Solutions & Explanations

Browse 4,030+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.

4,030 Solutions961 Easy2102 Medium967 Hard

Title	Difficulty	Acceptance	Topics	Solution
1551. Minimum Operations to Make Array Equal	Medium	82.8%	Math	Read
1552. Magnetic Force Between Two Balls	Medium	72.6%	Array Binary Search+1	Read
1553. Minimum Number of Days to Eat N Oranges	Hard	36.2%	Dynamic Programming Memoization	Read
1554. Strings Differ by One Character	Medium	40.0%	Hash Function Hash Table+2	Read
1555. Bank Account Summary	Medium	51.5%	Database	Read
1556. Thousand Separator	Easy	53.7%	String	Read
1557. Minimum Number of Vertices to Reach All Nodes	Medium	81.6%	Graph	Read
1558. Minimum Numbers of Function Calls to Make Target Array	Medium	62.9%	Array Bit Manipulation+1	Read
1559. Detect Cycles in 2D Grid	Medium	63.2%	Array Breadth-First Search+3	Read
1560. Most Visited Sector in a Circular Track	Easy	59.9%	Array Simulation	Read
1561. Maximum Number of Coins You Can Get	Medium	84.9%	Array Game Theory+3	Read
1562. Find Latest Group of Size M	Medium	43.8%	Array Binary Search+2	Read
1563. Stone Game V	Hard	58.8%	Array Dynamic Programming+2	Read
1564. Put Boxes Into the Warehouse I	Medium	67.9%	Array Greedy+1	Read
1565. Unique Orders and Customers Per Month	Easy	82.1%	Database	Read
1566. Detect Pattern of Length M Repeated K or More Times	Easy	43.9%	Array Enumeration	Read
1567. Maximum Length of Subarray With Positive Product	Medium	44.3%	Array Dynamic Programming+1	Read
1568. Minimum Number of Days to Disconnect Island	Hard	58.8%	Array Breadth-First Search+3	Read
1569. Number of Ways to Reorder Array to Get Same BST	Hard	54.0%	Array Binary Search Tree+8	Read
1570. Dot Product of Two Sparse Vectors	Medium	89.9%	Array Design+2	Read
1571. Warehouse Manager	Easy	87.5%	Database	Read
1572. Matrix Diagonal Sum	Easy	84.2%	Array Matrix	Read
1573. Number of Ways to Split a String	Medium	34.6%	Math String	Read
1574. Shortest Subarray to be Removed to Make Array Sorted	Medium	51.2%	Array Binary Search+3	Read
1575. Count All Possible Routes	Hard	65.1%	Array Dynamic Programming+1	Read
1576. Replace All ?'s to Avoid Consecutive Repeating Characters	Easy	45.7%	String	Read
1577. Number of Ways Where Square of Number Is Equal to Product of Two Numbers	Medium	43.9%	Array Hash Table+2	Read
1578. Minimum Time to Make Rope Colorful	Medium	65.2%	Array Dynamic Programming+2	Read
1579. Remove Max Number of Edges to Keep Graph Fully Traversable	Hard	70.1%	Graph Union Find	Read
1580. Put Boxes Into the Warehouse II	Medium	66.6%	Array Greedy+1	Read
1581. Customer Who Visited but Did Not Make Any Transactions	Easy	67.7%	Database	Read
1582. Special Positions in a Binary Matrix	Easy	72.6%	Array Matrix	Read
1583. Count Unhappy Friends	Medium	62.6%	Array Simulation	Read
1584. Min Cost to Connect All Points	Medium	71.7%	Array Graph+2	Read
1585. Check If String Is Transformable With Substring Sort Operations	Hard	51.9%	Greedy Sorting+1	Read
1586. Binary Search Tree Iterator II	Medium	63.4%	Binary Search Tree Binary Tree+4	Read
1587. Bank Account Summary II	Easy	83.4%	Database	Read
1588. Sum of All Odd Length Subarrays	Easy	84.0%	Array Math+1	Read
1589. Maximum Sum Obtained of Any Permutation	Medium	41.1%	Array Greedy+2	Read
1590. Make Sum Divisible by P	Medium	42.6%	Array Hash Table+1	Read
1591. Strange Printer II	Hard	60.8%	Array Graph+2	Read
1592. Rearrange Spaces Between Words	Easy	43.9%	String	Read
1593. Split a String Into the Max Number of Unique Substrings	Medium	68.8%	Backtracking Hash Table+1	Read
1594. Maximum Non Negative Product in a Matrix	Medium	51.5%	Array Dynamic Programming+1	Read
1595. Minimum Cost to Connect Two Groups of Points	Hard	50.3%	Array Bit Manipulation+3	Read
1596. The Most Frequently Ordered Products for Each Customer	Medium	78.3%	Database	Read
1597. Build Binary Expression Tree From Infix Expression	Hard	62.5%	Binary Tree Stack+2	Read
1598. Crawler Log Folder	Easy	71.7%	Array Stack+1	Read
1599. Maximum Profit of Operating a Centennial Wheel	Medium	44.6%	Array Simulation	Read
1600. Throne Inheritance	Medium	68.2%	Depth-First Search Design+2	Read

