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Answer: POSTMAN Hiring Off-Campus | Find All Groups of Farmland Question | OA(2022) by Padala Indira Bhavani • 0
Approach Whenever we encounter a farmland cell (1), it represents the top-left corner of a new farmland group. Since every farmland r…
Answer: SHARECHAT Hiring On-Campus OA (2021) | Problem Longest ZigZag Path in a Binary by Padala Indira Bhavani • 0
Approach This problem can be solved efficiently using Depth First Search (DFS). At every node: If the previous move was left, t…
Answer: UNACADEMY Hiring Off-Campus OA (2021) Problem Maximum Number of Vowels in a Sub by Padala Indira Bhavani • 0
Approach A brute-force approach would check every substring of length k and count vowels inside it. This would require: O(n × k)…
Answer: BROWSERSTACK Hiring On-Campus OA (2021) | Problem Bulls and Cows by Padala Indira Bhavani • 0
Approach The problem requires counting: Bulls → matching digit at the same position. Cows → matching digits at differe…
Answer: Databricks SDE OA 2025 | Petabyte Scale Dot Product & Spark Cluster Job Executio by Sahil Jain • 0
Solution - Petabyte Scale Dot Product Strategy Since both sparse vectors are already sorted by index, use the Two Pointer technique t…
Answer: OpenAI MTS OA 2026 | Transactional Key Value Store & Token Context Window Utiliz by Sahil Jain • 0
Solution - Transactional Key Value Store Strategy Maintain a stack of hash maps where each map represents a transaction layer. The…
Answer: CoinDCX SDE OA 2025 | Suspicious Transaction Ring & Smart Contract Ledger by Sahil Jain • 0
Solution - Suspicious Transaction Ring Strategy Model wallet transfers as a directed graph and detect whether any cycle exists. Ap…
Answer: MongoDB SDE OA 2025 | B-Tree Index Scan Intersection & MVCC Time Travel Store by Sahil Jain • 0
Solution - B-Tree Index Scan Intersection Strategy Perform a K-Way Merge using a Min Heap to process sorted index scans efficiently. …
Answer: Tower Research Capital SDE-1 OA 2025 | Arbitrage Detector & Limit Order Book Mat by Sahil Jain • 0
Solution - Arbitrage Detector Strategy Transform multiplicative exchange rates into additive edge weights using logarithms and detect…
Answer: Uber SDE OA 2025 | Concatenated Multiples of K & Uber Surge Equilibrium by Sahil Jain • 0
Solution - Concatenated Multiples of K Strategy Use Modulo Arithmetic and Length-Based Hash Maps to count valid concatenation pairs e…
Answer: Nvidia SDE OA 2025 | Semiconductor Signal Routing & Parallel Trace Routing by Sahil Jain • 0
Solution - Semiconductor Signal Routing Strategy Greedy Bit-by-Bit Validation combined with BFS Reachability Checking. Approach …
Answer: Unacademy SDE OA 2024 | Educator Network & Gamification Target by Sahil Jain • 0
Solution - Educator Network Strategy Apply Tree Dynamic Programming using DFS and maintain two states for every node: selected and no…
Answer: Jio SDE OA 2024 | Maximize Network Points & JioFiber Grid Routing by Sahil Jain • 0
Solution - Maximize Network Points Strategy Use a Greedy Stack-based approach that removes the higher-value substring first and the l…
Answer: CrowdStrike SDE-1 OA 2025 | Malicious Subnet Filtering & Bypassing the Firewall by Sahil Jain • 0
Solution - Malicious Subnet Filtering Strategy Store all blocked subnet prefixes in a Trie and perform efficient prefix matching for …
Answer: Dream11 SDE-1 OA 2025 | Fantasy Team Selection & Master Server Placement by Sahil Jain • 0
Solution - Fantasy Team Selection Strategy Use Constrained 0/1 Knapsack Dynamic Programming where both budget and number of selected …
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