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DifficultyTopic37 of 37
No.ProblemDifficultyFrequency
3Longest Substring Without Repeating Characters
StringTree
Medium
100.0%
983Minimum Cost For TicketsMedium
87.5%
20Valid Parentheses
Stack/Queue
Easy
87.5%
468Validate IP AddressMedium
87.5%
875Koko Eating BananasMedium
87.5%
682Baseball GameEasy
75.0%
5Longest Palindromic Substring
StringTree
Medium
75.0%
3138Minimum Length of Anagram Concatenation
String
Medium
75.0%
1027Longest Arithmetic Subsequence
String
Medium
75.0%
14Longest Common Prefix
DP
Easy
62.5%
200Number of Islands
GraphMath
Medium
62.5%
121Best Time to Buy and Sell StockEasy
62.5%
3091Apply Operations to Make Sum of Array Greater Than or Equal to k
Array
Medium
62.5%
3122Minimum Number of Operations to Satisfy Conditions
Math
Medium
62.5%
1Two Sum
Sliding Window
Easy
62.5%
1703Minimum Adjacent Swaps for K Consecutive OnesHard
62.5%
997Find the Town JudgeEasy
50.0%
53Maximum Subarray
Array
Medium
50.0%
56Merge IntervalsMedium
50.0%
697Degree of an Array
Array
Easy
50.0%
238Product of Array Except Self
Array
Medium
50.0%
1668Maximum Repeating Substring
StringTree
Easy
50.0%
1013Partition Array Into Three Parts With Equal Sum
ArrayDP
Easy
50.0%
215Kth Largest Element in an Array
ArrayHeap
Medium
50.0%
34Find First and Last Position of Element in Sorted Array
Array
Medium
50.0%
818Race CarHard
50.0%
55Jump GameMedium
50.0%
3137Minimum Number of Operations to Make Word K-Periodic
Math
Medium
50.0%
49Group Anagrams
String
Medium
50.0%
3153Sum of Digit Differences of All Pairs
Math
Medium
50.0%
153SumMedium
50.0%
4Median of Two Sorted Arrays
ArrayHeap
Hard
50.0%
2261K Divisible Elements Subarrays
Array
Medium
50.0%
1925Count Square Sum TriplesEasy
50.0%
665Non-decreasing Array
Array
Medium
50.0%
3108Minimum Cost Walk in Weighted Graph
Graph
Hard
50.0%
264Ugly Number II
Math
Medium
50.0%