#1551Medium

Minimum Operations to Make Array Equal

Math

Acceptance: 82.8%

#1552Medium

Magnetic Force Between Two Balls

ArrayBinary SearchSorting

Acceptance: 72.6%

#1553Hard

Minimum Number of Days to Eat N Oranges

Dynamic ProgrammingMemoization

Acceptance: 36.2%

#1554Medium

Strings Differ by One Character

Hash FunctionHash TableRolling Hash+1

Acceptance: 40.0%

#1555Medium

Bank Account Summary

Database

Acceptance: 51.5%

#1556Easy

Thousand Separator

String

Acceptance: 53.7%

#1557Medium

Minimum Number of Vertices to Reach All Nodes

Graph

Acceptance: 81.6%

#1558Medium

Minimum Numbers of Function Calls to Make Target Array

ArrayBit ManipulationGreedy

Acceptance: 62.9%

#1559Medium

Detect Cycles in 2D Grid

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 63.2%

#1560Easy

Most Visited Sector in a Circular Track

ArraySimulation

Acceptance: 59.9%

#1561Medium

Maximum Number of Coins You Can Get

ArrayGame TheoryGreedy+2

Acceptance: 84.9%

#1562Medium

Find Latest Group of Size M

ArrayBinary SearchHash Table+1

Acceptance: 43.8%

#1563Hard

Stone Game V

ArrayDynamic ProgrammingGame Theory+1

Acceptance: 58.8%

#1564Medium

Put Boxes Into the Warehouse I

ArrayGreedySorting

Acceptance: 67.9%

#1565Easy

Unique Orders and Customers Per Month

Database

Acceptance: 82.1%

#1566Easy

Detect Pattern of Length M Repeated K or More Times

ArrayEnumeration

Acceptance: 43.9%

#1567Medium

Maximum Length of Subarray With Positive Product

ArrayDynamic ProgrammingGreedy

Acceptance: 44.3%

#1568Hard

Minimum Number of Days to Disconnect Island

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 58.8%

#1569Hard

Number of Ways to Reorder Array to Get Same BST

ArrayBinary Search TreeBinary Tree+7

Acceptance: 54.0%

#1570Medium

Dot Product of Two Sparse Vectors

ArrayDesignHash Table+1

Acceptance: 89.9%

#1571Easy

Warehouse Manager

Database

Acceptance: 87.5%

#1572Easy

Matrix Diagonal Sum

ArrayMatrix

Acceptance: 84.2%

#1573Medium

Number of Ways to Split a String

MathString

Acceptance: 34.6%

#1574Medium

Shortest Subarray to be Removed to Make Array Sorted

ArrayBinary SearchMonotonic Stack+2

Acceptance: 51.2%

#1575Hard

Count All Possible Routes

ArrayDynamic ProgrammingMemoization

Acceptance: 65.1%

#1576Easy

Replace All ?'s to Avoid Consecutive Repeating Characters

String

Acceptance: 45.7%

#1577Medium

Number of Ways Where Square of Number Is Equal to Product of Two Numbers

ArrayHash TableMath+1

Acceptance: 43.9%

#1578Medium

Minimum Time to Make Rope Colorful

ArrayDynamic ProgrammingGreedy+1

Acceptance: 65.2%

#1579Hard

Remove Max Number of Edges to Keep Graph Fully Traversable

GraphUnion Find

Acceptance: 70.1%

#1580Medium

Put Boxes Into the Warehouse II

ArrayGreedySorting

Acceptance: 66.6%

#1581Easy

Customer Who Visited but Did Not Make Any Transactions

Database

Acceptance: 67.7%

#1582Easy

Special Positions in a Binary Matrix

ArrayMatrix

Acceptance: 72.6%

#1583Medium

Count Unhappy Friends

ArraySimulation

Acceptance: 62.6%

#1584Medium

Min Cost to Connect All Points

ArrayGraphMinimum Spanning Tree+1

Acceptance: 71.7%

#1585Hard

Check If String Is Transformable With Substring Sort Operations

GreedySortingString

Acceptance: 51.9%

#1586Medium

Binary Search Tree Iterator II

Binary Search TreeBinary TreeDesign+3

Acceptance: 63.4%

#1587Easy

Bank Account Summary II

Database

Acceptance: 83.4%

#1588Easy

Sum of All Odd Length Subarrays

ArrayMathPrefix Sum

Acceptance: 84.0%

#1589Medium

Maximum Sum Obtained of Any Permutation

ArrayGreedyPrefix Sum+1

Acceptance: 41.1%

#1590Medium

Make Sum Divisible by P

ArrayHash TablePrefix Sum

Acceptance: 42.6%

#1591Hard

Strange Printer II

ArrayGraphMatrix+1

Acceptance: 60.8%

#1592Easy

Rearrange Spaces Between Words

String

Acceptance: 43.9%

#1593Medium

Split a String Into the Max Number of Unique Substrings

BacktrackingHash TableString

Acceptance: 68.8%

#1594Medium

Maximum Non Negative Product in a Matrix

ArrayDynamic ProgrammingMatrix

Acceptance: 51.5%

#1595Hard

Minimum Cost to Connect Two Groups of Points

ArrayBit ManipulationBitmask+2

Acceptance: 50.3%

#1596Medium

The Most Frequently Ordered Products for Each Customer

Database

Acceptance: 78.3%

#1597Hard

Build Binary Expression Tree From Infix Expression

Binary TreeStackString+1

Acceptance: 62.5%

#1598Easy

Crawler Log Folder

ArrayStackString

Acceptance: 71.7%

#1599Medium

Maximum Profit of Operating a Centennial Wheel

ArraySimulation

Acceptance: 44.6%

#1600Medium

Throne Inheritance

Depth-First SearchDesignHash Table+1

Acceptance: 68.2%

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Master DSA with Step-by-Step Solutions

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Revisit after a week: Spaced repetition helps retain problem-solving patterns