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Zscaler Hiring Challenge OA 2022 | Replace Words with Root (Trie-Based Stemmer)
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Padala Indira Bhavani
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Uber OA 2026 | Alternating Sign Grid DP & Top K Frequent Elements
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Societe Generale OA 2026 | Distinct Subarrays with K Odd Numbers & Project Dependency Cycle Detection
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Sahil Jain
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IBM HackerRank OA 2026 | High-Load Timestamp Detection & Minimum Supplier Acquisition Cost
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GE Vernova Coding OA (2021) | Backtracking Algorithms | On-campus
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Mastercard Internship OA September 2023
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Recent Replies
Answer: Nutanix Associate Developer Interview Questions 2025 April | Matrices
by
Pravardhan Aare
• 0
Solution 1: Rotate Image — Transpose then Reverse Rows Core Insight A 90-degree clockwise rotation is mathematically equivalent…
Answer: Twilio SDE Interview Question 2021 December | Trees | on-campus
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Solution: Post-Order DFS with Global Maximum Tracking Core Insight At every node, a path can either: (1) extend upward through the pa…
Answer: Snowflake SDE Interview Question 2022 August | Heaps | on-campus
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Solution: Two Heaps (Max-Heap + Min-Heap) Core Insight Maintain two heaps that split the stream at the median point: a max-heap (left…
Answer: Shopify SDE Interview Question 2024 June | Arrays: Product of Array Except Self
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Solution: Prefix and Suffix Product (Space Optimized) Core Insight For every index i, the answer is: product of all elements to the L…
Answer: Shopify SDE Interview Question 2024 June | Arrays: Product of Array Except Self
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Solution: Prefix and Suffix Product (Space Optimized) Core Insight For every index i, the answer is: product of all elements to the L…
Answer: Thoughtworks Associate Developer Interview Question 2023 October | Graphs and To
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Solution: BFS Topological Sort (Kahn's Algorithm) Core Insight Model the problem as a directed graph where each course is a node …
Answer: Square SDE Interview Question 2022 November | Dynamic Programming | on-campus
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Solution: Bottom-Up Dynamic Programming (Space Optimized) Core Insight DP state: dp[i] = number of ways to decode the first i charact…
Answer: Stripe SDE Interview Question 2025 January | Sliding Window | on-campus
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Pravardhan Aare
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Solution: Variable-Size Sliding Window with Two HashMaps Core Insight Use two frequency maps: need (required counts from t) and windo…
Answer: DoorDash SDE Interview Question 2024 March | Greedy | on-campus
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Solution: Greedy with Jump Window Tracking Core Insight Think of each jump as a window/level. Within the current window, greedily fin…
Answer: LinkedIn SDE Interview Question 2022 September | Dynamic Programming | on-campus
by
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Solution: Bottom-Up Dynamic Programming Core Insight DP state: dp[i] = true means the substring s[0..i-1] can be formed using diction…
Answer: Uber SDE Interview Question 2023 July | Arrays and Hashing | on-campus
by
Pravardhan Aare
• 0
Solution: HashSet with Sequence Start Detection Core Insight Insert all elements into a HashSet for O(1) lookups. Only start counting…
Answer: Rippling SDE Interview Question 2025 February | Backtracking | on-campus
by
Pravardhan Aare
• 0
Solution: Backtracking with Duplicate Pruning Core Insight The critical pruning rule: skip nums[i] if nums[i] == nums[i-1] AND !used[…
Answer: Palantir SDE Interview Question 2021 November | Monotonic Stack | On-campus
by
Pravardhan Aare
• 0
Solution: Monotonic Increasing Stack Core Insight For any bar i, the max rectangle with height h[i] extends left/right until a shorte…
Answer: Coinbase SDE Interview Question 2024 January | Binary Search on Answer Space |
by
Pravardhan Aare
• 0
Solution: Binary Search on the Answer Space Core Insight We do NOT binary search the piles array. We binary search the answer space […
Answer: Databricks SDE Interview Question 2022 March | Dynamic Programming: Partition Eq
by
Pravardhan Aare
• 0
Solution: 0/1 Knapsack DP (Space Optimized) Core Insight This is a disguised 0/1 Knapsack problem. Target = totalSum / 2. We ask: &qu…
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