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DSA Problems

Practice real interview questions and track your progress

64 problems

#	Title	Topics	Acceptance	Difficulty
1	Alien Dictionary	String	47.81%	Hard
2	All Paths With Given Sum	Tree Traversal Binary Tree	74.23%	Medium
3	Binary Tree Cameras	Tree Traversal Binary Tree	55.21%	Hard
4	Binary Tree Inorder Traversal	Recursion Trees Traversal Binary Tree	75.68%	Easy
5	Binary Tree Level Order Traversal	Tree Recursion Traversal Binary Tree	79.68%	Easy
6	Binary Tree Post Order Traversal	Tree Recursion Traversal Binary Tree	79.59%	Easy
7	Binary Tree Preorder Traversal	Tree Recursion Binary Tree	79.85%	Easy
8	Binary Tree Zigzag Level Order Traversal	Tree Recursion Traversal Binary Tree	71.48%	Medium
9	Bitonic Point	Searching Algorithm	58.67%	Easy
10	Boundary Traversal	Tree Traversal Binary Tree	45.21%	Hard
11	Check Binary Tree Is Balanced	Tree Traversal Binary Tree	78.95%	Medium
12	Check if Tree is Symmetric	Tree Traversal Binary Tree	74.98%	Medium
13	Check if Two Trees are Identical	Tree Traversal Binary Tree	76.59%	Medium
14	Compare Leaf Traversal	Tree Traversal Binary Tree	77.95%	Medium
15	Construct Tree from Inorder + Postorder	Tree Traversal Binary Tree	65.12%	Medium
16	Construct Tree from Inorder + Preorder	Tree Traversal Binary Tree	70.00%	Medium
17	Convert Sorted Array to BST	Tree Traversal Binary Tree	74.56%	Medium
18	Count Leaf Nodes In Binary Tree	Tree Traversal Binary Tree	74.59%	Medium
19	Count Non-Leaf Nodes In Binary Tree	Tree Traversal Binary Tree	60.48%	Easy
20	Count Total Nodes in Binary Tree	Tree Traversal Binary Tree	75.68%	Medium
21	Course Schedule	Graph BFS DFS	51.77%	Medium
22	Delete Node In BST	Tree Traversal Binary Tree	65.20%	Medium
23	DFS Traversal	Graph DFS Traversal	85.64%	Easy
24	Diameter of Binary Tree	Tree Traversal Binary Tree	73.45%	Medium
25	Find Distance Between Two Nodes	Tree Traversal Binary Tree	62.45%	Medium
26	Find Kth Rotation	Array Stack Searching Algorithm	23.16%	Easy
27	Find Maximum in BST	Tree Traversal Binary Tree	85.54%	Easy
28	Find Minimum in BST	Tree Traversal Binary Tree	85.18%	Easy
29	Find Nodes at Distance K from Given Node	Tree Traversal Binary Tree	65.95%	Hard
30	Find the String	String	72.98%	Hard
31	First Occurrence In A String	String	50.08%	Medium
32	Form Anagram Groups	String Hashing	69.80%	Medium
33	Height / Max Depth of Binary Tree	Tree Traversal Binary Tree	75.36%	Medium
34	Inorder Successor in BST	Tree Traversal Binary Tree	60.12%	Medium
35	K-Pangrams	String Hashing	20.91%	Medium
36	Kth Largest Element in BST	Tree Traversal Binary Tree	70.53%	Medium
37	Kth Smallest Element in BST	Tree Traversal Binary Tree	76.77%	Medium
38	Length of the longest substring	String	50.00%	Medium
39	Longest Common Prefix	Array String	44.20%	Easy
40	Longest Common Subsequence	Array String Dynamic Programming	50.00%	Medium
41	Longest Palindromic Substring	String	34.80%	Medium
42	Lowest Common Ancestor in BST	Tree Traversal Binary Tree	70.50%	Medium
43	Lowest Common Ancestor of Binary Tree	Tree Traversal Binary Tree	78.59%	Medium
44	Making A Large Island	Graph BFS DFS	52.36%	Hard
45	Maximum Path Sum in Binary Tree	Tree Traversal Binary Tree	58.59%	Hard
46	Maximum Root to Leaf Path Sum	Tree Traversal Binary Tree	72.15%	Medium
47	Minimum Depth of Binary Tree	Tree Traversal Binary Tree	60.25%	Medium
48	Permutation of A String	String Recursion	66.00%	Medium
49	Print All Root To Leaf Paths	Tree Traversal Binary Tree	68.59%	Hard
50	Redundant Parenthesis	String Stack	51.49%	Hard