Dashboard Questions Topics Companies Sheets

Sorting

Topic

420 coding problems covering Sorting concepts. Master this topic and improve your problem-solving skills.

420

Problems

Easy

247

Medium

Hard

Difficulty

All420 Easy84 Medium247 Hard89

Title	Solve	Difficulty	Companies	Topics
15. 3Sum	Solve	Medium	Adobe+21	Array Sorting+1
16. 3Sum Closest	Solve	Medium	Adobe+6	Array Sorting+1
18. 4Sum	Solve	Medium	Adobe+8	Array Sorting+1
49. Group Anagrams	Solve	Medium	Adobe+23	Array Hash Table+2
56. Merge Intervals	Solve	Medium	Adobe+24	Array Sorting
75. Sort Colors	Solve	Medium	Adobe+9	Array Sorting+1
88. Merge Sorted Array	Solve	Easy	Amazon+9	Array Sorting+1
147. Insertion Sort List	Solve	Medium	Google	Linked List Sorting
148. Sort List	Solve	Medium	Amazon+4	Divide and Conquer Linked List+3
164. Maximum Gap	Solve	Medium	Amazon+1	Array Bucket Sort+2
169. Majority Element	Solve	Easy	Adobe+8	Array Counting+3
179. Largest Number	Solve	Medium	Adobe+8	Array Greedy+2
215. Kth Largest Element in an Array	Solve	Medium	ABCO+44	Array Divide and Conquer+3
217. Contains Duplicate	Solve	Easy	Adobe+8	Array Hash Table+1
220. Contains Duplicate III	Solve	Hard	Adobe+3	Array Bucket Sort+3
229. Majority Element II	Solve	Medium	Accolite+21	Array Counting+2
242. Valid Anagram	Solve	Easy	Affirm+8	Hash Table Sorting+1
252. Meeting Rooms	Solve	Easy	Amazon+1	Array Sorting
253. Meeting Rooms II	Solve	Medium	Amazon+8	Array Greedy+4
259. 3Sum Smaller	Solve	Medium	Apple+2	Array Binary Search+2
268. Missing Number	Solve	Easy	Adobe+8	Array Binary Search+4
274. H-Index	Solve	Medium	Alation+4	Array Counting Sort+1
280. Wiggle Sort	Solve	Medium	Amazon+2	Array Greedy+1
295. Find Median from Data Stream	Solve	Hard	Adobe+33	Data Stream Design+3
296. Best Meeting Point	Solve	Hard	Expedia+2	Array Math+2
314. Binary Tree Vertical Order Traversal	Solve	Medium	Amazon+3	Binary Tree Breadth-First Search+4
324. Wiggle Sort II	Solve	Medium	Adobe	Array Divide and Conquer+3
347. Top K Frequent Elements	Solve	Medium	Adobe+9	Array Bucket Sort+6
349. Intersection of Two Arrays	Solve	Easy	Adobe+7	Array Binary Search+3
350. Intersection of Two Arrays II	Solve	Easy	Adobe+4	Array Binary Search+3
354. Russian Doll Envelopes	Solve	Hard	Google+1	Array Binary Search+2
358. Rearrange String k Distance Apart	Solve	Hard	Google+3	Counting Greedy+4
360. Sort Transformed Array	Solve	Medium	LinkedIn	Array Math+2
368. Largest Divisible Subset	Solve	Medium	Google	Array Dynamic Programming+2
378. Kth Smallest Element in a Sorted Matrix	Solve	Medium	Adobe+7	Array Binary Search+3
389. Find the Difference	Solve	Easy	Adobe+4	Bit Manipulation Hash Table+2
406. Queue Reconstruction by Height	Solve	Medium	Facebook	Array Binary Indexed Tree+2
414. Third Maximum Number	Solve	Easy	Amazon+2	Array Sorting
435. Non-overlapping Intervals	Solve	Medium	Amazon+7	Array Dynamic Programming+2
436. Find Right Interval	Solve	Medium	Amazon+1	Array Binary Search+1
451. Sort Characters By Frequency	Solve	Medium	Amazon+4	Bucket Sort Counting+4
452. Minimum Number of Arrows to Burst Balloons	Solve	Medium	Facebook+2	Array Greedy+1
455. Assign Cookies	Solve	Easy	Apple	Array Greedy+2
462. Minimum Moves to Equal Array Elements II	Solve	Medium	Microsoft	Array Math+1
475. Heaters	Solve	Medium	Amazon+1	Array Binary Search+2
502. IPO	Solve	Hard	Uber	Array Greedy+2
506. Relative Ranks	Solve	Easy	Accenture+1	Array Heap (Priority Queue)+1
522. Longest Uncommon Subsequence II	Solve	Medium	Apple	Array Hash Table+3
524. Longest Word in Dictionary through Deleting	Solve	Medium	Google	Array Sorting+2
527. Word Abbreviation	Solve	Hard	Google+1	Array Greedy+3