kaysss/leetcode-problem-set · Datasets at Hugging Face

acRate float64 9.28 95.3	difficulty stringclasses 3 values	frontendQuestionId int64 1 3.51k	isFavor bool 1 class	paidOnly bool 2 classes	title stringlengths 3 79	titleSlug stringlengths 3 79	topicTags stringlengths 2 153	hasSolution bool 2 classes	hasVideoSolution bool 2 classes
56.156105	Easy	401	false	false	Binary Watch	binary-watch	['Backtracking', 'Bit Manipulation']	false	false
34.580903	Medium	402	false	false	Remove K Digits	remove-k-digits	['String', 'Stack', 'Greedy', 'Monotonic Stack']	true	false
46.43819	Hard	403	false	false	Frog Jump	frog-jump	['Array', 'Dynamic Programming']	true	false
61.438085	Easy	404	false	false	Sum of Left Leaves	sum-of-left-leaves	['Tree', 'Depth-First Search', 'Breadth-First Search', 'Binary Tree']	true	false
50.485485	Easy	405	false	false	Convert a Number to Hexadecimal	convert-a-number-to-hexadecimal	['Math', 'Bit Manipulation']	false	false
74.048849	Medium	406	false	false	Queue Reconstruction by Height	queue-reconstruction-by-height	['Array', 'Binary Indexed Tree', 'Segment Tree', 'Sorting']	true	false
58.73707	Hard	407	false	false	Trapping Rain Water II	trapping-rain-water-ii	['Array', 'Breadth-First Search', 'Heap (Priority Queue)', 'Matrix']	true	false
36.710264	Easy	408	false	true	Valid Word Abbreviation	valid-word-abbreviation	['Two Pointers', 'String']	false	false
55.481277	Easy	409	false	false	Longest Palindrome	longest-palindrome	['Hash Table', 'String', 'Greedy']	true	false
57.606076	Hard	410	false	false	Split Array Largest Sum	split-array-largest-sum	['Array', 'Binary Search', 'Dynamic Programming', 'Greedy', 'Prefix Sum']	true	false
40.107937	Hard	411	false	true	Minimum Unique Word Abbreviation	minimum-unique-word-abbreviation	['Array', 'String', 'Backtracking', 'Bit Manipulation']	false	false
74.077046	Easy	412	false	false	Fizz Buzz	fizz-buzz	['Math', 'String', 'Simulation']	true	true
64.842639	Medium	413	false	false	Arithmetic Slices	arithmetic-slices	['Array', 'Dynamic Programming', 'Sliding Window']	true	false
36.825028	Easy	414	false	false	Third Maximum Number	third-maximum-number	['Array', 'Sorting']	true	false
51.784928	Easy	415	false	false	Add Strings	add-strings	['Math', 'String', 'Simulation']	true	false
48.180795	Medium	416	false	false	Partition Equal Subset Sum	partition-equal-subset-sum	['Array', 'Dynamic Programming']	true	true
57.105292	Medium	417	false	false	Pacific Atlantic Water Flow	pacific-atlantic-water-flow	['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']	true	false
36.316945	Medium	418	false	true	Sentence Screen Fitting	sentence-screen-fitting	['Array', 'String', 'Dynamic Programming']	false	false
76.334679	Medium	419	false	false	Battleships in a Board	battleships-in-a-board	['Array', 'Depth-First Search', 'Matrix']	false	false
14.457352	Hard	420	false	false	Strong Password Checker	strong-password-checker	['String', 'Greedy', 'Heap (Priority Queue)']	false	false
53.190331	Medium	421	false	false	Maximum XOR of Two Numbers in an Array	maximum-xor-of-two-numbers-in-an-array	['Array', 'Hash Table', 'Bit Manipulation', 'Trie']	true	false
41.902329	Easy	422	false	true	Valid Word Square	valid-word-square	['Array', 'Matrix']	true	false
51.507292	Medium	423	false	false	Reconstruct Original Digits from English	reconstruct-original-digits-from-english	['Hash Table', 'Math', 'String']	true	false
56.67613	Medium	424	false	false	Longest Repeating Character Replacement	longest-repeating-character-replacement	['Hash Table', 'String', 'Sliding Window']	true	false
