Problems

3,374+ problems · 840 Easy · 1762 Medium · 772 Hard

Title	Solution	Practice	Difficulty	Companies	Topics
3301. Maximize the Total Height of Unique Towers	Solution	Solve	Medium	-	Array Greedy+1
3302. Find the Lexicographically Smallest Valid Sequence	Solution	Solve	Medium	-	Dynamic Programming Greedy+2
3303. Find the Occurrence of First Almost Equal Substring	Solution	Solve	Hard	-	String String Matching
3304. Find the K-th Character in String Game I	Solution	Solve	Easy	-	Bit Manipulation Math+2
3305. Count of Substrings Containing Every Vowel and K Consonants I	Solution	Solve	Medium	-	Hash Table Sliding Window+1
3306. Count of Substrings Containing Every Vowel and K Consonants II	Solution	Solve	Medium	-	Hash Table Sliding Window+1
3307. Find the K-th Character in String Game II	Solution	Solve	Hard	-	Bit Manipulation Math+1
3308. Find Top Performing Driver	Solution	Solve	Medium	-	Database
3309. Maximum Possible Number by Binary Concatenation	Solution	Solve	Medium	-	Array Bit Manipulation+1
3310. Remove Methods From Project	Solution	Solve	Medium	-	Breadth-First Search Depth-First Search+1
3311. Construct 2D Grid Matching Graph Layout	Solution	Solve	Hard	-	Array Graph+2
3312. Sorted GCD Pair Queries	Solution	Solve	Hard	-	Array Binary Search+6
3313. Find the Last Marked Nodes in Tree	Solution	Solve	Hard	-	Depth-First Search Tree
3314. Construct the Minimum Bitwise Array I	Solution	Solve	Easy	-	Array Bit Manipulation
3315. Construct the Minimum Bitwise Array II	Solution	Solve	Medium	-	Array Bit Manipulation
3316. Find Maximum Removals From Source String	Solution	Solve	Medium	-	Array Dynamic Programming+3
3317. Find the Number of Possible Ways for an Event	Solution	Solve	Hard	-	Combinatorics Dynamic Programming+1
3318. Find X-Sum of All K-Long Subarrays I	Solution	Solve	Easy	-	Array Hash Table+2
3319. K-th Largest Perfect Subtree Size in Binary Tree	Solution	Solve	Medium	-	Binary Tree Depth-First Search+2
3320. Count The Number of Winning Sequences	Solution	Solve	Hard	-	Dynamic Programming String
3321. Find X-Sum of All K-Long Subarrays II	Solution	Solve	Hard	-	Array Hash Table+2
3322. Premier League Table Ranking III	Solution	Solve	Medium	-	Database
3323. Minimize Connected Groups by Inserting Interval	Solution	Solve	Medium	-	Array Binary Search+2
3324. Find the Sequence of Strings Appeared on the Screen	Solution	Solve	Medium	-	Simulation String
3325. Count Substrings With K-Frequency Characters I	Solution	Solve	Medium	-	Hash Table Sliding Window+1
3326. Minimum Division Operations to Make Array Non Decreasing	Solution	Solve	Medium	-	Array Greedy+2
3327. Check if DFS Strings Are Palindromes	Solution	Solve	Hard	-	Array Depth-First Search+4
3328. Find Cities in Each State II	Solution	Solve	Medium	-	Database
3329. Count Substrings With K-Frequency Characters II	Solution	Solve	Hard	-	Hash Table Sliding Window+1
3330. Find the Original Typed String I	Solution	Solve	Easy	-	String
3331. Find Subtree Sizes After Changes	Solution	Solve	Medium	-	Array Depth-First Search+3
3332. Maximum Points Tourist Can Earn	Solution	Solve	Medium	-	Array Dynamic Programming+1
3333. Find the Original Typed String II	Solution	Solve	Hard	-	Dynamic Programming Prefix Sum+1
3334. Find the Maximum Factor Score of Array	Solution	Solve	Medium	-	Array Math+1
3335. Total Characters in String After Transformations I	Solution	Solve	Medium	-	Counting Dynamic Programming+3
3336. Find the Number of Subsequences With Equal GCD	Solution	Solve	Hard	-	Array Dynamic Programming+2
3337. Total Characters in String After Transformations II	Solution	Solve	Hard	-	Counting Dynamic Programming+3
3338. Second Highest Salary II	Solution	Solve	Medium	-	Database
3339. Find the Number of K-Even Arrays	Solution	Solve	Medium	-	Dynamic Programming
3340. Check Balanced String	Solution	Solve	Easy	-	String
3341. Find Minimum Time to Reach Last Room I	Solution	Solve	Medium	-	Array Graph+3
3342. Find Minimum Time to Reach Last Room II	Solution	Solve	Medium	-	Array Graph+3
3343. Count Number of Balanced Permutations	Solution	Solve	Hard	-	Combinatorics Dynamic Programming+2
3344. Maximum Sized Array	Solution	Solve	Medium	-	Binary Search Bit Manipulation
3345. Smallest Divisible Digit Product I	Solution	Solve	Easy	-	Enumeration Math
3346. Maximum Frequency of an Element After Performing Operations I	Solution	Solve	Medium	-	Array Binary Search+3
3347. Maximum Frequency of an Element After Performing Operations II	Solution	Solve	Hard	-	Array Binary Search+3
3348. Smallest Divisible Digit Product II	Solution	Solve	Hard	-	Backtracking Greedy+3
3349. Adjacent Increasing Subarrays Detection I	Solution	Solve	Easy	-	Array
3350. Adjacent Increasing Subarrays Detection II	Solution	Solve	Medium	-	Array Binary Search