Palo Alto Networks Interview Questions — 26 DSA Problems

25 problems with full solutions in Python, Java, C++, JavaScript, Go, Rust.

Most frequently asked Palo Alto Networks LeetCode questions for software engineering interviews.

• LRU Cache (MEDIUM) — Hash Table, Linked List, Design, Doubly-Linked List
• Find the Longest Equal Subarray (MEDIUM) — Array, Hash Table, Binary Search, Sliding Window
• Longest Substring Without Repeating Characters (MEDIUM) — Hash Table, String, Sliding Window
• Median of Two Sorted Arrays (HARD) — Array, Binary Search, Divide and Conquer
• String Compression (MEDIUM) — Two Pointers, String
• Meeting Rooms (EASY) — Array, Sorting
• Insert Delete GetRandom O(1) (MEDIUM) — Array, Hash Table, Math, Design, Randomized
• Sliding Window Maximum (HARD) — Array, Queue, Sliding Window, Heap (Priority Queue), Monotonic Queue
• Minimum Path Sum (MEDIUM) — Array, Dynamic Programming, Matrix
• Two Sum (EASY) — Array, Hash Table
• Min Stack (MEDIUM) — Stack, Design
• Binary Tree Level Order Traversal (MEDIUM) — Tree, Breadth-First Search, Binary Tree
• Maximum Length of a Concatenated String with Unique Characters (MEDIUM) — Array, String, Backtracking, Bit Manipulation
• Group Anagrams (MEDIUM) — Array, Hash Table, String, Sorting
• Word Break (MEDIUM) — Array, Hash Table, String, Dynamic Programming, Trie, Memoization
• Design HashMap (EASY) — Array, Hash Table, Linked List, Design, Hash Function
• Merge Sorted Array (EASY) — Array, Two Pointers, Sorting
• Merge Two Sorted Lists (EASY) — Linked List, Recursion
• Integer to Roman (MEDIUM) — Hash Table, Math, String
• Shortest Path in Binary Matrix (MEDIUM) — Array, Breadth-First Search, Matrix
• Top K Frequent Words (MEDIUM) — Array, Hash Table, String, Trie, Sorting, Heap (Priority Queue), Bucket Sort, Counting
• Longest Palindromic Substring (MEDIUM) — Two Pointers, String, Dynamic Programming
• Valid Parentheses (EASY) — String, Stack
• Restore IP Addresses (MEDIUM) — String, Backtracking
• Search in Rotated Sorted Array (MEDIUM) — Array, Binary Search
• Basic Calculator (HARD) — Math, String, Stack, Recursion