Amazon Interview Prep - OA, Phone Screen, and Loop Problems | FastPrep

Practice recent Amazon coding and OA questions.

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OnsiteReported today

Resolve Task Dependencies

Graph / Topological Sort / Heap

Start this questionCommon

Shortest Distance on a Circular Bus RouteOA · Reported 1d ago

Longest Increasing Subsequence With Bounded Adjacent DifferenceOnsite · Reported 2d ago

Search in a Rotated Sorted ArrayOnsite · Reported 2d ago

Sliding Window MaximumOnsite · Reported 3d ago

Real Amazon Interview Problems

433

Newest first

ProblemRoundTopicsLast reportedFrequency

Resolve Task DependenciesSeen this week

Graph / Topological Sort / Heap

Shortest Distance on a Circular Bus RouteSeen this week

Array / Prefix Sum

Longest Increasing Subsequence With Bounded Adjacent DifferenceSeen this week

Array / Dynamic Programming / Segment Tree

Search in a Rotated Sorted ArraySeen this week

Array / Binary Search

Sliding Window MaximumSeen this week

Array / Sliding Window / Queue

Merge IntervalsSeen this week

Intervals / Sorting

Sort Bug Report FrequenciesSeen this week

Array / Hash Table / Sorting

Drone Delivery RouteSeen this week

Array / Prefix Sum / Math

First Valid Word SegmentationSeen this week

String / Dynamic Programming / Backtracking

Nearby Fulfillment Centers with InventorySeen this week

Graph / Breadth-First Search / Shortest Path

Maximum System Memory CapacitySeen this week

Sorting / Greedy

Select Least Resource TasksSeen this week

Package Delivery SystemSeen this week

Greedy / Sorting / Heap

Secure Maximum DeliveriesSeen this week

Array / Greedy / Dynamic Programming

Find Median from Data StreamSeen this week

Design / Heap / Sorting

Handwritten SigmoidSeen this week

Handwritten SoftmaxSeen this week

Koko Eating BananasSeen this week

Array / Binary Search / Math

Loyal Customers Across Two DaysSeen this week

Hash Table / Sorting

Scaled Dot-Product AttentionSeen this week

Array / Math / Matrix / Simulation

Smallest Number With a Given Digit SumSeen this week

Greedy / Math / String

Sort an Array with Rotate and FlipSeen this week

Array / Math / Simulation

Find Maximum Total Amount (SDE I, Fungible :)Seen this week

Prefix Sum / Sliding Window

Minimum Circular Redistribution CostSeen this week

Array / Prefix Sum / Greedy

Basic CalculatorSeen this week

String / Stack / Recursion

Distance Between Two Tree NodesSeen this week

Tree / Breadth-First Search / Graph

Minimum Grid Inconvenience

Matrix / Breadth-First Search / Binary Search

Customer Package Delivery Report

Minimum Merge Conflicts

Dynamic Programming / String

Minimum Total Batch Expense

Array / Math / Greedy

Currency Conversion Rate

Graph / Breadth-First Search / Hash Table

Number of Islands II

Array / Matrix / Graph / Union Find

Create Array Generator Service

Minimum Operations to Make the Integer Zero

Course Schedule

Graph / Depth-First Search / Breadth-First Search / Topological Sort

Maximum Length-K Window Sum over Sparse Segments

Array / Sliding Window / Prefix Sum / Intervals

Maximum Sum of Heights

Array / Stack / Dynamic Programming

Meeting Rooms II

Array / Sorting / Two Pointers / Heap / Intervals

Merge Sorted Array

Array / Two Pointers / Sorting

Longest Palindromic Subsequence

String / Dynamic Programming

String / Array / Hash Table / Sorting

Closest Version Date

Array / String / Binary Search

Maximum Concurrent Processes (Bar Raiser Round)

Intervals / Sorting

Maximum Product New Rating

Array / Bit Manipulation / Greedy / Binary Search

Permutation Sorter

Array / Math / Greedy

Get Distinct Pairs (Also apply to AS intern)

