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Backend Engineer Interview Questions
14,385 backend engineer interview questions shared by candidates
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How to find sum query efficiently in real-time when starting index and the end index is given a stream of numbers?
Print the next greater element for each element in the array.
backend assignment
Question on BFS
Basic questions of javascript and MySQL
function main() { const ws = fs.createWriteStream(process.env.OUTPUT_PATH); const sentence = readLine(); // const sentence = "b? Dl )B 4(V! A. MK, YtG ](f 1m )CNxuNUR {PG? " const result = howMany(sentence); ws.write(result + '\n'); ws.end(); }
Codility assessment: Minimum number of characters to delete from a string so that each character appears unique number of times. Note: You can delete all occurances of characters. eg: "aaaabbbb" -> 1 "a" or 1"b" would make "a" and "b" appear unique number of times. Given number in binary form, if its even -> you can divide it by 2; if its odd -> you can substract 1 from it. You can repeat above steps as many times as you want to reach 0. How many steps it took to reach zero? SQL question to select records from two tables using joins etc.
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