Interview Prep/Companies/Snowflake

Snowflake

90 questions tracked78 with solutions

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

Showing 90 of 90 questions

HardDesign In-Memory File System

100

Hash TableStringDesignTrie+1

LeetCode ↗48% acc.

EasyHappy Number✓ Our Solution

Hash TableMathTwo Pointers

LeetCode ↗58% acc.

HardMinimum Window Substring✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗45% acc.

MediumCourse Schedule II✓ Our Solution

Depth-First SearchBreadth-First SearchGraphTopological Sort

LeetCode ↗53% acc.

MediumFind All Anagrams in a String✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗52% acc.

HardWord Search II✓ Our Solution

ArrayStringBacktrackingTrie+1

LeetCode ↗37% acc.

HardString Transformation✓ Our Solution

MathStringDynamic ProgrammingString Matching

LeetCode ↗25% acc.

MediumStep-By-Step Directions From a Binary Tree Node to Another✓ Our Solution

StringTreeDepth-First SearchBinary Tree

LeetCode ↗56% acc.

EasyCalculate Amount Paid in Taxes✓ Our Solution

ArraySimulation

LeetCode ↗68% acc.

MediumMaximum Number of Upgradable Servers

ArrayMathBinary Search

LeetCode ↗41% acc.

HardTrapping Rain Water✓ Our Solution

ArrayTwo PointersDynamic ProgrammingStack+1

LeetCode ↗65% acc.

HardMaximum Profit in Job Scheduling✓ Our Solution

ArrayBinary SearchDynamic ProgrammingSorting

LeetCode ↗54% acc.

HardPainting the Walls✓ Our Solution

ArrayDynamic Programming

LeetCode ↗49% acc.

MediumMinimum Array Length After Pair Removals✓ Our Solution

ArrayHash TableTwo PointersBinary Search+2

LeetCode ↗25% acc.

HardNumber of Ways to Form a Target String Given a Dictionary✓ Our Solution

ArrayStringDynamic Programming

LeetCode ↗57% acc.

MediumFind the Maximum Length of a Good Subsequence I✓ Our Solution

ArrayHash TableDynamic Programming

LeetCode ↗32% acc.

HardParallel Courses III✓ Our Solution

ArrayDynamic ProgrammingGraphTopological Sort

LeetCode ↗67% acc.

HardFind the Maximum Length of a Good Subsequence II✓ Our Solution

ArrayHash TableDynamic Programming

LeetCode ↗24% acc.

HardBasic Calculator✓ Our Solution

MathStringStackRecursion

LeetCode ↗46% acc.

HardRegular Expression Matching✓ Our Solution

StringDynamic ProgrammingRecursion

LeetCode ↗29% acc.

MediumThrone Inheritance✓ Our Solution

Hash TableTreeDepth-First SearchDesign

LeetCode ↗65% acc.

EasyCount Vowel Substrings of a String✓ Our Solution

Hash TableString

LeetCode ↗71% acc.

MediumBoundary of Binary Tree

TreeDepth-First SearchBinary Tree

LeetCode ↗47% acc.

MediumDesign Hit Counter

ArrayBinary SearchDesignQueue+1

LeetCode ↗69% acc.

HardReverse Nodes in k-Group✓ Our Solution

Linked ListRecursion

LeetCode ↗63% acc.

MediumTime Based Key-Value Store✓ Our Solution

Hash TableStringBinary SearchDesign

LeetCode ↗49% acc.

EasyTwo Sum✓ Our Solution

ArrayHash Table

LeetCode ↗56% acc.

MediumPopulating Next Right Pointers in Each Node II✓ Our Solution

Linked ListTreeDepth-First SearchBreadth-First Search+1

LeetCode ↗56% acc.

EasyMerge Two Sorted Lists✓ Our Solution

Linked ListRecursion

LeetCode ↗67% acc.

MediumMax Area of Island✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗73% acc.

MediumPopulating Next Right Pointers in Each Node✓ Our Solution

Linked ListTreeDepth-First SearchBreadth-First Search+1

LeetCode ↗65% acc.

MediumCopy List with Random Pointer✓ Our Solution

Hash TableLinked List

LeetCode ↗61% acc.

MediumEncode and Decode Strings

ArrayStringDesign

LeetCode ↗50% acc.

MediumTask Scheduler✓ Our Solution

ArrayHash TableGreedySorting+2

LeetCode ↗62% acc.

MediumCourse Schedule✓ Our Solution

Depth-First SearchBreadth-First SearchGraphTopological Sort

LeetCode ↗49% acc.

EasyDesign HashMap✓ Our Solution

ArrayHash TableLinked ListDesign+1

LeetCode ↗66% acc.

HardSliding Window Median✓ Our Solution

ArrayHash TableSliding WindowHeap (Priority Queue)

LeetCode ↗39% acc.

MediumLRU Cache✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗45% acc.

HardMerge k Sorted Lists✓ Our Solution

Linked ListDivide and ConquerHeap (Priority Queue)Merge Sort

LeetCode ↗57% acc.

MediumMin Stack✓ Our Solution

StackDesign

LeetCode ↗56% acc.

MediumBasic Calculator II✓ Our Solution

MathStringStack

LeetCode ↗46% acc.

MediumSwap Nodes in Pairs✓ Our Solution

Linked ListRecursion

LeetCode ↗67% acc.

HardInteger to English Words✓ Our Solution

MathStringRecursion

LeetCode ↗34% acc.

HardPatching Array✓ Our Solution

ArrayGreedy

LeetCode ↗54% acc.