Hash Table / Two Pointers

Maximum Final Value

Greedy / Sorting

Package Dependency Order

Graph / Depth-First Search / Topological Sort

Minimum Redistribution Cost

Array / Prefix Sum / Greedy

Array / Matrix / Dynamic Programming

Minimum Delivery Center Inconvenience

Matrix / Binary Search / Breadth-First Search

Unfulfilled Customers by Inventory Priority

Array / Sorting / Simulation

Inventory Allocation

Simulation / Sorting / Heap

Domain Weight Calculation

String / Hash Table / Trie / Depth-First Search

Number of Atoms

String / Stack / Hash Table / Parsing / Sorting

Get Minimum Amount

Get Max Servers

Array / Sorting / Greedy

Minimum Operations to Make Array Valid

Array / Greedy / Hash Table

Minimum Contiguous Replacements

Array / Hash Table / Union Find

Maximum Equal Parts for Prefixes

String / Array / Hash Table / Math

Count Promotional Periods

Get Smallest Base Segment

Maximum Non-Adjacent House Value

Array / Dynamic Programming

Minimum Execution Time

Binary Search / Greedy / Sorting / Array

Running Delivery Time Medians

Count Distinct Domino Colorings

String / Graph / Dynamic Programming / Combinatorics

Lowest Common Ancestor Implemented with Stack

Tree / Stack / Hash Table

Product Category Group Sizes

Union Find / Sorting

Count Connected Components

Graph / Union Find / Depth-First Search

Circular Route Query Distance

Array / Prefix Sum

Tree Node Relationship

Tree / Breadth-First Search

Unique Pairs With Target Sum

Array / Hash Table / Two Pointers

Feasible Indices After Prefix/Suffix Reduction

Feasible Indices After Reduction

Count Similar String Groups

Make Power Non-decreasing

Stable Robot Configurations

Array / Sorting / Combinatorics

Get Minimum Errors

Dynamic Programming / String / Greedy

Maximum Score With Non-Adjacent Values

Make Value Groups Contiguous

Array / Hash Table / Greedy

Dynamic Kth Largest Queries

Longest Zero Sum Subarray

Maximize Minimum Machine Power

Minimum Stick Connection Cost

Maximize Protected City Population

Array / Greedy / Dynamic Programming

Minimum Cost to Convert Products to Variant A

Array / Sliding Window / Greedy

Minimum Preparation Time for Two Handlers

Dynamic Programming / Array

Frequently Bought Together

Array / String / Hash Table / Sorting

Souvenir Shop Purchases

Array / Simulation / Binary Search / Math

Sum Max Plus Min After Decrement Operations

Sort Error Codes by Frequency

Sorting / Hash Table

Best Way to Pack

String / Greedy

Minimum Emergency Deliveries

Array / Greedy / Prefix Sum

Optimize Box IDs

Stack / Greedy / String

Most Common Product Pair

Hash Table / Sorting

Warehouse Robots with Threshold

Array / Sorting / Greedy

Lexicographically Smallest After One Substring Rotation

Productive Worker Teams

Array / Combinatorics

Minimum Operations to Sort a Permutation

Find Minimum Groups

Array / Hash Table / Greedy

Service Pipeline Stabilization Time

String / Stack / Simulation

Lexicographically Maximum Final Sequence

VM Rental Revenue

Longest Arithmetic Subarray After One Change

Replace Values and Return Sums

Minimum S3 Storage Cost

Maximize Machine Strength Sum

Greedy / Sorting

Count Picked Items Less Than Queries

Fair Prize Distribution

Largest Number With Digit Sum

Minimize Binary Subsequence Cost

Min Operations to Adjust Prices

Array / Sorting / Greedy

Min Time After Which the Password Becomes Irrecoverable

Binary Search / Math

Get Trucks for Items 🥥

Sorting / Binary Search

Maximize Pages Before Suspension

Greedy / Sorting / Simulation

Get Maximum Sum

Matrix / Sorting / Greedy / Heap

Segmentify: Minimum Subsegments

Dynamic Programming / Greedy / String

Minimum Connected Delivery Zones After Adding One Interval

Intervals / Greedy / Sorting

Array / Binary Search / Sorting / Stack

Buy Volumes (Order Books :)

