| Ramp |
Spreadsheet String Concatenation with Dependent Cells |
Hard |
🔥 Sep 18, 2026 |
| Citadel |
Design a Top-Ten Trade Query with Exact Amounts |
Medium |
🔥 Sep 18, 2026 |
| Instacart |
Debug Search and Stock Behavior in a Library Application |
Medium |
🔥 Sep 18, 2026 |
| Houzz |
Convert a Column Number to an Excel-Style Label |
Easy |
🔥 Sep 18, 2026 |
| Instacart |
Calculate Inventory Purchases with Buy-X-Get-Y-Free Coupons |
Medium |
🔥 Sep 18, 2026 |
| Ziphq |
Find the Guaranteed Capture Time in a Turn-Based Graph Game |
Hard |
🔥 Sep 17, 2026 |
| Together AI |
Split a Chunked Text Stream into Line-Balanced Parts |
Medium |
🆕 Sep 15, 2026 |
| xAI |
Load and Display a React List with useEffect |
Medium |
🆕 Sep 15, 2026 |
| xAI |
Implement an Asynchronous React Typeahead |
Medium |
🆕 Sep 15, 2026 |
| Cohere |
Implement a Card-Details Form with Dependent Validation |
Medium |
🆕 Sep 15, 2026 |
| Amazon |
Search a Folder Hierarchy with Extensible Document Filters |
Medium |
🆕 Sep 14, 2026 |
| Amazon |
Order Dependent Tasks and Identify Work to Rerun |
Medium |
🆕 Sep 14, 2026 |
| Amazon |
Merge Sorted Event Streams Through an Iterator |
Medium |
🆕 Sep 14, 2026 |
| AMD |
Find the Largest K Elements with Partitioning |
Medium |
🆕 Sep 14, 2026 |
| Voleon |
Audit and Extend a Time-Series ML Pipeline |
Hard |
🆕 Sep 14, 2026 |
| IBM |
VM Rental Revenue from Changing Stock |
Medium |
🆕 Sep 14, 2026 |
| Rippling |
Bill Deliveries with Historical Rates and Deferred Rounding |
Hard |
🆕 Sep 13, 2026 |
| Oracle |
Count Islands and Return the Largest Island Size |
Medium |
🆕 Sep 11, 2026 |
| Stripe |
Financial Account Ledger |
Hard |
🆕 Sep 11, 2026 |
| Stripe |
Hierarchical CSV Task / Subtask Formatter |
Medium |
🆕 Sep 11, 2026 |
| Wayfair |
Simulate and Compare Multi-Armed Bandit Strategies |
Hard |
🆕 Sep 10, 2026 |
| Microsoft |
Find Unique Zero-Sum Triplets |
Medium |
🆕 Sep 10, 2026 |
| Microsoft |
Find the First Value Repeated During a Left-to-Right Scan |
Easy |
🆕 Sep 10, 2026 |
| Google |
Temperature Monitoring Data Structure |
Medium |
🆕 Sep 10, 2026 |
| Uber |
Sort a Matrix into Snake Order Using Adjacent Swaps |
Medium |
🆕 Sep 09, 2026 |
| Snapchat |
Render an Organization Chart and Find Skip-Level Pairs |
Medium |
🆕 Sep 09, 2026 |
| Uber |
Answer Repeated Shortest Increasing-Path Queries |
Hard |
🆕 Sep 09, 2026 |
| Roblox |
File Chunk Range Tracking |
Medium |
🆕 Sep 09, 2026 |
| Microsoft |
Delete and Earn (LC 740) |
Medium |
🆕 Sep 09, 2026 |
| Google |
Minimum-Cost Tree Disconnection |
Hard |
🆕 Sep 09, 2026 |
| Capital One |
Find Repeated-Value Patterns in a Matrix |
Medium |
🆕 Sep 07, 2026 |
| Databricks |
Tic-Tac-Toe Against a Deterministic Automatic Opponent |
Hard |
🆕 Sep 06, 2026 |
| Databricks |
