Skip to main content
DifficultyTopic32 of 32
No.ProblemDifficultyFrequency
3069Distribute Elements Into Two Arrays I
Array
Easy
100.0%
3072Distribute Elements Into Two Arrays II
Array
Hard
100.0%
3034Number of Subarrays That Match a Pattern I
ArrayMath
Medium
100.0%
3036Number of Subarrays That Match a Pattern II
ArrayMath
Hard
100.0%
3045Count Prefix and Suffix Pairs IIHard
100.0%
3042Count Prefix and Suffix Pairs IEasy
100.0%
3019Number of Changing Keys
Math
Easy
100.0%
33Search in Rotated Sorted Array
ArrayBinary Search
Medium
87.5%
20Valid Parentheses
Stack/Queue
Easy
75.0%
146LRU CacheMedium
75.0%
239Sliding Window Maximum
Sliding Window
Hard
62.5%
4Median of Two Sorted Arrays
ArrayHeap
Hard
62.5%
153SumMedium
62.5%
5Longest Palindromic Substring
StringTree
Medium
62.5%
49Group Anagrams
String
Medium
50.0%
238Product of Array Except Self
Array
Medium
50.0%
25Reverse Nodes in k-Group
Linked List
Hard
50.0%
169Majority ElementEasy
50.0%
875Koko Eating BananasMedium
50.0%
53Maximum Subarray
Array
Medium
50.0%
73Set Matrix Zeroes
Array
Medium
50.0%
390Elimination GameMedium
50.0%
75Sort ColorsMedium
50.0%
141Linked List Cycle
GraphLinked List
Easy
50.0%
54Spiral Matrix
Array
Medium
50.0%
1Two Sum
Sliding Window
Easy
50.0%
215Kth Largest Element in an Array
ArrayHeap
Medium
50.0%
56Merge IntervalsMedium
50.0%
139Word BreakMedium
50.0%
200Number of Islands
GraphMath
Medium
50.0%
142Linked List Cycle II
GraphLinked List
Medium
50.0%
68Text JustificationHard
50.0%