Array / Union Find

Dynamic Programming / Two Pointers

Count Possible Winners (All About Rewards :)

Array / Sorting

Get Special String

String / Greedy

Minimize Variation

Array / Sorting / Greedy

Array / Greedy / Hash Table

Determine the Best Skipping Strategy

Dynamic Programming / Greedy

Minimum Total Packaging Effort

Array / Sorting / Greedy

Find Security Level

Array / Prefix Sum / Hash Table

Find Least Possible Vulnerability

Array / Binary Search / Sliding Window / Math

Bring Servers Down

Greedy / Math / Simulation

Count Special Strings

String / Prefix Sum / Hash Table

Find Minimum Days

Binary Search / Sliding Window

Min Cost to Remove Subsequence

Dynamic Programming / String

Minimal Cost to Increase Package Size

Greedy / Sorting

Find Minimum Machines Size

Compute Lowest Linking (Connection) Expense

Prefix Sum / Binary Search

All About Medians

Array / Sorting

Minimize Array Sum Difference

Server Selection

Greedy / Sorting / Hash Table

Split Prefix Suffix

String / Prefix Sum / Hash Table

Get Maximum Count

Array / Hash Table / Sliding Window

Find Minimum Replacements

Find Maximum Number of Subjects Passed (AS Intern, but it may apply to other interns) 🍋

Array / Greedy / Sorting

Find Idle Skills Query

Hash Table / Binary Search

Minimum Retailers

Intervals / Sorting / Greedy

Get Total Requests

Array / Hash Table / Simulation

Find Maximum Score

String / Dynamic Programming

Count Special Substrings in a DNA Sequence

String / Two Pointers

Lexicographically Maximal Resulting Array

Get Minimum Dock Bays

Array / Binary Search / Heap

Dynamic Programming / Binary Search / Intervals

Count Processes Giving Inaccurate Results

Array / Hash Table

Get Max Increments

Array / Sorting / Greedy

Minimum Cost to Purchase Servers

Greedy / Sorting

Next Greater Perfect String

String / Greedy

Use Minimum Tokens

Sorting / Prefix Sum / Binary Search

Get Minimum Number of Unique Distribution Centers

Get Largest Number

Dynamic Programming / Array

Minimum Operations to Remove Characters in Frequency Order (Find Min Deletions :)

String / Dynamic Programming

Maximize Memory Points (India Intern :)

Greedy / Sorting / Prefix Sum

Min Operations to Sort All Packages

Array / Simulation

Count Failed Executions

Array / Hash Table

Count Ways to Select Fleet

Optimal Utilization

Two Pointers / Sorting

Find Network Calls (Also For Amazon UK :)

Array / Sorting / Prefix Sum

Get Maximum Stability

Sorting / Greedy

Find First Index Where Prefix Sum Becomes Non-Positive

Array / Prefix Sum

Convert to Good String

Dynamic Programming / String

Inventory Processes Survival Possibility

Find Min Max Difference

Sorting / Greedy

Max Sum of Non-Overlapping Intervals

Intervals / Dynamic Programming / Sorting

Process Queries on Cart

Linked List / Hash Table / Simulation

Make Array Distinct (Selling Shoes 🩰)

