Programming Puzzles

Search

⌃K

Programming Puzzles

Search

⌃K

3 Longest Substring Without Repeating Characters

4 Median of Two Sorted Arrays

5 Longest Palindromic Substring

6 ZigZag Conversion

7 Reverse Integer

8 String to Integer (atoi)

9 Palindrome Number

11 Container With Most Water

14 Longest Common Prefix

16 3Sum Closest

17 Letter Combinations of a Phone Number

19 Remove Nth Node From End of List

20 Valid Parentheses

21 Merge Two Sorted Lists

22 Generate Parentheses

23 Merge k Sorted Lists

24 Swap Nodes in Pairs

26 Remove Duplicates from Sorted Array

27 Remove Element

28 Implement strStr()

29 Divide Two Integers

30 Substring with Concatenation of All Words

32 Longest Valid Parentheses

33 Search in Rotated Sorted Array

34 Search for a Range

35 Search Insert Position

36 Valid Sudoku

37 Sudoku Solver

38 Count and Say

40 Combination Sum II

41 First Missing Positive

42 Trapping Rain Water

43 Multiply Strings

44 Wildcard Matching

45 Jump Game II

46 Permutations

48 Rotate Image

49 Group Anagrams

53 Maximum Subarray

54 Spiral Matrix

59 Spiral Matrix II

62 Unique Paths

64 Minimum Path Sum

68 Text Justification

70 Climbing Stairs

71 Simplify Path

73 Set Matrix Zeroes

74 Search a 2D Matrix

80 Remove Duplicates from Sorted Array II

83 Remove Duplicates from Sorted List

99 Recover Binary Search Tree

103 Binary Tree Zigzag Level Order Traversal

104 Maximum Depth of Binary Tree

105 Construct Binary Tree from Preorder and Inorder Traversal

114 Flatten Binary Tree to Linked List

119 Pascal's Triangle II

128 Longest Consecutive Sequence

129 Sum Root to Leaf Numbers

133 Clone Graph

136 Single Number

137 Single Number II

138 Copy List with Random Pointer

144 Binary Tree Preorder Traversal

150 Evaluate Reverse Polish Notation

157 Read N Characters Given Read4

161 One Edit Distance

162 Find Peak Element

163 Missing Ranges

167 Two Sum II - Input array is sorted

168 Excel Sheet Column Title

170 Two Sum III - Data structure design

173 Binary Search Tree Iterator

186 Reverse Words in a String II

189 Rotate Array

199 Binary Tree Right Side View

200 Number of Islands

202 Happy Number

207 Course Schedule

210 Course Schedule II

214 Shortest Palindrome

216 Combination Sum III

217 Contains Duplicate

221 Maximal Square

226 Invert Binary Tree

227 Basic Calculator II

228 Summary Ranges

229 Majority Element II

230 Kth Smallest Element in a BST

234 Palindrome Linked List

236 Lowest Common Ancestor of a Binary Tree

237 Delete Node in a Linked List

239 Sliding Window Maximum

240 Search a 2D Matrix II

242 Valid Anagram

243 Shortest Word Distance

245 Shortest Word Distance III

246 Strobogrammatic Number

247 Strobogrammatic Number II

253 Meeting Rooms II

255 Verify Preorder Sequence in Binary Search Tree

256 Paint House

260 Single Number III

261 Graph Valid Tree

263 Ugly Number

264 Ugly Number II

266 Palindromic Permutation

270 Closest Binary Search Tree Value

271 Encode and Decode Strings

277 Find the Celebrity

279 Perfect Squares

280 Wiggle Sort

281 Zigzag Iterator

283 Move Zeroes

284 Peeking Iterator

285 Inorder Successor in BST

286 Walls and Gates

288 Unique Word Abbreviation

290 Word Pattern

296 Best Meeting Point

297 Serialize and Deserialize Binary Tree

298 Binary Tree Longest Consecutive Sequence

301 Remove Invalid Parentheses

304 Range Sum Query 2D - Immutable

310 Minimum Height Trees

311 Sparse Matrix Multiplication

312 Burst Balloons

313 Super Ugly Number

315 Count of Smaller Numbers After Self

316 Remove Duplicate Letters

317 Shortest Distance from All Buildings

319 Bulb Switcher

322 Coin Change

323 Number of Connected Components in an Undirected Graph

326 Power of Three

330 Patching Arrays

333 Largest BST Subtree

334 Increasing Triplet Subsequence

335 Self Crossing

338 Counting Bits

340 Longest Substring with At Most K Distinct Characters

344 Reverse String

345 Reverse Vowels of a String

346 Moving Average from Data Stream

347 Top K Frequent Elements

349 Intersection of Two Arrays

356 Line Reflection

357 Count Numbers with Unique Digits

