Zenefits Interview Questions — CS-Next ByCompany

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No.	Problem	Difficulty	Frequency
4	Median of Two Sorted Arrays ArrayHeap	Hard	100.0%
20	Valid Parentheses Stack/Queue	Easy	100.0%
22	Generate Parentheses	Medium	100.0%
42	Trapping Rain Water	Hard	100.0%
52	N-Queens II	Hard	100.0%
109	Convert Sorted List to Binary Search Tree TreeBinary Search	Medium	100.0%
125	Valid Palindrome String	Easy	100.0%
146	LRU Cache	Medium	100.0%
155	Min Stack Stack/Queue	Medium	100.0%
168	Excel Sheet Column Title	Easy	100.0%
169	Majority Element	Easy	100.0%
200	Number of Islands GraphMath	Medium	100.0%
206	Reverse Linked List Linked List	Easy	100.0%
207	Course Schedule	Medium	100.0%
210	Course Schedule II	Medium	100.0%
229	Majority Element II	Medium	100.0%
239	Sliding Window Maximum Sliding Window	Hard	100.0%
251	Flatten 2D Vector	Medium	100.0%
255	Verify Preorder Sequence in Binary Search Tree TreeBinary Search	Medium	100.0%
261	Graph Valid Tree TreeGraph	Medium	100.0%
317	Shortest Distance from All Buildings	Hard	100.0%