Array / Sorting / Greedy

Get Minimal Cost

Array / Sorting / Greedy

Compute Least Truck Count

Array / Math / Greedy

Ensure Non-Zero Load Sum

Prefix Sum / Hash Table / Greedy

Number of Well Performing Groups

Array / Sliding Window

Trader Joe Trades

Dynamic Programming / Greedy

Transform to Encrypted Number

Array / Simulation

Calculate the Max Value

Matrix / Dynamic Programming / Greedy

Maximum Number of Balanced Shipments

Similar Text Substring Count

String / Sliding Window

Find Maximum Number of Balanced Combinations

Array / Combinatorics / Math

Find Password Strength

String / Greedy

Find Password Strength

String / Hash Table

Max Batches For Shipment

Greedy / Sorting

Sum After Query Update

Array / Hash Table

Compute Remaining Tasks

Array / Prefix Sum / Binary Search

Find Ideal Days

Array / Sliding Window

Find Optimal Level

Array / Binary Search / Greedy

Minimize Maximum Parcels

Array / Binary Search / Greedy

Find Capable Winners

Sorting / Greedy / Array

Compute Maximum Scheduled Tasks

Greedy / Sorting / Two Pointers

Count Idle Warehouse Robots

Hash Table / Array

Let's Play Crush Fruit Together :)

Math / Hash Table

Maximum Domino Removals

Binary Search / Dynamic Programming

Find the Longest Isolated Substring Length

String / Hash Table

Maximize Total Memory Points

Greedy / Sorting

Compute Minimum Total Distance

Array / Sorting / Dynamic Programming

Looking for a Matching Score

String / Hash Table / Sliding Window

Warehouse Allocation (Distribute)

Array / Math / Greedy

Compute Maximum Earning Points

Greedy / Sorting

Get Most Out of the Data

Array / Greedy / Sorting

Minimum Steps to Reduce Array Elements to 0

Find First Unique 🍉

String / Hash Table

Minimum Days to Deliver Parcels

Group Students (AS Intern, it may apply to other interns) 🍑

Sorting / Greedy

Maximum Score in Balanced String 🍇

Get Minimum Value

Dynamic Programming / Array

Sum of Max of Subarrays

Count Secured Strings

Dynamic Programming / String

Compute Relative Player Ratings

Increase Solar-Powered Bulbs to the Maximum

Get Maximum Events

Dynamic Programming / Sorting / Greedy

Find Minimum Time

Array / Sorting / Greedy

Segment Tree / Array

Match Strings (Amazon CN) 🍌

String / Two Pointers

Get Stable Periods Count (Fungible :)

Sliding Window / Hash Table

String / Hash Table / Union Find

Get Maximum Sum (a.k.a. Find Max Health Sum :P

Hash Table / Sorting / Greedy

Maximize Sum of Array Multiplication

Array / Sorting / Greedy

Get Maximum Greyness 🍇

Matrix / Prefix Sum

Palindromic Substrings

String / Dynamic Programming

Get Minimum Boxes

Array / Sorting / Sliding Window

Find Sum of Beauties

Array / Sorting / Binary Search

Get Maximum Information Gain

String / Hash Table / Sorting

Find Max To Balance

String / Stack / Greedy

Find Max Health Sum

Array / Hash Table / Sorting / Greedy

Minimum Starting Health to Win the Game

Sum of System Vulnerability

Stack / Array / Math

Get Data Dependence Sum (Fungible :)

Get Computational Equivalents

Sorting / Two Pointers

Get Outlier Value (Amazon London)

Array / Math / Hash Table

Amazon Review Score 🍅

String / Sliding Window

Find Maximum Maxima Count 🍊

String / Hash Table / Prefix Sum

Max Consecutive ON Servers

String / Sliding Window

Calculate Max Salary

String / Dynamic Programming / Greedy

Get Largest Index Length

Dynamic Programming / Sorting

Maximize Product of Sizes of Subtrees

Tree / Dynamic Programming / Greedy

Maximize Repeated Substring Length

String / Dynamic Programming

Minimum Energy Cost

Dynamic Programming / Array

Optimal Interval Difference

Intervals / Sorting

Get Pairs Count 🥑

Array / Two Pointers / Sorting

Dynamic Programming / Stack

Get Min Operations

Sorting / Greedy

Get Success Value 🍅 (Fungible :)

Sorting / Prefix Sum

Get Final Locations

Hash Table / Sorting

Get Score Difference 🍊

Array / Sorting / Greedy

Find Overlapping Times

Intervals / Sorting

Get Maximum Sum Arr (Fungible :)

Dynamic Programming / Heap / Prefix Sum

How Many Games Did the First Team Win?