53.843556	Hard	425	false	true	Word Squares	word-squares	['Array', 'String', 'Backtracking', 'Trie']	true	false
65.403064	Medium	426	false	true	Convert Binary Search Tree to Sorted Doubly Linked List	convert-binary-search-tree-to-sorted-doubly-linked-list	['Linked List', 'Stack', 'Tree', 'Depth-First Search', 'Binary Search Tree', 'Binary Tree', 'Doubly-Linked List']	true	false
76.7786	Medium	427	false	false	Construct Quad Tree	construct-quad-tree	['Array', 'Divide and Conquer', 'Tree', 'Matrix']	true	false
68.13072	Hard	428	false	true	Serialize and Deserialize N-ary Tree	serialize-and-deserialize-n-ary-tree	['String', 'Tree', 'Depth-First Search', 'Breadth-First Search']	true	false
71.188169	Medium	429	false	false	N-ary Tree Level Order Traversal	n-ary-tree-level-order-traversal	['Tree', 'Breadth-First Search']	true	false
61.06364	Medium	430	false	false	Flatten a Multilevel Doubly Linked List	flatten-a-multilevel-doubly-linked-list	['Linked List', 'Depth-First Search', 'Doubly-Linked List']	true	false
80.056141	Hard	431	false	true	Encode N-ary Tree to Binary Tree	encode-n-ary-tree-to-binary-tree	['Tree', 'Depth-First Search', 'Breadth-First Search', 'Design', 'Binary Tree']	true	false
44.759212	Hard	432	false	false	All O`one Data Structure	all-oone-data-structure	['Hash Table', 'Linked List', 'Design', 'Doubly-Linked List']	true	false
55.18212	Medium	433	false	false	Minimum Genetic Mutation	minimum-genetic-mutation	['Hash Table', 'String', 'Breadth-First Search']	true	false
36.30344	Easy	434	false	false	Number of Segments in a String	number-of-segments-in-a-string	['String']	true	false
55.126328	Medium	435	false	false	Non-overlapping Intervals	non-overlapping-intervals	['Array', 'Dynamic Programming', 'Greedy', 'Sorting']	true	false
53.508458	Medium	436	false	false	Find Right Interval	find-right-interval	['Array', 'Binary Search', 'Sorting']	false	false
46.042967	Medium	437	false	false	Path Sum III	path-sum-iii	['Tree', 'Depth-First Search', 'Binary Tree']	true	false
51.94766	Medium	438	false	false	Find All Anagrams in a String	find-all-anagrams-in-a-string	['Hash Table', 'String', 'Sliding Window']	true	false
61.869739	Medium	439	false	true	Ternary Expression Parser	ternary-expression-parser	['String', 'Stack', 'Recursion']	true	false
41.966205	Hard	440	false	false	K-th Smallest in Lexicographical Order	k-th-smallest-in-lexicographical-order	['Trie']	true	false
47.205667	Easy	441	false	false	Arranging Coins	arranging-coins	['Math', 'Binary Search']	true	false
76.296037	Medium	442	false	false	Find All Duplicates in an Array	find-all-duplicates-in-an-array	['Array', 'Hash Table']	true	false
57.573898	Medium	443	false	false	String Compression	string-compression	['Two Pointers', 'String']	true	false
29.254838	Medium	444	false	true	Sequence Reconstruction	sequence-reconstruction	['Array', 'Graph', 'Topological Sort']	false	false
61.602712	Medium	445	false	false	Add Two Numbers II	add-two-numbers-ii	['Linked List', 'Math', 'Stack']	true	false
54.52685	Hard	446	false	false	Arithmetic Slices II - Subsequence	arithmetic-slices-ii-subsequence	['Array', 'Dynamic Programming']	true	false
56.237188	Medium	447	false	false	Number of Boomerangs	number-of-boomerangs	['Array', 'Hash Table', 'Math']	false	false
62.137197	Easy	448	false	false	Find All Numbers Disappeared in an Array	find-all-numbers-disappeared-in-an-array	['Array', 'Hash Table']	true	false