Referral Credit Tracker with Indirect Referrals |
Hard |
🆕 Sep 06, 2026 |
| Amazon |
Timestamped Key-Value Store |
Easy |
🆕 Sep 05, 2026 |
| LinkedIn |
Nested List Weight Sum II (LC 364) |
Medium |
🆕 Sep 04, 2026 |
| Stripe |
Subtract Blocked Periods from Allowed Deployment Windows |
Medium |
🆕 Sep 04, 2026 |
| ByteDance |
Restore IP Addresses |
Medium |
🆕 Sep 04, 2026 |
| Amazon |
Binary Array Rearrangement |
Medium |
🆕 Sep 02, 2026 |
| Google |
Next-Word Predictor |
Medium |
🆕 Sep 02, 2026 |
| Harvey |
Allocate Unique File Names in an In-Memory Vault |
Medium |
🆕 Sep 01, 2026 |
| Amazon |
NumPy Mean and Variance with MLE Follow-Up |
Medium |
🆕 Sep 01, 2026 |
| Amazon |
Maximum Frequency Stack |
Hard |
🆕 Sep 01, 2026 |
| Amazon |
Top K Frequent Elements (LC 347) with a Follow-Up Variant |
Hard |
🆕 Sep 01, 2026 |
| Microsoft |
Recover Sorted Digits from Scrambled English Number Words |
Medium |
🆕 Aug 30, 2026 |
| Microsoft |
Parse a Signed Integer in an Arbitrary Base |
Medium |
🆕 Aug 30, 2026 |
| Microsoft |
Keep Stable Unique Column Names Across Schema Changes |
Hard |
🆕 Aug 30, 2026 |
| Microsoft |
Convert a Hexadecimal Address to Dotted IPv4 |
Medium |
🆕 Aug 30, 2026 |
| Amazon |
Delivery-Center Grid — Minimum Inconvenience |
Hard |
🆕 Aug 30, 2026 |
| Oracle |
Accounts Merge (LC 721) |
Hard |
🆕 Aug 28, 2026 |
| Capital One |
NYC Green Taxi Data Science Challenge |
Medium |
🆕 Aug 28, 2026 |
| LinkedIn |
Merge N-ary Trees by Node Key |
Medium |
🆕 Aug 27, 2026 |
| IBM |
Minimum Replacements for Adjacent Duplicate Characters |
Medium |
🆕 Aug 27, 2026 |
| Pinterest |
Tree-Encoded Subtree Deletion and Stable Compaction |
Hard |
🆕 Aug 26, 2026 |
| Apple |
Sparse Matrix Multiplication (LC 311) |
Medium |
🆕 Aug 26, 2026 |
| LinkedIn |
Logistic Regression Debugging |
Hard |
🆕 Aug 24, 2026 |
| Salesforce |
Minimum One-Character Word Transformations |
Hard |
🆕 Aug 24, 2026 |
| Salesforce |
Find the Celebrity |
Medium |
🆕 Aug 24, 2026 |
| Stripe |
Deployment Window Scheduler |
Hard |
🆕 Aug 24, 2026 |
| Amazon |
Package Weight Rearrangement |
Medium |
🆕 Aug 24, 2026 |
| Amazon |
Numbered Buttons with Data Popovers |
Medium |
🆕 Aug 22, 2026 |
| Amazon |
Print Hierarchical Comments |
Medium |
🆕 Aug 22, 2026 |
| Amazon |
Package Tracking & Status Aggregator Engine |
Medium |
🆕 Aug 21, 2026 |
| Amazon |
Minimum-Point Redemption Across Programs |
Hard |
🆕 Aug 21, 2026 |
| ByteDance / Ebay / NVIDIA |
Search in Rotated Sorted Array |
Medium |
🆕 Aug 21, 2026 |
| ByteDance |
Timestamped Task Scheduler |
Medium |
🆕 Aug 20, 2026 |
| LinkedIn |
Robot Navigation in an Unknown Grid |
Hard |
🆕 Aug 18, 2026 |
| Roblox |
Piano Keys: Vanilla UI Interaction |
Easy |
🆕 Aug 17, 2026 |
| Amazon / ByteDance |
