Latest DSA Problems & Practice | Improve Coding with ScholarHat

DSA Problems

Practice real interview questions and track your progress

64 problems

#	Title	Topics	Acceptance	Difficulty
1	DFS Traversal	Graph DFS Traversal	85.64%	Easy
2	Remove Duplicates From A String	String Stack	61.68%	Easy
3	Binary Tree Cameras	Tree Traversal Binary Tree	55.21%	Hard
4	Boundary Traversal	Tree Traversal Binary Tree	45.21%	Hard
5	Compare Leaf Traversal	Tree Traversal Binary Tree	77.95%	Medium
6	Binary Tree Post Order Traversal	Tree Recursion Traversal Binary Tree	79.59%	Easy
7	Inorder Successor in BST	Tree Traversal Binary Tree	60.12%	Medium
8	Kth Largest Element in BST	Tree Traversal Binary Tree	70.53%	Medium
9	Construct Tree from Inorder + Postorder	Tree Traversal Binary Tree	65.12%	Medium
10	Top View of Binary Tree	Tree Traversal Binary Tree	60.21%	Medium
11	Convert Sorted Array to BST	Tree Traversal Binary Tree	74.56%	Medium
12	Find Maximum in BST	Tree Traversal Binary Tree	85.54%	Easy
13	Find Minimum in BST	Tree Traversal Binary Tree	85.18%	Easy
14	Find Distance Between Two Nodes	Tree Traversal Binary Tree	62.45%	Medium
15	All Paths With Given Sum	Tree Traversal Binary Tree	74.23%	Medium
16	Maximum Root to Leaf Path Sum	Tree Traversal Binary Tree	72.15%	Medium
17	Count Non-Leaf Nodes In Binary Tree	Tree Traversal Binary Tree	60.48%	Easy
18	Minimum Depth of Binary Tree	Tree Traversal Binary Tree	60.25%	Medium
19	Construct Tree from Inorder + Preorder	Tree Traversal Binary Tree	70.00%	Medium
20	Right View of Binary Tree	Tree Traversal Binary Tree	74.36%	Medium
21	Lowest Common Ancestor in BST	Tree Traversal Binary Tree	70.50%	Medium
22	Kth Smallest Element in BST	Tree Traversal Binary Tree	76.77%	Medium
23	Maximum Path Sum in Binary Tree	Tree Traversal Binary Tree	58.59%	Hard
24	Delete Node In BST	Tree Traversal Binary Tree	65.20%	Medium
25	Validate BST	Tree Traversal Binary Tree	45.23%	Medium
26	Search / Insert into BST	Tree Traversal Binary Tree	89.54%	Easy
27	Find Nodes at Distance K from Given Node	Tree Traversal Binary Tree	65.95%	Hard
28	Lowest Common Ancestor of Binary Tree	Tree Traversal Binary Tree	78.59%	Medium
29	Print All Root To Leaf Paths	Tree Traversal Binary Tree	68.59%	Hard
30	Root To Leaf Path Sum	Tree Traversal Binary Tree	78.56%	Medium
31	Diameter of Binary Tree	Tree Traversal Binary Tree	73.45%	Medium
32	Check Binary Tree Is Balanced	Tree Traversal Binary Tree	78.95%	Medium
33	Check if Tree is Symmetric	Tree Traversal Binary Tree	74.98%	Medium
34	Check if Two Trees are Identical	Tree Traversal Binary Tree	76.59%	Medium
35	Count Leaf Nodes In Binary Tree	Tree Traversal Binary Tree	74.59%	Medium
36	Count Total Nodes in Binary Tree	Tree Traversal Binary Tree	75.68%	Medium
37	Height / Max Depth of Binary Tree	Tree Traversal Binary Tree	75.36%	Medium
38	Binary Tree Zigzag Level Order Traversal	Tree Recursion Traversal Binary Tree	71.48%	Medium
39	Binary Tree Level Order Traversal	Tree Recursion Traversal Binary Tree	79.68%	Easy
40	Binary Tree Inorder Traversal	Recursion Trees Traversal Binary Tree	75.68%	Easy
41	Binary Tree Preorder Traversal	Tree Recursion Binary Tree	79.85%	Easy
42	Permutation of A String	String Recursion	66.00%	Medium
43	Smallest window of 0, 1 and 2	String	50.00%	Easy
44	Roman Number to Integer	String	43.21%	Easy
45	Longest Palindromic Substring	String	34.80%	Medium
46	Form Anagram Groups	String Hashing	69.80%	Medium
47	Longest Common Prefix	Array String	44.20%	Easy
48	Length of the longest substring	String	50.00%	Medium
49	Smallest Window of All Characters	String Dynamic Programming	50.00%	Hard
50	Bitonic Point	Searching Algorithm	58.67%	Easy