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Amazon Core Java Interview Questions

Questions Answers Views Company eMail

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1195

Add a value x to array from index l to r where 0 <= l <= r <= n-1

1131

Implement a stack with push (), pop() and min() in O(1) time.

1159

Find the value of a specified element of the array arr[i] where 0 <= i <= n-1

1032

Convert Binary tree to linked list.

1141

Convert a BST into a DLL and DLL to BST in place.

1156

worst case complexities of Quick sort and Merge sort.

1087

What do you mean by hashing?

1164

What is the definition of tree ?

1126

When can you say a graph to be a tree?

1132

What do you mean by constant time complexity?

1337

Write a program to show whether a graph is a tree or not using adjacency matrix.

1146

You're given a Boolean 2D matrix, can you find the number of islands?

1150

What steps are taken when the OS shifts from one-thread execution to another?

1411

What are the differences between graph and tree?

1155

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Amazon Core Java Interview Questions

Amazon Core Java Interview Questions (30)

Un-Answered Questions

Explain NULL?

1090

How can you use streams api?

580

What does calling preventdefault() on an event do? How is this enforced? : adobe flex action script

Explain asp.net?

1141

what is exclusion range in dhcp server? : Windows server 2003

459

why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

2042

I have the choice of manipulating database data using a byte[] or a java.sql.blob. Which has best performance?

968

when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

2533

Whats is abstraction in oops?

1136

What is a razor file?

1027

In qtp is it possible to check broken links of a page?

1095

Explain res folder in android?

946

How to change a value of the field ‘salary’ as 7500 for an employee_name ‘john’ in a table employee_details?

1487

Which software is used for wordpress?

174

How to include css from controller and view in zend

209