58.417547	Medium	449	false	false	Serialize and Deserialize BST	serialize-and-deserialize-bst	['String', 'Tree', 'Depth-First Search', 'Breadth-First Search', 'Design', 'Binary Search Tree', 'Binary Tree']	true	false
52.698338	Medium	450	false	false	Delete Node in a BST	delete-node-in-a-bst	['Tree', 'Binary Search Tree', 'Binary Tree']	true	false
73.782723	Medium	451	false	false	Sort Characters By Frequency	sort-characters-by-frequency	['Hash Table', 'String', 'Sorting', 'Heap (Priority Queue)', 'Bucket Sort', 'Counting']	true	false
60.149975	Medium	452	false	false	Minimum Number of Arrows to Burst Balloons	minimum-number-of-arrows-to-burst-balloons	['Array', 'Greedy', 'Sorting']	true	false
57.594397	Medium	453	false	false	Minimum Moves to Equal Array Elements	minimum-moves-to-equal-array-elements	['Array', 'Math']	true	false
57.510894	Medium	454	false	false	4Sum II	4sum-ii	['Array', 'Hash Table']	true	false
53.579742	Easy	455	false	false	Assign Cookies	assign-cookies	['Array', 'Two Pointers', 'Greedy', 'Sorting']	true	false
33.943882	Medium	456	false	false	132 Pattern	132-pattern	['Array', 'Binary Search', 'Stack', 'Monotonic Stack', 'Ordered Set']	true	true
35.317942	Medium	457	false	false	Circular Array Loop	circular-array-loop	['Array', 'Hash Table', 'Two Pointers']	false	false
59.270682	Hard	458	false	false	Poor Pigs	poor-pigs	['Math', 'Dynamic Programming', 'Combinatorics']	true	false
46.691755	Easy	459	false	false	Repeated Substring Pattern	repeated-substring-pattern	['String', 'String Matching']	true	false
46.064146	Hard	460	false	false	LFU Cache	lfu-cache	['Hash Table', 'Linked List', 'Design', 'Doubly-Linked List']	true	false
75.927204	Easy	461	false	false	Hamming Distance	hamming-distance	['Bit Manipulation']	true	false
60.82885	Medium	462	false	false	Minimum Moves to Equal Array Elements II	minimum-moves-to-equal-array-elements-ii	['Array', 'Math', 'Sorting']	true	false
73.372204	Easy	463	false	false	Island Perimeter	island-perimeter	['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']	true	false
30.216131	Medium	464	false	false	Can I Win	can-i-win	['Math', 'Dynamic Programming', 'Bit Manipulation', 'Memoization', 'Game Theory', 'Bitmask']	false	false
49.761791	Hard	465	false	true	Optimal Account Balancing	optimal-account-balancing	['Array', 'Dynamic Programming', 'Backtracking', 'Bit Manipulation', 'Bitmask']	true	false
31.482795	Hard	466	false	false	Count The Repetitions	count-the-repetitions	['String', 'Dynamic Programming']	true	false
40.920836	Medium	467	false	false	Unique Substrings in Wraparound String	unique-substrings-in-wraparound-string	['String', 'Dynamic Programming']	false	false
27.720434	Medium	468	false	false	Validate IP Address	validate-ip-address	['String']	true	false
39.802269	Medium	469	false	true	Convex Polygon	convex-polygon	['Array', 'Math', 'Geometry']	false	false
45.830859	Medium	470	false	false	Implement Rand10() Using Rand7()	implement-rand10-using-rand7	['Math', 'Rejection Sampling', 'Randomized', 'Probability and Statistics']	true	false
50.468953	Hard	471	false	true	Encode String with Shortest Length	encode-string-with-shortest-length	['String', 'Dynamic Programming']	false	false
49.376574	Hard	472	false	false	Concatenated Words	concatenated-words	['Array', 'String', 'Dynamic Programming', 'Depth-First Search', 'Trie']	true	false
40.767084	Medium	473	false	false	Matchsticks to Square	matchsticks-to-square	['Array', 'Dynamic Programming', 'Backtracking', 'Bit Manipulation', 'Bitmask']	true	false
