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Answer: PayPal OA Question 2024 April | Matrix | on-campus by Pravardhan Aare • 0
Solution: Rotate Image — Transpose & Flip Approach Rotating an n x n matrix 90 degrees clockwise in-place can be broken dow…
Answer: ServiceNow OA Question 2024 May | Trees | on-campus by Pravardhan Aare • 0
Solution: Lowest Common Ancestor — Recursive Depth First Search Approach We can solve this problem recursively by traversing th…
Answer: Adobe OA Question 2024 March | Dynamic Programming | on-campus by Pravardhan Aare • 0
Solution : Coin Change — Dynamic Programming Approach This is a classic optimization problem that can be solved using **Dynamic…
Answer: Google OA Question 2024 February | Monotonic Stack | on-campus by Pravardhan Aare • 0
Solution : Daily Temperatures — Monotonic Stack Approach A naive approach of checking future days for each index takes O(N2) ti…
Answer: Oracle OA Question 2024 June | Graphs & Topological Sort | on-campus by Pravardhan Aare • 0
Solution : Course Schedule II — Kahn's Algorithm (BFS) Approach This problem can be modeled as finding a topological sort o…
Answer: Amazon OA Question 2024 May | Heap & Quickselect | on-campus by Pravardhan Aare • 0
Solution : Kth Largest Element — Min-Heap Approach While sorting the array takes O(N log N) time, we can optimize this using a …
Answer: Microsoft OA Question 2024 April | Trees & BFS | on-campus by Pravardhan Aare • 0
Solution 1: Binary Tree Level Order Traversal — BFS Traversal Approach We can solve this problem using a Breadth-First Search (…
Answer: BYJU'S TUTOR PLUS Hiring | On-Campus OA (2024) | Count the Digits That Divide a by Padala Indira Bhavani • 0
Approach Store the original number. Extract digits one by one using modulo operation. Ignore digit 0. If num % digit == 0, incr…
Answer: FIBE (EARLY SALARY) Hiring Challenge | Off-Campus | OA (2024) by Padala Indira Bhavani • 0
Approach Use a HashMap to store frequencies of previously seen numbers. For each number: Check how many times (num - k) appeare…
Answer: INSTAMOJO Online Assessment Interview Question | On-Campus(2024) by Padala Indira Bhavani • 0
Approach For every rectangle, reduce its ratio using GCD. Store the reduced ratio in a HashMap. If the same ratio has appeared be…
Answer: AMEYO Hiring Challenge | Online Assessment Question | Off-Campus (2024) by Padala Indira Bhavani • 0
Approach Instead of creating large concatenated strings, compare characters directly using two pointers. Maintain: Current word…
Answer: EASYREWARDZ On-Campus OA (2024) | Minimum Average Difference by Padala Indira Bhavani • 0
Approach Compute: Total sum of array Running prefix sum For every index: leftAvg = prefixSum / (i + 1) rightAvg = (to…
Answer: PROGCAP Hiring | Off-Campus OA (2024) | Count Number of Texts by Padala Indira Bhavani • 0
Approach Use Dynamic Programming. Let: dp[i] represent the number of ways to decode the first i characters. For every posi…
Answer: SQUADSTACK Hiring Challenge | Interview Question | On-Campus OA (2023) by Padala Indira Bhavani • 0
Approach Let: dp[i] = number of ways to reach stair i For stair i, the last jump could be: 1 step from i-1 2 steps from …
Answer: SERVIFY Hiring | Number of Common Factors | Off-Campus OA (2023) by Padala Indira Bhavani • 0
Approach A number that divides both a and b must also divide their Greatest Common Divisor (GCD). Therefore: Find gcd(a, b). …

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