Design a scalable and efficient system for processing online payments, considering factors such as security, reliability, and performance
Entry Level Software Engineer Interview Questions
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I was asked to solve a question similar to underground system
Determine if string has valid parens
Phone interview: 2 questions on sorting and hashmap. On-site round 1: Find element index in rotated string Sort one string based on order given in another string On-site round 2: BST recursive and iterative, max product of 3 numbers in an array
Asking me about the running time about algorithms I had not really coded up (on paper) but just talked about.
2 array of strings, return the difference item and common item of these arrays
Algo design and data structure
leetcode: division evaluate word wordwordwordword
Design a class with two methods: `addPair` and `getRate`. Add pair takes a bank, currency pair, and exchange rate. Get rate returns the average rate for a given currency pair across all banks. Get rate should run in `O(1)` time.
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