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Web Applications Engineer Interview Questions


Web applications engineer interview questions shared by candidates

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How to discover if the given number is Power of 2 ?

4 Answers

10=2 100=4 1000=8… Caught the thing .. he didn't like my implementation. don't be nervous!

return (( x!=0) && (x & (x -1) == 0)) a number which is power of two will have single 1 in binary representation ex. 16 00010000 x-1 will have pattern 00001111 hence x&(x-1) will always be 0 for power of two numbers. Need to check condition for x!=0 since 0 is not a power of two. Special case to handle.

if you can figure this out inside an hour, congratulations this isnt something that should be in an interview to be honest the level of difficulty of the answer that algo came up with is at the level of an upper division course that has a proof of it written in wikipedia i honestly like the brute force solution

Binary tree , left node has smallest value . Print 5 10 20 25 and then “count of nodes=4”…

2 Answers

Asynchronous syntax

1 Answer

What is CSS specificity?

2 Answers

16 bit number: how to change the bits 0 with 1, 2 with 3 etc..

1 Answer

How to found first unrepeated character in the string. “abca” return “b”

1 Answer

Can a Java file have more than one public class in it?

1 Answer

write class implements Queue with ability to set Priority for an item of the Queue

1 Answer

We have 100 teams who perform testing. They all produce the testing results in different formats such as mysql, binary bits, xml, json, nosql,etc. Your task is to show all this in a web application within one week. How would you do it in one week and keep this constraint in mind that the results from these 100 teams are in different formats so your API should be able to work with all the different format.

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