Create Binary Tree from Descriptions (LC 2196) |
Medium |
🆕 Aug 17, 2026 |
| ByteDance |
Stickers to Spell Word (LeetCode 691) |
Hard |
🆕 Aug 17, 2026 |
| ByteDance |
Pythagorean Triple in an Integer Array |
Medium |
🆕 Aug 17, 2026 |
| LinkedIn |
Count Distinct Values in a Massive Sorted Array |
Medium |
Aug 16, 2026 |
| LinkedIn |
Find K Closest Elements in a Sorted Array (LC 658) |
Medium |
Aug 16, 2026 |
| Salesforce |
Valid Word Abbreviation (LeetCode 408) with Follow-Up Variant |
Medium |
Aug 16, 2026 |
| Salesforce |
Lowest Common Ancestor with Parent Pointers (LeetCode 1650) |
Medium |
Aug 16, 2026 |
| Salesforce |
Kth Smallest in a BST (LeetCode 230) with Follow-Ups |
Hard |
Aug 16, 2026 |
| DoorDash |
Minimum Parenthesis Deletions |
Easy |
Aug 16, 2026 |
| DoorDash |
First Unique Restaurant in a Stream |
Medium |
Aug 16, 2026 |
| Apple |
Copy List with Random Pointer (LC 138) |
Medium |
Aug 16, 2026 |
| DoorDash |
Minimum Dasher Processing Speed |
Medium |
Aug 16, 2026 |
| Uber |
K Closest Points |
Medium |
Aug 16, 2026 |
| Microsoft |
Spiral Matrix (LC 54) + Follow-Ups |
Medium |
Aug 16, 2026 |
| Microsoft |
Palindrome Linked List (LC 234) + Engineering Follow-Up |
Medium |
Aug 16, 2026 |
| Google |
Cutting Ribbons (LC 1891) |
Medium |
Aug 16, 2026 |
| Amazon |
Asteroid Collision (LC 735) |
Medium |
Aug 16, 2026 |
| Google |
Nested List Weight Sum (LC 339) with Follow-Ups |
Medium |
Aug 16, 2026 |
| Microsoft / LinkedIn |
Binary Tree Zigzag Level Order Traversal (LC 103) |
Medium |
Aug 16, 2026 |
| Snowflake |
React / TypeScript Kanban Board |
Medium |
Aug 15, 2026 |
| Citadel |
Task Dependency Ordering |
Medium |
Aug 15, 2026 |
| Microsoft |
Lowest Common Ancestor (LC 235) with a Follow-Up Variant |
Medium |
Aug 15, 2026 |
| Amazon |
Bootstrap Mean & Confidence Interval |
Medium |
Aug 14, 2026 |
| Amazon |
Out-of-Order Package Receiver |
Medium |
Aug 14, 2026 |
| Amazon |
Package Dependency Installation & Build Order |
Medium |
Aug 14, 2026 |
| Amazon |
Group Anagrams (LC 49) |
Medium |
Aug 14, 2026 |
| Google |
Target Expressions from Ordered Digits |
Hard |
Aug 13, 2026 |
| ByteDance / Bobyard |
Build a Nested Comment Tree from Flat Records |
Medium |
Aug 13, 2026 |
| Roblox |
Distinct Cyclic Number Pairs |
Medium |
Aug 12, 2026 |
| Affirm |
Find Redeemable Offers |
Hard |
Aug 12, 2026 |
| Figma |
Sort Documents on a 2D Plane |
Medium |
Aug 12, 2026 |
| Google |
Progressive Array Partitioning |
Hard |
Aug 11, 2026 |
| Microsoft |
Minimum Fuel Cost Across a Road Network |
Hard |
Aug 11, 2026 |
| Oracle |
Two-Value Exchange Warm-Up |
Easy |
Aug 10, 2026 |
| Oracle |
Run-Length String Compression |
Easy |
Aug 10, 2026 |
| Uber |
Minesweeper (LC 529) |
Medium |
Aug 10, 2026 |
| Harvey |
Citation Highlighting |
