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Palo Alto Networks SDE 1

The 49 highest-frequency questions from all time. Finish the strongest signals first.

Updated weekly · Latest source check: 13 Oct 2026ⓘLatest successful check of the sources used by this company. A check does not necessarily mean the questions changed.

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Top questions 49

Done	Question	LeetCode
Mark LRU Cache completed	LRU Cache	Solve
Mark Find the Longest Equal Subarray completed	Find the Longest Equal Subarray	Solve
Mark Logger Rate Limiter completed	Logger Rate Limiter	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark String Compression completed	String Compression	Solve
Mark Decode String completed	Decode String	Solve
Mark Design HashMap completed	Design HashMap	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Minimum Number of Food Buckets to Feed the Hamsters completed	Minimum Number of Food Buckets to Feed the Hamsters	Solve
Mark Search in Rotated Sorted Array completed	Search in Rotated Sorted Array	Solve
Mark Add Two Numbers completed	Add Two Numbers	Solve
Mark Advantage Shuffle completed	Advantage Shuffle	Solve
Mark Binary Tree Level Order Traversal completed	Binary Tree Level Order Traversal	Solve
Mark Insert Delete GetRandom O(1) completed	Insert Delete GetRandom O(1)	Solve
Mark Integer to Roman completed	Integer to Roman	Solve
Mark Linked List Cycle completed	Linked List Cycle	Solve
Mark Longest Common Prefix completed	Longest Common Prefix	Solve
Mark Median of Two Sorted Arrays completed	Median of Two Sorted Arrays	Solve
Mark Min Stack completed	Min Stack	Solve
Mark Restore IP Addresses completed	Restore IP Addresses	Solve
Mark Reverse Linked List II completed	Reverse Linked List II	Solve
Mark Subarray Sum Equals K completed	Subarray Sum Equals K	Solve
Mark Top K Frequent Words completed	Top K Frequent Words	Solve
Mark Basic Calculator completed	Basic Calculator	Solve
Mark Basic Calculator II completed	Basic Calculator II	Solve
Mark Binary Tree Zigzag Level Order Traversal completed	Binary Tree Zigzag Level Order Traversal	Solve
Mark Couples Holding Hands completed	Couples Holding Hands	Solve
Mark Design Twitter completed	Design Twitter	Solve
Mark Diameter of Binary Tree completed	Diameter of Binary Tree	Solve
Mark Invert Binary Tree completed	Invert Binary Tree	Solve
Mark Koko Eating Bananas completed	Koko Eating Bananas	Solve
Mark Longest Palindromic Substring completed	Longest Palindromic Substring	Solve
Mark Maximum Length of a Concatenated String with Unique Characters completed	Maximum Length of a Concatenated String with Unique Characters	Solve
Mark Maximum Profit in Job Scheduling completed	Maximum Profit in Job Scheduling	Solve
Mark Meeting Rooms completed	Meeting Rooms	Solve
Mark Merge Two Sorted Lists completed	Merge Two Sorted Lists	Solve
Mark Multiply Strings completed	Multiply Strings	Solve
Mark Open the Lock completed	Open the Lock	Solve
Mark Path Sum completed	Path Sum	Solve
Mark Path Sum II completed	Path Sum II	Solve
Mark Reconstruct Itinerary completed	Reconstruct Itinerary	Solve
Mark Remove Zero Sum Consecutive Nodes from Linked List completed	Remove Zero Sum Consecutive Nodes from Linked List	Solve
Mark Reverse Nodes in k-Group completed	Reverse Nodes in k-Group	Solve
Mark Sliding Window Maximum completed	Sliding Window Maximum	Solve
Mark Two Sum completed	Two Sum	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark Word Break completed	Word Break	Solve