Oasis SDE Interview Questions and Answers

There was three technical questions of Java level is intermediate to hard

Q1. My intro and about my projects.
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Q1. My intro and my knowledge in DSA,os,cn,DBMS,Java and other subjects too
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They give 5 coding questions in a sheet. Three Java questions one dsa question and one SQL query.

Q1. Merge sort complexity and many other questions
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Q1. Polyfills of mapReduce, filter
Ans. 
Polyfills for mapReduce and filter functions in JavaScript
• Polyfill for map function: Array.prototype.map = function(callback) { ... }

• Polyfill for filter function: Array.prototype.filter = function(callback) { ... }

• Example: Array.prototype.map = function(callback) { return this.reduce((acc, curr) => { acc.push(callback(curr)); return acc; }, []); }
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Asked aptitude questions, core CS, Hadoop and DSA

Q1. Basic DSA and SQL
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Q2. Basic sorting algorithms
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Q3. SQL queries to edit, update etc
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Q1. Basic DSA and JS
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Q1. Generic HR questions
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