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
1301. Number of Paths with Max Score	Hard	63.4%	Array Dynamic Programming+1	Read
1302. Deepest Leaves Sum	Medium	86.3%	Binary Tree Breadth-First Search+2	Read
1303. Find the Team Size	Easy	89.6%	Database	Read
1304. Find N Unique Integers Sum up to Zero	Easy	78.5%	Array Math	Read
1305. All Elements in Two Binary Search Trees	Medium	79.9%	Binary Search Tree Binary Tree+3	Read
1306. Jump Game III	Medium	70.1%	Array Breadth-First Search+1	Read
1307. Verbal Arithmetic Puzzle	Hard	33.5%	Array Backtracking+2	Read
1308. Running Total for Different Genders	Medium	86.3%	Database	Read
1309. Decrypt String from Alphabet to Integer Mapping	Easy	80.6%	String	Read
1310. XOR Queries of a Subarray	Medium	78.1%	Array Bit Manipulation+1	Read
1311. Get Watched Videos by Your Friends	Medium	54.2%	Array Breadth-First Search+3	Read
1312. Minimum Insertion Steps to Make a String Palindrome	Hard	74.3%	Dynamic Programming String	Read
1313. Decompress Run-Length Encoded List	Easy	85.9%	Array	Read
1314. Matrix Block Sum	Medium	77.0%	Array Matrix+1	Read
1315. Sum of Nodes with Even-Valued Grandparent	Medium	85.6%	Binary Tree Breadth-First Search+2	Read
1316. Distinct Echo Substrings	Hard	53.7%	Hash Function Rolling Hash+2	Read
1317. Convert Integer to the Sum of Two No-Zero Integers	Easy	59.1%	Math	Read
1318. Minimum Flips to Make a OR b Equal to c	Medium	71.9%	Bit Manipulation	Read
1319. Number of Operations to Make Network Connected	Medium	67.0%	Breadth-First Search Depth-First Search+2	Read
1320. Minimum Distance to Type a Word Using Two Fingers	Hard	72.2%	Dynamic Programming String	Read
1321. Restaurant Growth	Medium	54.4%	Database	Read
1322. Ads Performance	Easy	59.4%	Database	Read
1323. Maximum 69 Number	Easy	84.5%	Greedy Math	Read
1324. Print Words Vertically	Medium	68.1%	Array Simulation+1	Read
1325. Delete Leaves With a Given Value	Medium	77.4%	Binary Tree Depth-First Search+1	Read
1326. Minimum Number of Taps to Open to Water a Garden	Hard	50.7%	Array Dynamic Programming+1	Read
1327. List the Products Ordered in a Period	Easy	71.6%	Database	Read
1328. Break a Palindrome	Medium	51.6%	Greedy String	Read
1329. Sort the Matrix Diagonally	Medium	82.9%	Array Matrix+1	Read
1330. Reverse Subarray To Maximize Array Value	Hard	44.1%	Array Greedy+1	Read
1331. Rank Transform of an Array	Easy	73.9%	Array Hash Table+1	Read
1332. Remove Palindromic Subsequences	Easy	77.1%	String Two Pointers	Read
1333. Filter Restaurants by Vegan-Friendly, Price and Distance	Medium	64.2%	Array Sorting	Read
1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance	Medium	73.5%	Dynamic Programming Graph+1	Read
1335. Minimum Difficulty of a Job Schedule	Hard	59.6%	Array Dynamic Programming	Read
1336. Number of Transactions per Visit	Hard	47.7%	Database	Read
1337. The K Weakest Rows in a Matrix	Easy	74.3%	Array Binary Search+3	Read
1338. Reduce Array Size to The Half	Medium	69.5%	Array Greedy+3	Read
1339. Maximum Product of Splitted Binary Tree	Medium	55.7%	Binary Tree Depth-First Search+1	Read
1340. Jump Game V	Hard	75.7%	Array Dynamic Programming+1	Read
1341. Movie Rating	Medium	40.8%	Database	Read
1342. Number of Steps to Reduce a Number to Zero	Easy	85.4%	Bit Manipulation Math	Read
1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Medium	74.3%	Array Sliding Window	Read
1344. Angle Between Hands of a Clock	Medium	69.6%	Math	Read
1345. Jump Game IV	Hard	50.9%	Array Breadth-First Search+1	Read
1346. Check If N and Its Double Exist	Easy	41.7%	Array Binary Search+3	Read
1347. Minimum Number of Steps to Make Two Strings Anagram	Medium	82.6%	Counting Hash Table+1	Read
1348. Tweet Counts Per Frequency	Medium	46.6%	Binary Search Design+3	Read
1349. Maximum Students Taking Exam	Hard	54.2%	Array Bit Manipulation+3	Read
1350. Students With Invalid Departments	Easy	89.8%	Database	Read