MediumGraph Valid Tree

Depth-First SearchBreadth-First SearchUnion FindGraph

LeetCode ↗49% acc.

HardCount Subarrays With Fixed Bounds✓ Our Solution

ArrayQueueSliding WindowMonotonic Queue

LeetCode ↗69% acc.

MediumRandom Pick with Weight✓ Our Solution

ArrayMathBinary SearchPrefix Sum+1

LeetCode ↗48% acc.

MediumImplement Trie (Prefix Tree)✓ Our Solution

Hash TableStringDesignTrie

LeetCode ↗68% acc.

MediumLongest Univalue Path✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗43% acc.

MediumMaximize Distance to Closest Person✓ Our Solution

Array

LeetCode ↗49% acc.

HardN-Queens II✓ Our Solution

Backtracking

LeetCode ↗77% acc.

MediumMerge Intervals✓ Our Solution

ArraySorting

LeetCode ↗49% acc.

MediumMaximum Profit From Trading Stocks

ArrayDynamic Programming

LeetCode ↗47% acc.

HardFind Median from Data Stream✓ Our Solution

Two PointersDesignSortingHeap (Priority Queue)+1

LeetCode ↗53% acc.

MediumRemove Sub-Folders from the Filesystem✓ Our Solution

ArrayStringDepth-First SearchTrie

LeetCode ↗76% acc.

MediumInsert Delete GetRandom O(1)✓ Our Solution

ArrayHash TableMathDesign+1

LeetCode ↗55% acc.

HardMinimum Operations to Make Numbers Non-positive

ArrayBinary Search

LeetCode ↗42% acc.

MediumContainer With Most Water✓ Our Solution

ArrayTwo PointersGreedy

LeetCode ↗58% acc.

MediumCheapest Flights Within K Stops✓ Our Solution

Dynamic ProgrammingDepth-First SearchBreadth-First SearchGraph+2

LeetCode ↗40% acc.

MediumRemove K Digits✓ Our Solution

StringStackGreedyMonotonic Stack

LeetCode ↗35% acc.

MediumCount Nodes Equal to Average of Subtree✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗86% acc.

MediumWalls and Gates

ArrayBreadth-First SearchMatrix

LeetCode ↗63% acc.

EasyBest Time to Buy and Sell Stock✓ Our Solution

ArrayDynamic Programming

LeetCode ↗55% acc.

MediumSimplify Path✓ Our Solution

StringStack

LeetCode ↗48% acc.

MediumParallel Courses

GraphTopological Sort

LeetCode ↗62% acc.

HardN-Queens✓ Our Solution

ArrayBacktracking

LeetCode ↗73% acc.

MediumSingle Element in a Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗59% acc.

EasyRoman to Integer✓ Our Solution

Hash TableMathString

LeetCode ↗65% acc.

MediumTop K Frequent Elements✓ Our Solution

ArrayHash TableDivide and ConquerSorting+4

LeetCode ↗65% acc.

MediumMaximum Number of Events That Can Be Attended✓ Our Solution

ArrayGreedySortingHeap (Priority Queue)

LeetCode ↗33% acc.

MediumPath With Minimum Effort✓ Our Solution

ArrayBinary SearchDepth-First SearchBreadth-First Search+3

LeetCode ↗61% acc.

MediumDesign Add and Search Words Data Structure✓ Our Solution

StringDepth-First SearchDesignTrie

LeetCode ↗47% acc.

HardMaking A Large Island✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗55% acc.

MediumNon-overlapping Intervals✓ Our Solution

ArrayDynamic ProgrammingGreedySorting

LeetCode ↗56% acc.

MediumMaximum Number of Removable Characters✓ Our Solution

ArrayTwo PointersStringBinary Search

LeetCode ↗46% acc.

EasyValid Word Abbreviation

Two PointersString

LeetCode ↗37% acc.

MediumSnapshot Array✓ Our Solution

ArrayHash TableBinary SearchDesign

LeetCode ↗37% acc.

MediumMost Profitable Path in a Tree✓ Our Solution

ArrayTreeDepth-First SearchBreadth-First Search+1

LeetCode ↗68% acc.

MediumLongest Substring Without Repeating Characters✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗37% acc.

MediumConstruct Binary Tree from Preorder and Inorder Traversal✓ Our Solution

ArrayHash TableDivide and ConquerTree+1

LeetCode ↗67% acc.

MediumWord Break✓ Our Solution

ArrayHash TableStringDynamic Programming+2

LeetCode ↗48% acc.

EasyLeaf-Similar Trees✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗70% acc.

HardRemove Invalid Parentheses✓ Our Solution

StringBacktrackingBreadth-First Search

LeetCode ↗49% acc.

MediumEvaluate Division✓ Our Solution

ArrayStringDepth-First SearchBreadth-First Search+3

LeetCode ↗63% acc.

MediumRange Sum Query 2D - Immutable✓ Our Solution

ArrayDesignMatrixPrefix Sum

LeetCode ↗57% acc.

MediumMeeting Rooms II

ArrayTwo PointersGreedySorting+2

LeetCode ↗52% acc.

HardCherry Pickup✓ Our Solution

ArrayDynamic ProgrammingMatrix

LeetCode ↗38% acc.

MediumNumber of Islands✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗62% acc.

MediumSwapping Nodes in a Linked List✓ Our Solution

Linked ListTwo Pointers

LeetCode ↗68% acc.

EasyReverse Only Letters✓ Our Solution

Two PointersString

LeetCode ↗67% acc.