Latest DSA Problems & Practice | Improve Coding with ScholarHat

DSA Problems

Practice real interview questions and track your progress

238 problems

#	Title	Topics	Acceptance	Difficulty
1	Maximize dot product	Dynamic Programming	13.27%	Medium
2	Count Inversions	Array Sorting Algorithms	16.93%	Medium
3	Minimum sum	Array Sorting Algorithms	17.14%	Medium
4	Pair Sum Closest to 0	Searching Algorithms	19.61%	Easy
5	Next Smallest Palindrome	Array	19.63%	Hard
6	Longest Increasing Subsequence	Array Dynamic Programming	20.00%	Medium
7	Power Of Numbers	Recursion	20.22%	Medium
8	K-Pangrams	String Hashing	20.91%	Medium
9	Number of Pairs	Array	21.82%	Medium
10	Binary Heap Operations	Heap	22.30%	Medium
11	Implement Min Stack	Stack	22.59%	Medium
12	Find Kth Rotation	Array Stack Searching Algorithm	23.16%	Easy
13	Missing And Repeating	Array	24.83%	Easy
14	Super Primes	Searching Algorithms	24.90%	Medium
15	Check for balanced Paranthesis	Stack	28.56%	Easy
16	Stock buy and sell	Array Dynamic Programming	29.18%	Medium
17	Missing In Array	Array Searching Algorithms	29.59%	Easy
18	2Sum - Pair With Given Sum	Array Hashing Hashmap	30.61%	Easy
19	First non-repeating in a stream	Queue	31.65%	Medium
20	Merge Sorted Arrays	Array Sorting Algorithms	32.01%	Easy
21	Histogram Max Rectangular Area	Stack	32.12%	Hard
22	Word Search	Recursion	32.69%	Medium
23	Maximum Meetings in One Room	Array Sorting Algorithms	33.57%	Medium
24	Floor in a Sorted Array	Sorting Algorithms	33.75%	Easy
25	Longest Palindromic Substring	String	34.80%	Medium
26	Tower of Hanoi	Recursion	35.23%	Medium
27	Intersection of Two Linked Lists	Linked List	35.30%	Easy
28	3 Sum	Array Sorting Algorithm	35.80%	Medium
29	Maximum Subarray Sum	Array	36.28%	Medium
30	Search In Rotated Sorted Array	Array Searching Algorithms	37.64%	Medium
31	Find Transition Point	Array Searching Algorithms	37.90%	Easy
32	Rat In A Maze	Recursion	38.00%	Hard
33	Count Smaller elements	Array	38.16%	Hard
34	Smallest factorial number	Searching Algorithms	38.79%	Medium
35	Palindrome Linked List	Linked List	41.48%	Medium
36	Minimum Cost of Ropes	Queue	42.73%	Medium
37	Roman Number to Integer	String	43.21%	Easy
38	Detect Loop in linked list	Linked List	43.49%	Medium
39	Strings Rotations	String	43.83%	Medium
40	Longest Common Prefix	Array String	44.20%	Easy
41	Boundary Traversal	Tree Traversal Binary Tree	45.21%	Hard
42	Validate BST	Tree Traversal Binary Tree	45.23%	Medium
43	Shop in Candy Store	Sorting Algorithms	45.43%	Easy
44	Queue using Linked List	Queue	45.60%	Easy
45	Unique Permutations	String	46.50%	Medium
46	Implement Queue using Arrays	Queue	47.24%	Basic
47	Kth from End of Linked List	Linked List	47.30%	Medium
48	Reverse Words In A String	String	47.80%	Easy
49	Alien Dictionary	String	47.81%	Hard
50	Reverse A String	Recursion	48.00%	Easy