Zenefits

21 LeetCode interview questions

Difficulty Distribution

Easy

24%

Medium

52%

Hard

24%

Title	Difficulty	Acceptance	Frequency	Topics
Median of Two Sorted Arrays	Hard	45.9%	100.0%	ArrayBinary SearchDivide and Conquer
Valid Parentheses	Easy	43.7%	100.0%	StringStack
Generate Parentheses	Medium	78.2%	100.0%	StringDynamic ProgrammingBacktracking
Trapping Rain Water	Hard	66.8%	100.0%	ArrayTwo PointersDynamic Programming+2
N-Queens II	Hard	78.1%	100.0%	Backtracking
Convert Sorted List to Binary Search Tree	Medium	65.9%	100.0%	Linked ListDivide and ConquerTree+2
Valid Palindrome	Easy	52.8%	100.0%	Two PointersString
LRU Cache	Medium	46.8%	100.0%	Hash TableLinked ListDesign+1
Min Stack	Medium	57.7%	100.0%	StackDesign
Excel Sheet Column Title	Easy	45.7%	100.0%	MathString
Majority Element	Easy	66.1%	100.0%	ArrayHash TableDivide and Conquer+2
Number of Islands	Medium	63.8%	100.0%	ArrayDepth-First SearchBreadth-First Search+2
Reverse Linked List	Easy	80.3%	100.0%	Linked ListRecursion
Course Schedule	Medium	50.8%	100.0%	Depth-First SearchBreadth-First SearchGraph Theory+1
Course Schedule II	Medium	55.0%	100.0%	Depth-First SearchBreadth-First SearchGraph Theory+1
Majority Element II	Medium	55.8%	100.0%	ArrayHash TableSorting+1
Sliding Window Maximum	Hard	48.4%	100.0%	ArrayQueueSliding Window+2
Flatten 2D Vector	Medium	50.4%	100.0%
Verify Preorder Sequence in Binary Search Tree	Medium	51.7%	100.0%
Graph Valid Tree	Medium	49.8%	100.0%
Shortest Distance from All Buildings	Hard	44.8%	100.0%

Showing 21 of 21 questions