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3,856 engineer developer interview questions shared by candidates

Q. Write code to list duplicates elements from an array Q. Find 3rd max salary of employee table Q. Find salary of employees not equal to 20000 Q.what is OOPS concept. Q. What is polymorphism and why we need same name method. Q. What is abstract class and interface Q. Why we need interface in java. Q. What is hashmap .give implementation of hashmap. How it is different from hashtable. Q. Which collections is best when we want thread safe. Q. What is set and hashmap. Q. What is static? Define each static method,static variable and static class. Q. What is immutable.
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Software Engineer - Java Developer

Interviewed at Genpact

3.7★
Sep 11, 2020

Q. Write code to list duplicates elements from an array Q. Find 3rd max salary of employee table Q. Find salary of employees not equal to 20000 Q.what is OOPS concept. Q. What is polymorphism and why we need same name method. Q. What is abstract class and interface Q. Why we need interface in java. Q. What is hashmap .give implementation of hashmap. How it is different from hashtable. Q. Which collections is best when we want thread safe. Q. What is set and hashmap. Q. What is static? Define each static method,static variable and static class. Q. What is immutable.

Round 1 (Technical) 1) Convert a binary tree to double ended linked list. 2) In an array find the minimum window with sum greater than k. 3) Some LP/Behavioural questions. Round 2 (Technical) 1) 2 Sorted arrays. Find k sorted pairs with greatest sum. Round 3 (Managerial) 1) 30mins of LP/Behavioural questions. 2) Given a lengthy string, and a string of characters. Find the minimum length of string from lengthy string which contains all characters from second string. Round 4 (Bar-Raiser) 1) 45 mins of LP/Behavioural questions. 2) Topological sort of a graph.
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Software Developer Engineer

Interviewed at Amazon

3.5★
Oct 7, 2021

Round 1 (Technical) 1) Convert a binary tree to double ended linked list. 2) In an array find the minimum window with sum greater than k. 3) Some LP/Behavioural questions. Round 2 (Technical) 1) 2 Sorted arrays. Find k sorted pairs with greatest sum. Round 3 (Managerial) 1) 30mins of LP/Behavioural questions. 2) Given a lengthy string, and a string of characters. Find the minimum length of string from lengthy string which contains all characters from second string. Round 4 (Bar-Raiser) 1) 45 mins of LP/Behavioural questions. 2) Topological sort of a graph.

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