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Answer: Booking.com OA Question 2024 August | Sliding Window | on-campus
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Solution: Maximum Average Subarray I — Fixed Size Sliding Window Approach Since the subarray length is fixed at k, we use a Fix…
Answer: Qualcomm OA Question 2024 June | Bit Manipulation | on-campus
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Solution: Single Number — XOR Bit Manipulation Approach This problem has an elegant O(1) space solution using the XOR bitwise o…
Answer: Nvidia OA Question 2024 May | Dynamic Programming | on-campus
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• 0
Solution: Coin Change — Bottom-Up Dynamic Programming Approach We use Bottom-Up Dynamic Programming. We build a 1D DP table whe…
Answer: Atlassian OA Question 2024 September | Intervals | on-campus
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Solution: Non-overlapping Intervals — Greedy Sort by End Time Approach This is a classic Greedy problem. The key insight is: to…
Answer: Adobe OA Question 2024 August | Heaps | on-campus
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Solution: K Closest Points to Origin — Max Heap of Size K Approach We use a Max Heap of size K to efficiently track the K close…
Answer: Uber OA Question 2024 June | Binary Search | on-campus
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Solution: Find Minimum in Rotated Sorted Array — Binary Search Approach A linear scan would trivially find the minimum in O(N),…
Answer: Intuit OA Question 2024 August | Stack | on-campus
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Solution: Evaluate Reverse Polish Notation — Stack Simulation Approach Reverse Polish Notation (postfix notation) is naturally …
Answer: Oracle OA Question 2024 June | Intervals & Arrays | on-campus
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Solution: Insert Interval — Linear Partition Approach Since the initial intervals are already sorted, we can solve this in a si…
Answer: Cisco OA Question 2024 May | Graphs & DFS | on-campus
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Solution: Number of Islands — DFS Grid Flood-Fill Approach We can solve this problem by treating the grid as an undirected grap…
Answer: Adobe OA Question 2024 April | Design & Trie | on-campus
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Solution: Implement Trie — Custom TrieNode Arrays Approach To implement a Trie, we use a custom node class called TrieNode. Eac…
Answer: Netflix OA Question 2024 March | Dynamic Programming | on-campus
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Solution: Longest Common Subsequence — 2D Dynamic Programming Approach We solve this using **Dynamic Programming**. Let dp[i][j…
Answer: ByteDance OA Question 2024 February | Graphs | on-campus
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Solution: Clone Graph — BFS with HashMap Approach To create a deep copy of a graph, we must traverse all nodes and replicate th…
Answer: LinkedIn OA Question 2024 June | Trees & BFS | on-campus
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Solution: Binary Tree Right Side View — BFS Level Order Approach Standing on the right side of a binary tree means that at each…
Answer: Tesla OA Question 2024 May | Two Pointers & Sorting | on-campus
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Pravardhan Aare
• 0
Solution: 3Sum Closest — Sort and Two Pointers Approach A brute force solution check of all possible triplets takes O(N3). We c…
Answer: Meta OA Question 2024 April | Two Pointers & Strings | on-campus
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Solution: Valid Palindrome — Two Pointers Approach Instead of copying the string or allocating new memory for a filtered string…
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