Hard |
Aug 09, 2026 |
| Affirm |
Aggregate Recent Transactions |
Medium |
Aug 07, 2026 |
| Citadel |
SRE Python Fundamentals — Five-Question Set |
Easy |
Aug 05, 2026 |
| Apple |
Top K Closest Pairs in a Sorted Array |
Hard |
Aug 05, 2026 |
| Figma |
Nested String with Brackets Parsing |
Hard |
Aug 04, 2026 |
| Affirm |
Live Fraud Detector |
Easy |
Aug 01, 2026 |
| OpenAI |
Sharded Matmul and Backprop Debugging |
Hard |
Jul 31, 2026 |
| Pinduoduo |
Spiral Matrix Generation |
Medium |
Jul 30, 2026 |
| ByteDance |
Bounded Number Construction from Allowed Digits |
Hard |
Jul 29, 2026 |
| Point72 |
Price Percentile Cutoff |
Medium |
Jul 29, 2026 |
| Point72 |
Optimal Stock Price Subsequence |
Hard |
Jul 29, 2026 |
| Point72 |
League Earnings |
Easy |
Jul 29, 2026 |
| Point72 |
Count Maximum Borrowing Days |
Hard |
Jul 29, 2026 |
| Point72 |
Coins and Energy |
Hard |
Jul 29, 2026 |
| Point72 / Akuna Capital / Google |
Array Frequency Sort |
Easy |
Jul 29, 2026 |
| Microsoft / Amazon / Apple / ByteDance / LinkedIn / Meta / Microsoft AI / Two Sigma / WeRide |
Top K Largest Elements |
Medium |
Jul 29, 2026 |
| Point72 |
Bank Transaction Mining |
Easy |
Jul 29, 2026 |
| Lyft |
Job Scheduler |
Hard |
Jul 29, 2026 |
| Microsoft AI / Microsoft |
Beam Search Decoding |
Hard |
Jul 29, 2026 |
| Apple |
Insert Interval (LC 57) |
Medium |
Jul 28, 2026 |
| Citadel |
Real-Time Trading Event Feed Dashboard (React) |
Hard |
Jul 27, 2026 |
| Apple |
Alias Group Mapping |
Medium |
Jul 27, 2026 |
| Salesforce |
Optimal Account Balancing (LeetCode 465) |
Hard |
Jul 25, 2026 |
| Salesforce |
Delete One Character Type, Minimize Unique-Character Segments |
Medium |
Jul 25, 2026 |
| Google |
Batch and Streaming Log Deduplication |
Hard |
Jul 23, 2026 |
| Amazon |
Word Segmentation with a Dictionary Helper |
Medium |
Jul 22, 2026 |
| Amazon |
Fulfillment-Center Inventory Transfer |
Medium |
Jul 22, 2026 |
| Amazon |
Handwrite Sigmoid, Softmax, and Attention |
Hard |
Jul 20, 2026 |
| Google |
Minimum Direction Violations in a Directed Graph |
Hard |
Jul 19, 2026 |
| Capital One |
W-D-L Outcome Reordering |
Easy |
Jul 19, 2026 |
| Capital One |
Outside-In String Reordering |
Easy |
Jul 19, 2026 |
| Salesforce |
Maximal Rectangle (LeetCode 85) |
Hard |
Jul 17, 2026 |
| Salesforce |
Maximal Square (LeetCode 221) |
Hard |
Jul 17, 2026 |
| Pinduoduo |
Count Longest Increasing Subsequences |
Hard |
Jul 17, 2026 |
| OpenAI |
Maximum Grid Jumping Path |
Hard |
Jul 16, 2026 |
| Vanta |
Task Dependency Resolution (Topological Sort) |
Medium |
Jul 16, 2026 |
| Vanta |
Implement uniq — Unique Lines in a File |
Medium |
Jul 16, 2026 |
| Amazon |
Edit Distance (LC 72) with a Follow-Up Variant |
Hard |
Jul 14, 2026 |
| Google |
