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DifficultyTopic62 of 62
No.ProblemDifficultyFrequency
121Best Time to Buy and Sell StockEasy
100.0%
1217Minimum Cost to Move Chips to The Same PositionEasy
100.0%
1626Best Team With No ConflictsMedium
100.0%
1Two Sum
Sliding Window
Easy
87.5%
1964Find the Longest Valid Obstacle Course at Each Position
Tree
Hard
87.5%
2152Minimum Number of Lines to Cover Points
Math
Medium
87.5%
2395Find Subarrays With Equal Sum
Array
Easy
87.5%
2432The Employee That Worked on the Longest TaskEasy
87.5%
2433Find The Original Array of Prefix Xor
Array
Medium
87.5%
3Longest Substring Without Repeating Characters
StringTree
Medium
75.0%
138Copy List with Random PointerMedium
75.0%
2444Count Subarrays With Fixed Bounds
Array
Hard
75.0%
740Delete and EarnMedium
75.0%
55Jump GameMedium
62.5%
56Merge IntervalsMedium
62.5%
75Sort ColorsMedium
62.5%
146LRU CacheMedium
62.5%
215Kth Largest Element in an Array
ArrayHeap
Medium
62.5%
49Group Anagrams
String
Medium
62.5%
26Remove Duplicates from Sorted Array
Array
Easy
62.5%
936Stamping The SequenceHard
62.5%
2607Make K-Subarray Sums Equal
Array
Medium
62.5%
54Spiral Matrix
Array
Medium
62.5%
9Palindrome Number
StringMath
Easy
62.5%
387First Unique Character in a String
String
Easy
62.5%
152Maximum Product Subarray
Array
Medium
62.5%
739Daily TemperaturesMedium
62.5%
19Remove Nth Node From End of List
Linked List
Medium
62.5%
496Next Greater Element IEasy
50.0%
525Contiguous Array
Array
Medium
50.0%
253Meeting Rooms IIMedium
50.0%
153SumMedium
50.0%
992Subarrays with K Different Integers
ArrayMath
Hard
50.0%
22Generate ParenthesesMedium
50.0%
1539Kth Missing Positive Number
Math
Easy
50.0%
518Coin Change II
DP
Medium
50.0%
79Word SearchMedium
50.0%
1658Minimum Operations to Reduce X to ZeroMedium
50.0%
1209Remove All Adjacent Duplicates in String II
String
Medium
50.0%
1143Longest Common Subsequence
StringDP
Medium
50.0%
556Next Greater Element IIIMedium
50.0%
3144Minimum Substring Partition of Equal Character Frequency
StringDPTree
Medium
50.0%
1529Minimum Suffix FlipsMedium
50.0%
503Next Greater Element IIMedium
50.0%
1326Minimum Number of Taps to Open to Water a Garden
Math
Hard
50.0%
1481Least Number of Unique Integers after K Removals
Math
Medium
50.0%
135CandyHard
50.0%
5Longest Palindromic Substring
StringTree
Medium
50.0%
143Reorder ListMedium
50.0%
234Palindrome Linked List
StringLinked List
Easy
50.0%
300Longest Increasing Subsequence
String
Medium
50.0%
169Majority ElementEasy
50.0%
907Sum of Subarray Minimums
Array
Medium
50.0%
322Coin Change
DP
Medium
50.0%
1470Shuffle the Array
Array
Easy
50.0%
128Longest Consecutive SequenceMedium
50.0%
11Container With Most WaterMedium
50.0%
53Maximum Subarray
Array
Medium
50.0%
347Top K Frequent Elements
Heap
Medium
50.0%
327Count of Range SumHard
50.0%
273Integer to English Words
Math
Hard
50.0%
32Longest Valid Parentheses
Stack/Queue
Hard
50.0%