48.572464	Medium	474	false	false	Ones and Zeroes	ones-and-zeroes	['Array', 'String', 'Dynamic Programming']	true	false
39.572912	Medium	475	false	false	Heaters	heaters	['Array', 'Two Pointers', 'Binary Search', 'Sorting']	false	false
70.294825	Easy	476	false	false	Number Complement	number-complement	['Bit Manipulation']	true	false
53.568872	Medium	477	false	false	Total Hamming Distance	total-hamming-distance	['Array', 'Math', 'Bit Manipulation']	true	false
40.705569	Medium	478	false	false	Generate Random Point in a Circle	generate-random-point-in-a-circle	['Math', 'Geometry', 'Rejection Sampling', 'Randomized']	true	false
34.742419	Hard	479	false	false	Largest Palindrome Product	largest-palindrome-product	['Math', 'Enumeration']	false	false
38.565734	Hard	480	false	false	Sliding Window Median	sliding-window-median	['Array', 'Hash Table', 'Sliding Window', 'Heap (Priority Queue)']	true	false
52.181231	Medium	481	false	false	Magical String	magical-string	['Two Pointers', 'String']	false	false
44.536029	Easy	482	false	false	License Key Formatting	license-key-formatting	['String']	true	false
42.915893	Hard	483	false	false	Smallest Good Base	smallest-good-base	['Math', 'Binary Search']	false	false
66.917549	Medium	484	false	true	Find Permutation	find-permutation	['Array', 'String', 'Stack', 'Greedy']	true	false
61.999486	Easy	485	false	false	Max Consecutive Ones	max-consecutive-ones	['Array']	true	false
55.592905	Medium	486	false	false	Predict the Winner	predict-the-winner	['Array', 'Math', 'Dynamic Programming', 'Recursion', 'Game Theory']	true	true
51.404036	Medium	487	false	true	Max Consecutive Ones II	max-consecutive-ones-ii	['Array', 'Dynamic Programming', 'Sliding Window']	true	false
31.762099	Hard	488	false	false	Zuma Game	zuma-game	['String', 'Dynamic Programming', 'Stack', 'Breadth-First Search', 'Memoization']	false	false
77.304522	Hard	489	false	true	Robot Room Cleaner	robot-room-cleaner	['Backtracking', 'Interactive']	true	false
59.212013	Medium	490	false	true	The Maze	the-maze	['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']	true	false
61.473825	Medium	491	false	false	Non-decreasing Subsequences	non-decreasing-subsequences	['Array', 'Hash Table', 'Backtracking', 'Bit Manipulation']	true	false
60.173997	Easy	492	false	false	Construct the Rectangle	construct-the-rectangle	['Math']	false	false
31.820555	Hard	493	false	false	Reverse Pairs	reverse-pairs	['Array', 'Binary Search', 'Divide and Conquer', 'Binary Indexed Tree', 'Segment Tree', 'Merge Sort', 'Ordered Set']	true	false
50.442065	Medium	494	false	false	Target Sum	target-sum	['Array', 'Dynamic Programming', 'Backtracking']	true	false
56.870436	Easy	495	false	false	Teemo Attacking	teemo-attacking	['Array', 'Simulation']	true	false
74.108256	Easy	496	false	false	Next Greater Element I	next-greater-element-i	['Array', 'Hash Table', 'Stack', 'Monotonic Stack']	true	false
40.460714	Medium	497	false	false	Random Point in Non-overlapping Rectangles	random-point-in-non-overlapping-rectangles	['Array', 'Math', 'Binary Search', 'Reservoir Sampling', 'Prefix Sum', 'Ordered Set', 'Randomized']	true	false
62.707557	Medium	498	false	false	Diagonal Traverse	diagonal-traverse	['Array', 'Matrix', 'Simulation']	true	false
50.374433	Hard	499	false	true	The Maze III	the-maze-iii	['Array', 'String', 'Depth-First Search', 'Breadth-First Search', 'Graph', 'Heap (Priority Queue)', 'Matrix', 'Shortest Path']	true	false
72.211045	Easy	500	false	false	Keyboard Row	keyboard-row	['Array', 'Hash Table', 'String']	false	false