Count Word Decompositions into Chemical Element Symbols |
Medium |
Jul 14, 2026 |
| Amazon |
Best Time to Buy & Sell Stock — Merged Variants |
Hard |
Jul 10, 2026 |
| Figma |
Resize Stacked Rectangles — Distribute Height |
Medium |
Jul 09, 2026 |
| Waymo |
Build an Arithmetic Expression to Reach a Target |
Hard |
Jul 09, 2026 |
| Walmart Labs |
Minimum Talent-Complete Team from Every Start |
Medium |
Jul 07, 2026 |
| Walmart Labs |
Merge Strings Alternately |
Easy |
Jul 07, 2026 |
| Waymo |
Race Car: Minimum Instructions to Reach a Target |
Hard |
Jul 06, 2026 |
| Goldman Sachs |
Highest Average Score Per Person |
Medium |
Jul 06, 2026 |
| SoFi |
Reachable Nodes in a Directed Graph |
Medium |
Jul 04, 2026 |
| Waymo |
Implement Max Pooling with Argmax Coordinates |
Medium |
Jul 02, 2026 |
| Amazon |
Basic Calculator with Postfix Notation |
Medium |
Jul 02, 2026 |
| Amazon |
Closest Version Date |
Medium |
Jul 02, 2026 |
| Google |
Top-K Frequent in Large Logs |
Medium |
Jul 02, 2026 |
| Amazon |
Maximum Concurrent Processes from Intervals |
Medium |
Jul 02, 2026 |
| Google |
Piano Hand Movement Grouping |
Medium |
Jul 01, 2026 |
| Amazon |
Service Shutdown / Topological Sort |
Medium |
Jul 01, 2026 |
| Meta |
Attention Implementation + Flash / Linear Attention Follow-ups |
Hard |
Jun 30, 2026 |
| Amazon |
Drone Delivery on a Hub Ring — Minimum Travel |
Medium |
Jun 30, 2026 |
| Lyft / ByteDance / Meta |
Minimum Window Substring |
Medium |
Jun 29, 2026 |
| Roblox |
Dependency Ordering With Topological Sort |
Hard |
Jun 29, 2026 |
| Databricks |
Find Optimal Commute |
Medium |
Jun 29, 2026 |
| Intuit |
Array Plus One with Large-Input Follow-Up |
Medium |
Jun 28, 2026 |
| Amazon |
Inventory Allocation by Bid Priority |
Medium |
Jun 28, 2026 |
| Apple / Amazon / Bloomberg / Meta / Uber |
Binary Tree Vertical Order Traversal |
Medium |
Jun 28, 2026 |
| Voleon |
Return Words in Repeated Anagram Groups |
Medium |
Jun 27, 2026 |
| Waymo |
Find Dictionary Words Represented by Repeated Letters |
Medium |
Jun 27, 2026 |
| Waymo |
Find a Repeating Vehicle Program Under Fuel and Memory Limits |
Hard |
Jun 27, 2026 |
| Amazon |
Org-Chart Salary Aggregation |
Medium |
Jun 27, 2026 |
| Amazon |
Find Conflicting Events |
Medium |
Jun 27, 2026 |
| Google |
Website Activity Analytics: Unique Users + Session Time |
Medium |
Jun 26, 2026 |
| Google |
2D Points Connected Components by Radius |
Medium |
Jun 26, 2026 |
| Amazon |
Domain Score Accumulation (Reverse Trie) |
Medium |
Jun 26, 2026 |
| Google |
Meeting Rooms / Interval Scheduling Variants |
Medium |
Jun 26, 2026 |
| ByteDance |
Elements Appearing More Than n/3 in a Sorted Array |
Medium |
Jun 26, 2026 |
| Airbnb |
Fill Layover With Experiences |
Hard |
Jun 26, 2026 |
| ByteDance |
