
525

Contiguous Array

22.2%

Medium


508

Most Frequent Subtree Sum

52.2%

Medium


500

Keyboard Row

60.7%

Easy


463

Island Perimeter

56.1%

Easy


454

4Sum II

44.6%

Medium


451

Sort Characters By Frequency

50.1%

Medium


447

Number of Boomerangs

43.3%

Easy


438

Find All Anagrams in a String

33.4%

Easy


409

Longest Palindrome

44.6%

Easy


389

Find the Difference

51.1%

Easy


381

Insert Delete GetRandom O(1)  Duplicates allowed

28.3%

Hard


380

Insert Delete GetRandom O(1)

38.7%

Medium


359

Logger Rate Limiter

58.4%

Easy


358

Rearrange String k Distance Apart

31.8%

Hard


356

Line Reflection

30.2%

Medium


355

Design Twitter

24.9%

Medium


350

Intersection of Two Arrays II

43.8%

Easy


349

Intersection of Two Arrays

46.0%

Easy


347

Top K Frequent Elements

46.5%

Medium


340

Longest Substring with At Most K Distinct Characters

38.5%

Hard


336

Palindrome Pairs

25.1%

Hard


325

Maximum Size Subarray Sum Equals k

41.8%

Medium


314

Binary Tree Vertical Order Traversal

36.0%

Medium


311

Sparse Matrix Multiplication

50.8%

Medium


299

Bulls and Cows

33.6%

Medium


290

Word Pattern

32.3%

Easy


288

Unique Word Abbreviation

15.7%

Medium


274

HIndex

32.4%

Medium


266

Palindrome Permutation

55.8%

Easy


249

Group Shifted Strings

39.6%

Medium


246

Strobogrammatic Number

39.2%

Easy


244

Shortest Word Distance II

35.2%

Medium


242

Valid Anagram

45.2%

Easy


219

Contains Duplicate II

31.8%

Easy


217

Contains Duplicate

44.2%

Easy


205

Isomorphic Strings

32.8%

Easy


204

Count Primes

26.2%

Easy


202

Happy Number

39.5%

Easy


187

Repeated DNA Sequences

30.0%

Medium


170

Two Sum III  Data structure design

23.1%

Easy


166

Fraction to Recurring Decimal

17.0%

Medium


159

Longest Substring with At Most Two Distinct Characters

40.0%

Hard


149

Max Points on a Line

15.6%

Hard


138

Copy List with Random Pointer

26.6%

Medium


136

Single Number

53.1%

Easy


94

Binary Tree Inorder Traversal

44.4%

Medium


85

Maximal Rectangle

26.5%

Hard


76

Minimum Window Substring

24.2%

Hard


49

Group Anagrams

32.5%

Medium


37

Sudoku Solver

28.5%

Hard


36

Valid Sudoku

34.3%

Medium


30

Substring with Concatenation of All Words

21.7%

Hard


18

4Sum

25.9%

Medium


3

Longest Substring Without Repeating Characters

23.8%

Medium


1

Two Sum

31.0%

Easy