#1301Hard

Number of Paths with Max Score

ArrayDynamic ProgrammingMatrix

Acceptance: 63.4%

#1302Medium

Deepest Leaves Sum

Binary TreeBreadth-First SearchDepth-First Search+1

Acceptance: 86.3%

#1303Easy

Find the Team Size

Database

Acceptance: 89.6%

#1304Easy

Find N Unique Integers Sum up to Zero

ArrayMath

Acceptance: 78.5%

#1305Medium

All Elements in Two Binary Search Trees

Binary Search TreeBinary TreeDepth-First Search+2

Acceptance: 79.9%

#1306Medium

Jump Game III

ArrayBreadth-First SearchDepth-First Search

Acceptance: 70.1%

#1307Hard

Verbal Arithmetic Puzzle

ArrayBacktrackingMath+1

Acceptance: 33.5%

#1308Medium

Running Total for Different Genders

Database

Acceptance: 86.3%

#1309Easy

Decrypt String from Alphabet to Integer Mapping

String

Acceptance: 80.6%

#1310Medium

XOR Queries of a Subarray

ArrayBit ManipulationPrefix Sum

Acceptance: 78.1%

#1311Medium

Get Watched Videos by Your Friends

ArrayBreadth-First SearchGraph+2

Acceptance: 54.2%

#1312Hard

Minimum Insertion Steps to Make a String Palindrome

Dynamic ProgrammingString

Acceptance: 74.3%

#1313Easy

Decompress Run-Length Encoded List

Array

Acceptance: 85.9%

#1314Medium

Matrix Block Sum

ArrayMatrixPrefix Sum

Acceptance: 77.0%

#1315Medium

Sum of Nodes with Even-Valued Grandparent

Binary TreeBreadth-First SearchDepth-First Search+1

Acceptance: 85.6%

#1316Hard

Distinct Echo Substrings

Hash FunctionRolling HashString+1

Acceptance: 53.7%

#1317Easy

Convert Integer to the Sum of Two No-Zero Integers

Math

Acceptance: 59.1%

#1318Medium

Minimum Flips to Make a OR b Equal to c

Bit Manipulation

Acceptance: 71.9%

#1319Medium

Number of Operations to Make Network Connected

Breadth-First SearchDepth-First SearchGraph+1

Acceptance: 67.0%

#1320Hard

Minimum Distance to Type a Word Using Two Fingers

Dynamic ProgrammingString

Acceptance: 72.2%

#1321Medium

Restaurant Growth

Database

Acceptance: 54.4%

#1322Easy

Ads Performance

Database

Acceptance: 59.4%

#1323Easy

Maximum 69 Number

GreedyMath

Acceptance: 84.5%

#1324Medium

Print Words Vertically

ArraySimulationString

Acceptance: 68.1%

#1325Medium

Delete Leaves With a Given Value

Binary TreeDepth-First SearchTree

Acceptance: 77.4%

#1326Hard

Minimum Number of Taps to Open to Water a Garden

ArrayDynamic ProgrammingGreedy

Acceptance: 50.7%

#1327Easy

List the Products Ordered in a Period

Database

Acceptance: 71.6%

#1328Medium

Break a Palindrome

GreedyString

Acceptance: 51.6%

#1329Medium

Sort the Matrix Diagonally

ArrayMatrixSorting

Acceptance: 82.9%

#1330Hard

Reverse Subarray To Maximize Array Value

ArrayGreedyMath

Acceptance: 44.1%

#1331Easy

Rank Transform of an Array

ArrayHash TableSorting

Acceptance: 73.9%

#1332Easy

Remove Palindromic Subsequences

StringTwo Pointers

Acceptance: 77.1%

#1333Medium

Filter Restaurants by Vegan-Friendly, Price and Distance

ArraySorting

Acceptance: 64.2%

#1334Medium

Find the City With the Smallest Number of Neighbors at a Threshold Distance

Dynamic ProgrammingGraphShortest Path

Acceptance: 73.5%

#1335Hard

Minimum Difficulty of a Job Schedule

ArrayDynamic Programming

Acceptance: 59.6%

#1336Hard

Number of Transactions per Visit

Database

Acceptance: 47.7%

#1337Easy

The K Weakest Rows in a Matrix

ArrayBinary SearchHeap (Priority Queue)+2

Acceptance: 74.3%

#1338Medium

Reduce Array Size to The Half

ArrayGreedyHash Table+2

Acceptance: 69.5%

#1339Medium

Maximum Product of Splitted Binary Tree

Binary TreeDepth-First SearchTree

Acceptance: 55.7%

#1340Hard

Jump Game V

ArrayDynamic ProgrammingSorting

Acceptance: 75.7%

#1341Medium

Movie Rating

Database

Acceptance: 40.8%

#1342Easy

Number of Steps to Reduce a Number to Zero

Bit ManipulationMath

Acceptance: 85.4%

#1343Medium

Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold

ArraySliding Window

Acceptance: 74.3%

#1344Medium

Angle Between Hands of a Clock

Math

Acceptance: 69.6%

#1345Hard

Jump Game IV

ArrayBreadth-First SearchHash Table

Acceptance: 50.9%

#1346Easy

Check If N and Its Double Exist

ArrayBinary SearchHash Table+2

Acceptance: 41.7%

#1347Medium

Minimum Number of Steps to Make Two Strings Anagram

CountingHash TableString

Acceptance: 82.6%

#1348Medium

Tweet Counts Per Frequency

Binary SearchDesignHash Table+2

Acceptance: 46.6%

#1349Hard

Maximum Students Taking Exam

ArrayBit ManipulationBitmask+2

Acceptance: 54.2%

#1350Easy

Students With Invalid Departments

Database

Acceptance: 89.8%

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