Reverse Nodes in K-Group (incomplete tail variant) |
Medium |
Jun 25, 2026 |
| Okta |
Reverse Substrings Between Each Pair of Parentheses |
Medium |
Jun 24, 2026 |
| ByteDance |
Remove Duplicate Letters for Lexicographically Smallest Result |
Hard |
Jun 24, 2026 |
| Meta / ByteDance / Instacart / Uber |
Basic Calculator I / II |
Medium |
Jun 24, 2026 |
| Apple |
Frontend React Screen |
Hard |
Jun 24, 2026 |
| Snowflake |
Forest Parent Array Delete Node |
Medium |
Jun 24, 2026 |
| Snowflake |
Distributed Tree Node Count |
Hard |
Jun 24, 2026 |
| Stripe |
Six Degrees of Collusion |
Medium |
Jun 24, 2026 |
| JPMorgan |
Zero Compaction Array Coding |
Easy |
Jun 23, 2026 |
| JPMorgan |
Prerequisite Cycle |
Medium |
Jun 23, 2026 |
| JPMorgan |
Interval Consolidation |
Medium |
Jun 23, 2026 |
| Google |
Streaming Points: Emit K Within Distance |
Medium |
Jun 23, 2026 |
| Google |
Expression Tree Single-Leaf Mutation |
Hard |
Jun 23, 2026 |
| Google |
Active Communication Top Users |
Medium |
Jun 23, 2026 |
| Reddit |
Moderator List Hierarchy |
Medium |
Jun 23, 2026 |
| Salesforce |
Campaign Cost Weekly Partition |
Medium |
Jun 22, 2026 |
| Amazon |
Minimum Bills and Coins for an Amount |
Medium |
Jun 22, 2026 |
| Amazon |
Detect and Break a Linked-List Cycle |
Medium |
Jun 22, 2026 |
| Amazon |
Caesar Cipher with Case Preservation |
Easy |
Jun 22, 2026 |
| Amazon |
Minimum Operations to Sort by Rotate and Flip |
Medium |
Jun 19, 2026 |
| OpenAI |
Design Cluster Message Aggregation |
Hard |
Jun 19, 2026 |
| OpenAI / Anthropic |
Infection Spread Simulation |
Medium |
Jun 19, 2026 |
| Goldman Sachs |
Largest Tree in a Forest |
Medium |
Jun 18, 2026 |
| Meta |
Find Shortest Unique Prefix |
Medium |
Jun 18, 2026 |
| Applied Intuition |
Build a File-Driven Data Visualization and Replay UI |
Hard |
Jun 17, 2026 |
| ByteDance |
Longest Zigzag Path in a Grid |
Hard |
Jun 17, 2026 |
| Airbnb |
Chain Booking — Max Cascading Reservations |
Medium |
Jun 17, 2026 |
| Snowflake |
Reverse Alphanumeric Segments |
Medium |
Jun 17, 2026 |
| Snowflake |
Number Transformation Path |
Medium |
Jun 17, 2026 |
| Snowflake |
Calculate Amount Paid in Taxes |
Easy |
Jun 17, 2026 |
| Bloomberg / Amazon / ByteDance / Goldman Sachs / Pinduoduo |
Validate Binary Search Tree |
Medium |
Jun 16, 2026 |
| Bloomberg / ByteDance / Cisco |
Longest Palindromic Substring |
Medium |
Jun 16, 2026 |
| Pinterest |
Stack Items into the Shortest Column (Min-Heap Load Balancing) |
Medium |
Jun 16, 2026 |
| ByteDance / Amazon |
Number of Islands and Grid BFS Variants |
Hard |
Jun 16, 2026 |
| Apple / Scale AI |
Transformer Attention Mask and Heads Coding |
Hard |
Jun 16, 2026 |
| Uber / Meta |
Word Break |
Medium |
Jun 16, 2026 |
| Uber / Amazon / ByteDance |
