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DevEval
For companies
Sample report
Pricing
For developers
Problems
Linked List
Topic
Linked List problems
18 problems: 6 easy, 9 medium, 3 hard.
Easy (6)
Detect Cycle in Linked List
Path Sum
Univalued Binary Tree
Cousins in Binary Tree
Sum of Left Leaves
Find Center of Star Graph
Medium (9)
Network Delay Time
Remove Duplicates from Sorted List II
Minimum Height Trees
Shortest Path with Alternating Colors
Construct Quad Tree
Find Bottom Left Tree Value
Find Eventual Safe States
Longest ZigZag Path in Binary Tree
Amount of Time for Binary Tree to Be Infected
Hard (3)
Critical Connections in a Network
Reachable Nodes In Subdivided Graph
Longest Path With Different Adjacent Characters
Other topics
Array
437
String
167
Math
140
SQL
80
Machine Learning
59
General
51
Data Engineering
50
Matrix
26
Greedy
24
Statistics
19
Binary Search
15
Graph
13
Sorting
13
Dynamic Programming
11
Bit Manipulation
9
Hash Table
9
Backend Systems
6
Simulation
5
Tree
5
Probability
4
Sliding Window
3
Stack
3
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