Sorting / Binary Search

Minimum Swaps to Make Palindrome

String / Two Pointers / Greedy

Make Array Zero by Subtracting Equal Amounts (LC 2375 :)

Array / Hash Table

Get Max Skill Sum

Prefix Sum / Hash Table

Get Minimum Removal

Hash Table / Greedy / Sorting

Get Minimum Removals

Hash Table / Greedy / Sorting

Array / Sorting / Greedy

Maximize Cluster Power

Greedy / Sorting

Calculate Maximum Profit

Greedy / Sorting

Minimal Unique Segments

String / Sliding Window / Hash Table

Find Minimum Dist. 😉

Sorting / Greedy

Max Transfer Rate

Greedy / Sorting / Math

Get Minimum Changes

Array / Hash Table

Find Lexicographically Smallest String

String / Greedy

Perform Queries

Queue / Simulation

Find Minimum Inefficienty

Dynamic Programming / String

Count Distinct Categories

Array / Hash Table

Find Maximum Packages

Array / Hash Table / Two Pointers

Find Smallest Appealing

String / Greedy

Equalize The Arrays

Array / Greedy / Prefix Sum

Sum of All Days Numbers on Which the Data of the Xth Will Be Dependent

Optimize Identifiers

String / Two Pointers

Maximum Number of Packages

Hash Table / Greedy

Find Obfuscate Message

String / Greedy

Calculate Truck Distance After Refueling

Array / Prefix Sum

Calculate Efficiency Score

Dynamic Programming / Stack / Greedy

Determine Minimum Characters to Append

String / Two Pointers

Minimum Insertions to Make List a Subsequence (Amazon Germany :)

Dynamic Programming / Array

Sum of Distinct Categories

Array / Hash Table

Maximize Negative PnL Months

Greedy / Heap / Prefix Sum

Find Minimum Time Required (Amazon Bangalore :)

String / Greedy / Hash Table

Maximum Quality Sum

Greedy / Sorting / Heap

Reduce Memory Usage

Array / Prefix Sum / Sliding Window

Find Encrypted Number

Math / Combinatorics / Dynamic Programming

Get Smaller Items

Prefix Sum / Binary Search / Sorting

Minimum Rooks in a Peaceful State (SDE 2, Phone Interview)

Matrix / Union Find / Graph

Count Dominant Substrings

String / Sliding Window / Hash Table

Trie / String / Hash Table

Get Number of Perfect Packaging

Dynamic Programming / Combinatorics

Calculate Warehouse Efficiency (Probably for Supply Chain related NG positions --Fungible-- :)

Array / Greedy / Prefix Sum

Check Similar Passwords (Also for Fungile)

String / Two Pointers

Get Max Racers 🍉

Sliding Window / Hash Table

Get Max Discount Pairs

Array / Hash Table / Math

Calculate Beauty Values

Array / Sorting / Prefix Sum

Get Minimum Moves to Zero

Bit Manipulation / Greedy

Optimized Identifiers

String / Two Pointers

Find Minimum Possible Variance

Array / Hash Table

Regulate Temperatures

Array / Greedy / Math

Maximize Partitions

Array / Greedy / Bit Manipulation

Find Maximum Money (Fungible SDE 1 :)

Prefix Sum / Sliding Window

Is Special Sequence

String / Hash Table

Get Minimum Pen Drive Size

Binary Search / Greedy / Sorting

Cleanup Dataset

Greedy / Hash Table

Maximize Total Area of Rectangles (SDE 2)

