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3557 questions in one focused tracker. Company collections will use the same saved progress.

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Questions 3557

Done	Question	Resource
Mark 01 Matrix completed	01 Matrix	Open
Mark 132 Pattern completed	132 Pattern	Open
Mark 1-bit and 2-bit Characters completed	1-bit and 2-bit Characters	Open
Mark 24 Game completed	24 Game	Open
Mark 2 Keys Keyboard completed	2 Keys Keyboard	Open
Mark 3Sum completed	3Sum	Open
Mark 3Sum Closest completed	3Sum Closest	Open
Mark 3Sum Smaller completed	3Sum Smaller	Open
Mark 3Sum With Multiplicity completed	3Sum With Multiplicity	Open
Mark 4 Keys Keyboard completed	4 Keys Keyboard	Open
Mark 4Sum completed	4Sum	Open
Mark 4Sum II completed	4Sum II	Open
Mark Abbreviating the Product of a Range completed	Abbreviating the Product of a Range	Open
Mark Accounts Merge completed	Accounts Merge	Open
Mark Active Businesses completed	Active Businesses	Open
Mark Active Users completed	Active Users	Open
Mark Activity Participants completed	Activity Participants	Open
Mark Actors and Directors Who Cooperated At Least Three Times completed	Actors and Directors Who Cooperated At Least Three Times	Open
Mark Add Binary completed	Add Binary	Open
Mark Add Bold Tag in String completed	Add Bold Tag in String	Open
Mark Add Digits completed	Add Digits	Open
Mark Add Edges to Make Degrees of All Nodes Even completed	Add Edges to Make Degrees of All Nodes Even	Open
Mark Adding Spaces to a String completed	Adding Spaces to a String	Open
Mark Adding Two Negabinary Numbers completed	Adding Two Negabinary Numbers	Open
Mark Additive Number completed	Additive Number	Open
Mark Add One Row to Tree completed	Add One Row to Tree	Open
Mark Add Strings completed	Add Strings	Open
Mark Add to Array-Form of Integer completed	Add to Array-Form of Integer	Open
Mark Add Two Integers completed	Add Two Integers	Open
Mark Add Two Numbers completed	Add Two Numbers	Open
Mark Add Two Numbers II completed	Add Two Numbers II	Open
Mark Add Two Polynomials Represented as Linked Lists completed	Add Two Polynomials Represented as Linked Lists	Open
Mark Add Two Promises completed	Add Two Promises	Open
Mark Ad-Free Sessions completed	Ad-Free Sessions	Open
Mark Adjacent Increasing Subarrays Detection I completed	Adjacent Increasing Subarrays Detection I	Open
Mark Adjacent Increasing Subarrays Detection II completed	Adjacent Increasing Subarrays Detection II	Open
Mark Ads Performance completed	Ads Performance	Open
Mark Advantage Shuffle completed	Advantage Shuffle	Open
Mark AI - Design an Excel-Like Autofill Engine completed	AI - Design an Excel-Like Autofill Engine	Open
Mark Airplane Seat Assignment Probability completed	Airplane Seat Assignment Probability	Open
Mark Alert Using Same Key-Card Three or More Times in a One Hour Period completed	Alert Using Same Key-Card Three or More Times in a One Hour Period	Open
Mark Alice and Bob Playing Flower Game completed	Alice and Bob Playing Flower Game	Open
Mark Alien Dictionary completed	Alien Dictionary	Open
Mark All Ancestors of a Node in a Directed Acyclic Graph completed	All Ancestors of a Node in a Directed Acyclic Graph	Open
Mark All Divisions With the Highest Score of a Binary Array completed	All Divisions With the Highest Score of a Binary Array	Open
Mark All Elements in Two Binary Search Trees completed	All Elements in Two Binary Search Trees	Open
Mark All Nodes Distance K in Binary Tree completed	All Nodes Distance K in Binary Tree	Open
Mark Allocate Mailboxes completed	Allocate Mailboxes	Open
Mark All O`one Data Structure completed	All O`one Data Structure	Open
Mark Allow One Function Call completed	Allow One Function Call	Open
Mark All Paths from Source Lead to Destination completed	All Paths from Source Lead to Destination	Open
Mark All Paths From Source to Target completed	All Paths From Source to Target	Open
Mark All People Report to the Given Manager completed	All People Report to the Given Manager	Open