Sliding Window Maximum |
Medium |
Jun 16, 2026 |
| Uber |
Rate Limiter (Coding + Trade-offs) |
Medium |
Jun 16, 2026 |
| Rippling / Bloomberg / ByteDance / Uber |
Median of Two Sorted Arrays |
Hard |
Jun 16, 2026 |
| Google |
First Bad Version with Parallel Search Follow-up |
Medium |
Jun 15, 2026 |
| Optiver |
Build Binary Tree from Edges / S-Expression |
Hard |
Jun 15, 2026 |
| Snowflake |
Rewrite Tree With Subtree Sums |
Medium |
Jun 15, 2026 |
| Scale AI |
Task Processor: Dependencies and Deadlines |
Hard |
Jun 14, 2026 |
| Citadel |
N-ary Tree Sum + Leaf next Pointer |
Hard |
Jun 13, 2026 |
| Whatnot |
Filter Unsafe Messages |
Medium |
Jun 12, 2026 |
| Ebay |
Obstacle Placement and Block Check |
Hard |
Jun 12, 2026 |
| Ebay |
Max Matrix Border Distinct Sum |
Medium |
Jun 12, 2026 |
| Ebay |
Match Cyclic Shift to Descending Sequence |
Easy |
Jun 12, 2026 |
| Ebay |
Group Chat Mention Counter |
Medium |
Jun 12, 2026 |
| Ebay |
Fit Saved Rectangles in a Box |
Medium |
Jun 12, 2026 |
| Ebay |
Find Matching Skeletons |
Medium |
Jun 12, 2026 |
| Ebay |
Count and Flip Binary Operations |
Medium |
Jun 12, 2026 |
| Reddit |
Pseudo-Memcached Protocol Server |
Medium |
Jun 12, 2026 |
| Reddit |
Chat Message Range Merge |
Medium |
Jun 12, 2026 |
| Stripe |
Factory Network Cost Minimization |
Easy |
Jun 11, 2026 |
| Stripe |
Credit Card Fraud Detection |
Easy |
Jun 10, 2026 |
| Google / Affirm / Uber |
Evaluate String Expression |
Medium |
Jun 10, 2026 |
| Stripe |
Matching Contacts |
Medium |
Jun 10, 2026 |
| Snowflake |
Closest Cake and Global Assignment |
Medium |
Jun 10, 2026 |
| Roblox |
Most Frequent Function Call Stack |
Hard |
Jun 10, 2026 |
| Amazon |
Minimum Redistribution Cost |
Hard |
Jun 09, 2026 |
| Uber / Pinterest |
Bus Routes (LC 815) |
Hard |
Jun 08, 2026 |
| Uber / Apple / Google |
Number of Islands II |
Hard |
Jun 08, 2026 |
| Apple / Amazon / ByteDance / Google / LinkedIn / Microsoft / Pinduoduo / Uber |
Top K Frequent Elements |
Medium |
Jun 08, 2026 |
| OpenAI / Perplexity |
GPU Credits II |
Hard |
Jun 08, 2026 |
| Snowflake |
Max Credits with K Classes (Interval-Style) |
Medium |
Jun 07, 2026 |
| Databricks |
File Encryption Tree Optimization |
Hard |
Jun 06, 2026 |
| ByteDance / Amazon |
Course Schedule and Topological Sort on a Directed Graph |
Medium |
Jun 06, 2026 |
| Snowflake |
Four-in-a-row Game |
Medium |
Jun 06, 2026 |
| Uber |
Construct Quad Tree |
Medium |
Jun 06, 2026 |
| Verkada |
Camera Motion Detection |
Medium |
Jun 05, 2026 |
| Pinterest |
Put Boxes Into the Warehouse (LC 1564) |
Medium |
Jun 05, 2026 |
| Capital One |
Matrix Border Sort & Clockwise Fill |
Medium |
Jun 05, 2026 |
| Capital One |
Dynamic Two-Array Pair Sum Queries |
Medium |
Jun 05, 2026 |