Sorting / Greedy / Math

Get Minimum Watch Score

Sliding Window / Hash Table

Maximize Similarity

Array / Greedy / Math

Make All Elements Distinct (Amazon London)

Array / Hash Table

Maximize Sum of Array

Array / Greedy / Prefix Sum

Custom Sort String

Sorting / Hash Table

Minimum Weekly Input (Planning Campaingns :)

Dynamic Programming / Array

Get Max Programs

Array / Binary Search / Greedy

Find Maximum Calories

Array / Math / Greedy

Maximize Secondary Tasks Scheduling

Greedy / Sorting / Two Pointers

Maximum Number of Days to Survive

Greedy / Sorting

Get Minimum Time

Array / Sorting / Greedy

Find Requests in Queue

Queue / Simulation

Get Max Alternating Music

String / Sliding Window

Rate-Limiting Algorithm

Greedy / Hash Table / String

Number of Suitable Locations

Sorting / Binary Search / Prefix Sum

Get Minimum Number Of Bulbs Off

Sorting / Greedy / Prefix Sum

Minimum Storage Capacity

Array / Binary Search / Greedy / Two Pointers

Can Rearrange Binary String

String / Greedy / Hash Table

Can Sort Permutation in Given Moves

Minimum Memory for Hard Drives

Binary Search / Array / Greedy

Find Minimum Time to Create Beautiful Canvas

Matrix / Binary Search / Prefix Sum

Minimum Value Calculation by Replacing '!' in a Binary String

String / Dynamic Programming

Get Longest Substring

String / Two Pointers

Maximum Charge After Removal

Dynamic Programming / Array

Minimum Number of Increments on Subarrays to Form a Target Array

Compute Encoded Product Name

String / Sorting

Longest Perfect Anagrams

String / Hash Table / Sliding Window

Array / Sorting / Greedy

Maximize Secondary Tasks Scheduled

Greedy / Sorting / Two Pointers

Find Maximum Zeroes

Get Longest Match

String / Two Pointers

Find Days S2 Subsequence of S1

String / Binary Search / Prefix Sum

Amazon Care Get Minimum Score

Sliding Window / Hash Table / Array

Minimize Warehouse Transfer Cost

Array / Prefix Sum / Greedy

Array / Greedy / Sorting

Channels Max Quality

Sorting / Greedy

Calculate Total Distance Travelled

Array / Binary Search / Prefix Sum

Sort Permutation

Maximum Possible Racers

Sliding Window / Hash Table

Distribute Packages

Array / Greedy / Sorting

Minimize Sum of Distances to Warehouses

Array / Dynamic Programming / Prefix Sum

Get Minimum Sum of Distances

Array / Sorting / Dynamic Programming

Get Number of Teams

Array / Two Pointers / Sorting / Binary Search

Find Minimum Pen Drive Capacity

Array / Binary Search / Greedy / Two Pointers

Get Redundant Substrings

String / Prefix Sum / Hash Table

Find Minimum Pages Per Day

Binary Search / Array

Find Encrypted Password (A.K.A Compute Encoded Product Name

String / Sorting

Find Number of Ways to Group Parcels (Also for Amazon Japan)

Hash Table / Math / Combinatorics

Assign Tasks to Servers

Get Active Requests Count

Queue / Simulation

Schedule Requests to Servers

Array / Greedy / Sorting

Make Array Bitonic

Dynamic Programming / Array

Process Execution

Sorting / Binary Search / Prefix Sum

Is Regex Matching

Dynamic Programming / String / Parsing

Find Minimum Operations (It seems for FT in US but intern in CN)