Mark All Possible Full Binary Trees completed	All Possible Full Binary Trees	Open
Mark All the Matches of the League completed	All the Matches of the League	Open
Mark All the Pairs With the Maximum Number of Common Followers completed	All the Pairs With the Maximum Number of Common Followers	Open
Mark All Valid Triplets That Can Represent a Country completed	All Valid Triplets That Can Represent a Country	Open
Mark Alphabet Board Path completed	Alphabet Board Path	Open
Mark Alternating Digit Sum completed	Alternating Digit Sum	Open
Mark Alternating Groups I completed	Alternating Groups I	Open
Mark Alternating Groups II completed	Alternating Groups II	Open
Mark Ambiguous Coordinates completed	Ambiguous Coordinates	Open
Mark Amount of New Area Painted Each Day completed	Amount of New Area Painted Each Day	Open
Mark Amount of Time for Binary Tree to Be Infected completed	Amount of Time for Binary Tree to Be Infected	Open
Mark Analyze Organization Hierarchy completed	Analyze Organization Hierarchy	Open
Mark Analyze Subscription Conversion completed	Analyze Subscription Conversion	Open
Mark Analyze User Website Visit Pattern completed	Analyze User Website Visit Pattern	Open
Mark Android Unlock Patterns completed	Android Unlock Patterns	Open
Mark Angle Between Hands of a Clock completed	Angle Between Hands of a Clock	Open
Mark Ant on the Boundary completed	Ant on the Boundary	Open
Mark A Number After a Double Reversal completed	A Number After a Double Reversal	Open
Mark Append Characters to String to Make Subsequence completed	Append Characters to String to Make Subsequence	Open
Mark Append K Integers With Minimal Sum completed	Append K Integers With Minimal Sum	Open
Mark Apple Redistribution into Boxes completed	Apple Redistribution into Boxes	Open
Mark Apples & Oranges completed	Apples & Oranges	Open
Mark Apply Bitwise Operations to Make Strings Equal completed	Apply Bitwise Operations to Make Strings Equal	Open
Mark Apply Discount Every n Orders completed	Apply Discount Every n Orders	Open
Mark Apply Discount to Prices completed	Apply Discount to Prices	Open
Mark Apply Operations on Array to Maximize Sum of Squares completed	Apply Operations on Array to Maximize Sum of Squares	Open
Mark Apply Operations to an Array completed	Apply Operations to an Array	Open
Mark Apply Operations to Make All Array Elements Equal to Zero completed	Apply Operations to Make All Array Elements Equal to Zero	Open
Mark Apply Operations to Make String Empty completed	Apply Operations to Make String Empty	Open
Mark Apply Operations to Make Sum of Array Greater Than or Equal to k completed	Apply Operations to Make Sum of Array Greater Than or Equal to k	Open
Mark Apply Operations to Make Two Strings Equal completed	Apply Operations to Make Two Strings Equal	Open
Mark Apply Operations to Maximize Frequency Score completed	Apply Operations to Maximize Frequency Score	Open
Mark Apply Operations to Maximize Score completed	Apply Operations to Maximize Score	Open
Mark Apply Substitutions completed	Apply Substitutions	Open
Mark Apply Transform Over Each Element in Array completed	Apply Transform Over Each Element in Array	Open
Mark Arithmetic Slices completed	Arithmetic Slices	Open
Mark Arithmetic Slices II - Subsequence completed	Arithmetic Slices II - Subsequence	Open
Mark Arithmetic Subarrays completed	Arithmetic Subarrays	Open
Mark Armstrong Number completed	Armstrong Number	Open
Mark Arranging Coins completed	Arranging Coins	Open
Mark Array Nesting completed	Array Nesting	Open
Mark Array of Doubled Pairs completed	Array of Doubled Pairs	Open
Mark Array Partition completed	Array Partition	Open
Mark Array Prototype Last completed	Array Prototype Last	Open
Mark Array Reduce Transformation completed	Array Reduce Transformation	Open
Mark Array Transformation completed	Array Transformation	Open
Mark Array With Elements Not Equal to Average of Neighbors completed	Array With Elements Not Equal to Average of Neighbors	Open