ArrayBinary SearchDynamic ProgrammingGreedy

LeetCode ↗65% acc.

MediumLongest Substring Without Repeating Characters✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗37% acc.

HardMedian of Two Sorted Arrays✓ Our Solution

ArrayBinary SearchDivide and Conquer

LeetCode ↗44% acc.

MediumHouse Robber II✓ Our Solution

ArrayDynamic Programming

LeetCode ↗44% acc.

MediumNext Permutation✓ Our Solution

ArrayTwo Pointers

LeetCode ↗43% acc.

MediumReorder List✓ Our Solution

Linked ListTwo PointersStackRecursion

LeetCode ↗63% acc.

EasyMinimum Time to Type Word Using Special Typewriter✓ Our Solution

StringGreedy

LeetCode ↗78% acc.

MediumDesign Add and Search Words Data Structure✓ Our Solution

StringDepth-First SearchDesignTrie

LeetCode ↗47% acc.

EasyBest Time to Buy and Sell Stock✓ Our Solution

ArrayDynamic Programming

LeetCode ↗55% acc.

100

MediumValidate Binary Search Tree✓ Our Solution

TreeDepth-First SearchBinary Search TreeBinary Tree

LeetCode ↗34% acc.