359 Logger Rate Limiter

362 Design Hit Counter

366 Find Leaves of Binary Tree

367 Valid Perfect Square

369 Plus One Linked List

379 Design Phone Directory

387 First Unique Character in a String

389 Find the Difference

394 Decode String

395 Longest Substring with At Least K Repeating Characters

396 Rotate Function

399 Evaluate Division

404 Sum of Left Leaves

406 Queue Reconstruction by Height

409 Longest Palindrome

417 Pacific Atlantic Water Flow

418 Sentence Screen Fitting

422 Valid Word Square

425 Word Squares

434 Number of Segments in a String

435 Non-overlapping Intervals

438 Find All Anagrams in a String

441 Arranging Coins

445 Add Two Numbers II

453 Minimum Moves to Equal Array Elements

476 Number Complement

482 License Key Formatting

496 Next Greater Element I

500 Keyboard Row

503 Next Greater Element II

505 The Maze II

506 Relative Ranks

507 Perfect Number

513 Find Bottom Left Tree Value

514 Freedom Trail

517 Super Washing Machines

523 Continuous Subarray Sum

530 Minimum Absolute Difference in BST

531 Lonely Pixel I

534 Design TinyURL

545 Boundary of Binary Tree

551 Student Attendance Record I

563 Binary Tree Tilt

567 Permutation in String

572 Subtree of Another Tree

604 Design Compressed String Iterator

605 Can Place Flowers

606 Construct String from Binary Tree

624 Maximum Distance in Arrays

630 Course Schedule III

652 Find Duplicate Subtrees

654 Maximum Binary Tree

657 Judge Route Circle

665 Non-decreasing Array

669 Trim a Binary Search Tree

672 Bulb Switcher II

677 Map Sum Pairs

681 Next Closest Time

684 Redundant Connection

686 Repeated String Match

690 Employee Importance

692 Top K Frequent Words

212 Word Search II

360 Sort Transformed Array

616 Add Bold Tag in String

318 Maximum Product of Word Lengths

341 Flatten Nested List Iterator

272 Closest Binary Search Tree Value II

56 Merge Intervals

215 Kth Largest Element in an Array

98 Validate Binary Search Tree

351 Android Unlock Patterns

289 Game of Life

575 Distribute Candies

47 Permutations II

267 Palindrome Permutation II

308 Range Sum Query 2D - Mutable

348 Design Tic-Tac-Toe

68 Text Justification

125 Valid Palindrome

661 Image Smoother

485 Max Consecutive Ones

208 Implement Trie (Prefix Tree)

140 Word Break II

487 Max Consecutive Ones II

498 Diagonal Traverse

231 Power of Two

520 Detect Capital

473 Matchsticks to Square

127 Word Ladder

251 Flatten 2D Vector

244 Shortest Word Distance II

245 Shortest Word Distance III

423 Reconstruct Original Digits from English

676 Implement Magic Dictionary

332 Reconstruct Itinerary

718 Maximum Length of Repeated Subarray

172 Factorial Trailing Zeroes

713 Subarray Product Less Than K

36 Valid Sudoku

752 Open the Lock

65 Valid Number

760 Find Anagram Mappings

582 Kill Process

594 Longest Harmonious Subsequence

581 Shortest Unsorted Continuous Subarray

599 Minimum Index Sum of Two Lists

635 Design Log Storage System

642 Design Search Autocomplete System

379 Design Phone Directory

295 Find Median from Data Stream

232 Implement Queue using Stacks

383 Ransom Note

278 First Bad Version

206 Reverse Linked List

787 Cheapest Flights Within K Stops

Array and Strings

Circular Array Cycle

Molecular Weight

In Fibonacci Sequence

Shortest Rotated Distance

Sub-array Factor

Matrix Convolution

Add One to Array

Array Transformation

Unique Sub Arrays

Reverse and Simplify String

Information Masking

Minimum Array Reduction

Add Numbers in Unclean Data

Array Operations

Equilibrium Index

Visit All Places in Minimum Time

Trees and Graphs

Recursion and Dynamic Programming

Sorting and Searching

Bit Manipulation

Powered By GitBook

Array and Strings

Here are the articles in this section:

Circular Array Cycle

Molecular Weight

In Fibonacci Sequence

Shortest Rotated Distance

Sub-array Factor

Matrix Convolution

Add One to Array

Array Transformation

Unique Sub Arrays

Reverse and Simplify String

Information Masking

Minimum Array Reduction

Add Numbers in Unclean Data

Array Operations

Equilibrium Index

Visit All Places in Minimum Time

Last modified 3yr ago

Copy link