56.156105

Easy

401

false

Binary Watch

binary-watch

['Backtracking', 'Bit Manipulation']

false

34.580903

Medium

402

false

Remove K Digits

remove-k-digits

['String', 'Stack', 'Greedy', 'Monotonic Stack']

true

false

46.43819

Hard

403

false

Frog Jump

frog-jump

['Array', 'Dynamic Programming']

true

false

61.438085

Easy

404

false

Sum of Left Leaves

sum-of-left-leaves

['Tree', 'Depth-First Search', 'Breadth-First Search', 'Binary Tree']

true

false

50.485485

Easy

405

false

Convert a Number to Hexadecimal

convert-a-number-to-hexadecimal

['Math', 'Bit Manipulation']

false

74.048849

Medium

406

false

Queue Reconstruction by Height

queue-reconstruction-by-height

['Array', 'Binary Indexed Tree', 'Segment Tree', 'Sorting']

true

false

58.73707

Hard

407

false

Trapping Rain Water II

trapping-rain-water-ii

['Array', 'Breadth-First Search', 'Heap (Priority Queue)', 'Matrix']

true

false

36.710264

Easy

408

false

true

Valid Word Abbreviation

valid-word-abbreviation

['Two Pointers', 'String']

false

55.481277

Easy

409

false

Longest Palindrome

longest-palindrome

['Hash Table', 'String', 'Greedy']

true

false

57.606076

Hard

410

false

Split Array Largest Sum

split-array-largest-sum

['Array', 'Binary Search', 'Dynamic Programming', 'Greedy', 'Prefix Sum']

true

false

40.107937

Hard

411

false

true

Minimum Unique Word Abbreviation

minimum-unique-word-abbreviation

['Array', 'String', 'Backtracking', 'Bit Manipulation']

false

74.077046

Easy

412

false

Fizz Buzz

fizz-buzz

['Math', 'String', 'Simulation']

true

64.842639

Medium

413

false

Arithmetic Slices

arithmetic-slices

['Array', 'Dynamic Programming', 'Sliding Window']

true

false

36.825028

Easy

414

false

Third Maximum Number

third-maximum-number

['Array', 'Sorting']

true

false

51.784928

Easy

415

false

Add Strings

add-strings

['Math', 'String', 'Simulation']

true

false

48.180795

Medium

416

false

Partition Equal Subset Sum

partition-equal-subset-sum

['Array', 'Dynamic Programming']

true

57.105292

Medium

417

false

Pacific Atlantic Water Flow

pacific-atlantic-water-flow

['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']

true

false

36.316945

Medium

418

false

true

Sentence Screen Fitting

sentence-screen-fitting

['Array', 'String', 'Dynamic Programming']

false

76.334679

Medium

419

false

Battleships in a Board

battleships-in-a-board

['Array', 'Depth-First Search', 'Matrix']

false

14.457352

Hard

420

false

Strong Password Checker

strong-password-checker

['String', 'Greedy', 'Heap (Priority Queue)']

false

53.190331

Medium

421

false

Maximum XOR of Two Numbers in an Array

maximum-xor-of-two-numbers-in-an-array

['Array', 'Hash Table', 'Bit Manipulation', 'Trie']

true

false

41.902329

Easy

422

false

true

Valid Word Square

valid-word-square

['Array', 'Matrix']

true

false

51.507292

Medium

423

false

Reconstruct Original Digits from English

reconstruct-original-digits-from-english

['Hash Table', 'Math', 'String']