String / Greedy

Queue / Simulation

Min Total Errors

String / Dynamic Programming / Greedy

Reverse Binary String with Minimum Shifts

String / Two Pointers / Greedy

Get Max Points from Sprints

Array / Sliding Window / Prefix Sum

Count Distinct Passwords

String / Hash Table

Find Kth Minimum Vulnerability

Sliding Window / Heap

Maximize Negative Signs

Maximum Stability

Sorting / Greedy

Maximize Subtree Product

Tree / Dynamic Programming / Greedy

Hash Table / Dynamic Programming

Optimizing Box Weights

Array / Sorting / Greedy

Find K-Level Permutation

Compute Beauty of Array Products

Array / Sliding Window / Segment Tree

Get Max Aggregate Temperature Change

Array / Prefix Sum

Sorting / Hash Table

Get Minimum Number of Moves (A.K.A. Weight Lifting Equipments:)🍅

Find Maximum Pairs

Array / Sorting / Greedy / Two Pointers

String / Sorting / Parsing

Find Number of Compatible Substrings

String / Sliding Window / Hash Table

K-Repetitiveness Feature Value

String / Sliding Window

Find Median of Subarray Uniqueness 🥑

Binary Search / Sliding Window

Kth Smallest in Subarray 🍒

Array / Sliding Window / Heap

Find Earliest Month 🍇

Array / Prefix Sum

Maximum User Traffic

Prefix Sum / Sorting

Max Lucky Numbers 🍅

Get Maximum Pairs 🍉

Array / Sorting / Greedy / Two Pointers

Array / Hash Table

Maximize the Array Sum After Negating at Most K Elements 🥝

Array / Greedy / Prefix Sum

Find Minimum Keypad Click Count (AMZ CN) 🥑

Hash Table / Greedy / Sorting

Find Minimum Trips 🍌

Hash Table / Greedy

Return Records 🥝

Hash Table / Simulation / String

Simulation / Hash Table / String

Get the Fewest Moves (~Operations~)~

Array / Greedy / Math

Minimize Sum of Absolute Differences 🍉

Array / Sorting / Greedy

Sign In Pages 🍊

Hash Table / Simulation / String

Lexicographically Smallest Palindrome Possible 🍊

String / Two Pointers / Greedy

Sort Product Codes 🍑

Sorting / String / Hash Table

Find Maximum Number of Batches

Array / Greedy / Sorting

Find P-Matching Score

String / Hash Table / Sliding Window

Find P-Matching Score

String / Hash Table

Get Minimum Round Trip Cost

Array / Prefix Sum / Two Pointers

Group 1 Win Count

Sorting / Binary Search

Maximize Final Element

Greedy / Sorting

Maximize the Array Value

Maximum Number of Products You Can Pick

Dynamic Programming / Array

Maximum Possible Charge

Dynamic Programming / Array

Number of Duplicates

Hash Table / Array

TikTok Video Relevance Adjustment

Binary Search / Greedy

Maximum Times Word Removed

String / Hash Table

Get Min Cost Data 🍊

String / Greedy / Hash Table

Get Mean Rank Count 🍓

Array / Hash Table / Prefix Sum

Fortune Telling 🍒

Sliding Window / Sorting / Greedy

Find Largest Set of Onion Bags 🍑

Array / Hash Table / Math

Find Recurring Names

Hash Table / Sorting / String

Find Unique Values

Sorting / Hash Table

Get Discount Pairs 🍊

Array / Hash Table / Math

Count Maximum Profitable Groups 🍑

Minimum Time Spent 🍉

Greedy / Sorting / Binary Search

Get Average Standing 🍑

Array / Sorting / Math

Location Of Data After Transfers

Hash Table / Sorting

Erase Pairs 🍇

Count Num Ways 🍒

String / Two Pointers

Get Minimum Cost 🍒

Count Max Num Teams 🥝

Array / Sorting / Sliding Window

Count Spikes 🍓

Array / Sorting

Dropped Requests 🍋

Sliding Window / Array

Remove Anagram 🍋

String / Hash Table / Sorting

Amazon Execute Processes (a.k.a. AWS Processor)

Array / Hash Table / Simulation

Find Number of Possible Unique Strings 🍏

Get Priorities after Execution 🥭

Heap / Hash Table / Simulation

Max Book Copies 🫐

Hash Table / Heap

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