
535

Encode and Decode TinyURL

75.9%

Medium


525

Contiguous Array

34.4%

Medium


508

Most Frequent Subtree Sum

51.7%

Medium


500

Keyboard Row

60.3%

Easy


463

Island Perimeter

56.6%

Easy


454

4Sum II

45.4%

Medium


451

Sort Characters By Frequency

50.3%

Medium


447

Number of Boomerangs

43.5%

Easy


438

Find All Anagrams in a String

33.5%

Easy


409

Longest Palindrome

44.9%

Easy


389

Find the Difference

51.3%

Easy


381

Insert Delete GetRandom O(1)  Duplicates allowed

28.4%

Hard


380

Insert Delete GetRandom O(1)

38.8%

Medium


359

Logger Rate Limiter

58.8%

Easy


358

Rearrange String k Distance Apart

31.8%

Hard


356

Line Reflection

30.3%

Medium


355

Design Twitter

25.1%

Medium


350

Intersection of Two Arrays II

44.0%

Easy


349

Intersection of Two Arrays

46.4%

Easy


347

Top K Frequent Elements

46.9%

Medium


340

Longest Substring with At Most K Distinct Characters

38.4%

Hard


336

Palindrome Pairs

25.3%

Hard


325

Maximum Size Subarray Sum Equals k

42.0%

Medium


314

Binary Tree Vertical Order Traversal

36.1%

Medium


311

Sparse Matrix Multiplication

50.6%

Medium


299

Bulls and Cows

33.8%

Medium


290

Word Pattern

32.5%

Easy


288

Unique Word Abbreviation

15.9%

Medium


274

HIndex

32.6%

Medium


266

Palindrome Permutation

56.1%

Easy


249

Group Shifted Strings

40.0%

Medium


246

Strobogrammatic Number

39.3%

Easy


244

Shortest Word Distance II

35.8%

Medium


242

Valid Anagram

45.5%

Easy


219

Contains Duplicate II

31.9%

Easy


217

Contains Duplicate

44.5%

Easy


205

Isomorphic Strings

33.0%

Easy


204

Count Primes

26.3%

Easy


202

Happy Number

39.8%

Easy


187

Repeated DNA Sequences

30.3%

Medium


170

Two Sum III  Data structure design

23.4%

Easy


166

Fraction to Recurring Decimal

17.1%

Medium


159

Longest Substring with At Most Two Distinct Characters

40.2%

Hard


149

Max Points on a Line

15.5%

Hard


138

Copy List with Random Pointer

26.5%

Medium


136

Single Number

53.5%

Easy


94

Binary Tree Inorder Traversal

44.9%

Medium


85

Maximal Rectangle

26.8%

Hard


76

Minimum Window Substring

24.4%

Hard


49

Group Anagrams

32.9%

Medium


37

Sudoku Solver

28.9%

Hard


36

Valid Sudoku

34.6%

Medium


30

Substring with Concatenation of All Words

21.8%

Hard


18

4Sum

26.1%

Medium


3

Longest Substring Without Repeating Characters

24.0%

Medium


1

Two Sum

31.9%

Easy