true

false

56.67613

Medium

424

false

Longest Repeating Character Replacement

longest-repeating-character-replacement

['Hash Table', 'String', 'Sliding Window']

true

false

53.843556

Hard

425

false

true

Word Squares

word-squares

['Array', 'String', 'Backtracking', 'Trie']

true

false

65.403064

Medium

426

false

true

Convert Binary Search Tree to Sorted Doubly Linked List

convert-binary-search-tree-to-sorted-doubly-linked-list

['Linked List', 'Stack', 'Tree', 'Depth-First Search', 'Binary Search Tree', 'Binary Tree', 'Doubly-Linked List']

true

false

76.7786

Medium

427

false

Construct Quad Tree

construct-quad-tree

['Array', 'Divide and Conquer', 'Tree', 'Matrix']

true

false

68.13072

Hard

428

false

true

Serialize and Deserialize N-ary Tree

serialize-and-deserialize-n-ary-tree

['String', 'Tree', 'Depth-First Search', 'Breadth-First Search']

true

false

71.188169

Medium

429

false

N-ary Tree Level Order Traversal

n-ary-tree-level-order-traversal

['Tree', 'Breadth-First Search']

true

false

61.06364

Medium

430

false

Flatten a Multilevel Doubly Linked List

flatten-a-multilevel-doubly-linked-list

['Linked List', 'Depth-First Search', 'Doubly-Linked List']

true

false

80.056141

Hard

431

false

true

Encode N-ary Tree to Binary Tree

encode-n-ary-tree-to-binary-tree

['Tree', 'Depth-First Search', 'Breadth-First Search', 'Design', 'Binary Tree']

true

false

44.759212

Hard

432

false

All O`one Data Structure

all-oone-data-structure

['Hash Table', 'Linked List', 'Design', 'Doubly-Linked List']

true

false

55.18212

Medium

433

false

Minimum Genetic Mutation

minimum-genetic-mutation

['Hash Table', 'String', 'Breadth-First Search']

true

false

36.30344

Easy

434

false

Number of Segments in a String

number-of-segments-in-a-string

['String']

true

false

55.126328

Medium

435

false

Non-overlapping Intervals

non-overlapping-intervals

['Array', 'Dynamic Programming', 'Greedy', 'Sorting']

true

false

53.508458

Medium

436

false

Find Right Interval

find-right-interval

['Array', 'Binary Search', 'Sorting']

false

46.042967

Medium

437

false

Path Sum III

path-sum-iii

['Tree', 'Depth-First Search', 'Binary Tree']

true

false

51.94766

Medium

438

false

Find All Anagrams in a String

find-all-anagrams-in-a-string

['Hash Table', 'String', 'Sliding Window']

true

false

61.869739

Medium

439

false

true

Ternary Expression Parser

ternary-expression-parser

['String', 'Stack', 'Recursion']

true

false

41.966205

Hard

440

false

K-th Smallest in Lexicographical Order

k-th-smallest-in-lexicographical-order

['Trie']

true

false

47.205667

Easy

441

false

Arranging Coins

arranging-coins

['Math', 'Binary Search']

true

false

76.296037

Medium

442

false

Find All Duplicates in an Array

find-all-duplicates-in-an-array

['Array', 'Hash Table']

true

false

57.573898

Medium

443

false

String Compression

string-compression

['Two Pointers', 'String']

true

false

29.254838

Medium

444

false

true

Sequence Reconstruction

sequence-reconstruction

['Array', 'Graph', 'Topological Sort']

false

61.602712

Medium

445

false

Add Two Numbers II

add-two-numbers-ii

['Linked List', 'Math', 'Stack']

true

false

54.52685

Hard

446

false

Arithmetic Slices II - Subsequence

arithmetic-slices-ii-subsequence

['Array', 'Dynamic Programming']

true

false

56.237188

Medium

447

false

Number of Boomerangs

number-of-boomerangs

['Array', 'Hash Table', 'Math']

false

62.137197

Easy

448

false

Find All Numbers Disappeared in an Array

find-all-numbers-disappeared-in-an-array

['Array', 'Hash Table']

