Uber Interview Questions, Process, and Tips

It was on leetcode bus routes problem

Q1. What is ai and deep learning
Ans. 
AI is the simulation of human intelligence processes by machines, while deep learning is a subset of AI that uses neural networks to learn from data.
• AI involves machines performing tasks that typically require human intelligence, such as visual perception, speech recognition, decision-making, and language translation.

• Deep learning is a subset of AI that uses neural networks with many layers to learn from large amounts ...read more
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Q1. Desing crickinfo
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Q1. Scenario based question.
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Q1. Scwnario based question.
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Platform: Code Signal, Duration: 90 mins, Topics: DSA

Q1. Questions based on Graphs
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Q2. Question based on Linked List
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Leetcode medium questions, 45 mins

Q1. HLD question - cant disclose
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Q2. Design LRU cache
Ans. 
Design a data structure for LRU cache with get and put operations, evicting least recently used item when capacity is reached.
• Implement a doubly linked list to keep track of the order of keys based on their usage

• Use a hashmap to store key-value pairs for quick access

• Update the linked list and hashmap accordingly when get or put operations are performed
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Q1. Design a payment system for credit cards
Ans. 
Design a secure and efficient payment system for credit cards
• Implement tokenization to securely store credit card information

• Use encryption to protect sensitive data during transactions

• Integrate with payment gateways like Stripe or PayPal for processing payments

• Implement fraud detection algorithms to prevent unauthorized transactions
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