true

false

58.417547

Medium

449

false

Serialize and Deserialize BST

serialize-and-deserialize-bst

['String', 'Tree', 'Depth-First Search', 'Breadth-First Search', 'Design', 'Binary Search Tree', 'Binary Tree']

true

false

52.698338

Medium

450

false

Delete Node in a BST

delete-node-in-a-bst

['Tree', 'Binary Search Tree', 'Binary Tree']

true

false

73.782723

Medium

451

false

Sort Characters By Frequency

sort-characters-by-frequency

['Hash Table', 'String', 'Sorting', 'Heap (Priority Queue)', 'Bucket Sort', 'Counting']

true

false

60.149975

Medium

452

false

Minimum Number of Arrows to Burst Balloons

minimum-number-of-arrows-to-burst-balloons

['Array', 'Greedy', 'Sorting']

true

false

57.594397

Medium

453

false

Minimum Moves to Equal Array Elements

minimum-moves-to-equal-array-elements

['Array', 'Math']

true

false

57.510894

Medium

454

false

4Sum II

4sum-ii

['Array', 'Hash Table']

true

false

53.579742

Easy

455

false

Assign Cookies

assign-cookies

['Array', 'Two Pointers', 'Greedy', 'Sorting']

true

false

33.943882

Medium

456

false

132 Pattern

132-pattern

['Array', 'Binary Search', 'Stack', 'Monotonic Stack', 'Ordered Set']

true

35.317942

Medium

457

false

Circular Array Loop

circular-array-loop

['Array', 'Hash Table', 'Two Pointers']

false

59.270682

Hard

458

false

Poor Pigs

poor-pigs

['Math', 'Dynamic Programming', 'Combinatorics']

true

false

46.691755

Easy

459

false

Repeated Substring Pattern

repeated-substring-pattern

['String', 'String Matching']

true

false

46.064146

Hard

460

false

LFU Cache

lfu-cache

['Hash Table', 'Linked List', 'Design', 'Doubly-Linked List']

true

false

75.927204

Easy

461

false

Hamming Distance

hamming-distance

['Bit Manipulation']

true

false

60.82885

Medium

462

false

Minimum Moves to Equal Array Elements II

minimum-moves-to-equal-array-elements-ii

['Array', 'Math', 'Sorting']

true

false

73.372204

Easy

463

false

Island Perimeter

island-perimeter

['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']

true

false

30.216131

Medium

464

false

Can I Win

can-i-win

['Math', 'Dynamic Programming', 'Bit Manipulation', 'Memoization', 'Game Theory', 'Bitmask']

false

49.761791

Hard

465

false

true

Optimal Account Balancing

optimal-account-balancing

['Array', 'Dynamic Programming', 'Backtracking', 'Bit Manipulation', 'Bitmask']

true

false

31.482795

Hard

466

false

Count The Repetitions

count-the-repetitions

['String', 'Dynamic Programming']

true

false

40.920836

Medium

467

false

Unique Substrings in Wraparound String

unique-substrings-in-wraparound-string

['String', 'Dynamic Programming']

false

27.720434

Medium

468

false

Validate IP Address

validate-ip-address

['String']

true

false

39.802269

Medium

469

false

true

Convex Polygon

convex-polygon

['Array', 'Math', 'Geometry']

false

45.830859

Medium

470

false

Implement Rand10() Using Rand7()

implement-rand10-using-rand7

['Math', 'Rejection Sampling', 'Randomized', 'Probability and Statistics']

true

false

50.468953

Hard

471

false

true

Encode String with Shortest Length

encode-string-with-shortest-length

['String', 'Dynamic Programming']

false

49.376574

Hard

472

false

Concatenated Words

concatenated-words

['Array', 'String', 'Dynamic Programming', 'Depth-First Search', 'Trie']

true

false

40.767084

Medium

473

false

Matchsticks to Square

matchsticks-to-square

['Array', 'Dynamic Programming', 'Backtracking', 'Bit Manipulation', 'Bitmask']

true

false

48.572464

Medium

474

false

Ones and Zeroes

ones-and-zeroes

['Array', 'String', 'Dynamic Programming']

true

false

39.572912

Medium

475

false

Heaters

heaters

['Array', 'Two Pointers', 'Binary Search', 'Sorting']

false

70.294825

Easy

476

false

Number Complement

number-complement

['Bit Manipulation']

true

false

53.568872

Medium

477

false

Total Hamming Distance

total-hamming-distance

['Array', 'Math', 'Bit Manipulation']

true

false

40.705569

Medium

478

false

Generate Random Point in a Circle

generate-random-point-in-a-circle

['Math', 'Geometry', 'Rejection Sampling', 'Randomized']

true

false

34.742419

Hard

479

false

Largest Palindrome Product

largest-palindrome-product

['Math', 'Enumeration']

false

38.565734

Hard

480

false

Sliding Window Median

sliding-window-median

['Array', 'Hash Table', 'Sliding Window', 'Heap (Priority Queue)']

true

false

52.181231

Medium

481

false

Magical String

magical-string

['Two Pointers', 'String']

false

44.536029

Easy

482

false

License Key Formatting

license-key-formatting

['String']

true

false

42.915893

Hard

483

false

Smallest Good Base

smallest-good-base

['Math', 'Binary Search']

false

66.917549

Medium

484

false

true

Find Permutation

find-permutation

['Array', 'String', 'Stack', 'Greedy']

true

false

61.999486

Easy

485

false

Max Consecutive Ones

max-consecutive-ones

['Array']

true

false

55.592905

Medium

486

false

Predict the Winner

predict-the-winner

['Array', 'Math', 'Dynamic Programming', 'Recursion', 'Game Theory']

true

51.404036

Medium

487

false

true

Max Consecutive Ones II

max-consecutive-ones-ii

['Array', 'Dynamic Programming', 'Sliding Window']

true

false

31.762099

Hard

488

false

Zuma Game

zuma-game

['String', 'Dynamic Programming', 'Stack', 'Breadth-First Search', 'Memoization']

false

77.304522

Hard

489

false

true

Robot Room Cleaner

robot-room-cleaner

['Backtracking', 'Interactive']

true

false

59.212013

Medium

490

false

true

The Maze

the-maze

['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix']

true

false

61.473825

Medium

491

false

Non-decreasing Subsequences

non-decreasing-subsequences

['Array', 'Hash Table', 'Backtracking', 'Bit Manipulation']

true

false

60.173997

Easy

492

false

Construct the Rectangle

construct-the-rectangle

['Math']

false

31.820555

Hard

493

false

Reverse Pairs

reverse-pairs

['Array', 'Binary Search', 'Divide and Conquer', 'Binary Indexed Tree', 'Segment Tree', 'Merge Sort', 'Ordered Set']

true

false

50.442065

Medium

494

false

Target Sum

target-sum

['Array', 'Dynamic Programming', 'Backtracking']

true

false

56.870436

Easy

495

false

Teemo Attacking

teemo-attacking

['Array', 'Simulation']

true

false

74.108256

Easy

496

false

Next Greater Element I

next-greater-element-i

['Array', 'Hash Table', 'Stack', 'Monotonic Stack']

true

false

40.460714

Medium

497

false

Random Point in Non-overlapping Rectangles

random-point-in-non-overlapping-rectangles

['Array', 'Math', 'Binary Search', 'Reservoir Sampling', 'Prefix Sum', 'Ordered Set', 'Randomized']

true

false

62.707557

Medium

498

false

Diagonal Traverse

diagonal-traverse

['Array', 'Matrix', 'Simulation']

true

false

50.374433

Hard

499

false

true

The Maze III

the-maze-iii

['Array', 'String', 'Depth-First Search', 'Breadth-First Search', 'Graph', 'Heap (Priority Queue)', 'Matrix', 'Shortest Path']

true

false

72.211045

Easy

500

false

Keyboard Row

keyboard-row

['Array', 'Hash Table', 'String']

false