Web Applications Engineer Interview Questions | Glassdoor

# Web Applications Engineer Interview Questions

56

Web applications engineer interview questions shared by candidates

## Top Interview Questions

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### Engineer - QCS Server Web Applications Development at Qualcomm was asked...

Jan 26, 2011
 How to discover if the given number is Power of 2 ? 4 Answers10=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 solutionShow More ResponsesDivide the number by 2, and repeat, until the result is a not an integer number (in this case is not a power of 2) or the result is 1 (in this case the number was a power of 2).

### Engineer - QCS Server Web Applications Development at Qualcomm was asked...

Jan 26, 2011
 Binary tree , left node has smallest value . Print 5 10 20 25 and then “count of nodes=4”… 2 Answersrecursion ... defined "current=head" in the method so it doesn't changes ofcourse, even if I sent current.next in recursion... don't be nervous!Did not get this question? Could you please eleborate it more?

### Senior Web Applications Engineer at Leaf Group was asked...

Jun 22, 2012
 Asynchronous syntax1 AnswerMust know the exact syntax

Dec 1, 2018

Dec 1, 2018

### Engineer - QCS Server Web Applications Development at Qualcomm was asked...

Jan 26, 2011
 How to found first unrepeated character in the string. “abca” return “b” 1 Answer??.. Wrote something . don't remember.. don't be nervous!

### Engineer - QCS Server Web Applications Development at Qualcomm was asked...

Jan 26, 2011
 16 bit number: how to change the bits 0 with 1, 2 with 3 etc.. 1 Answernum && 101010101010101= first byte ; num && 0101010101010101 =sec byte, then first shift right, sec shift left and OR operand ” || “ for both..

### Engineer - QCS Server Web Applications Development at Qualcomm was asked...

Jan 26, 2011
 write class implements Queue with ability to set Priority for an item of the Queue 1 AnswerI was so nervous!... it was a firs question.. don't be nervous!

### Web Applications Software Engineer at Digg was asked...

Oct 10, 2011
 What is CSS specificity?2 AnswersSpecificity determines, which CSS rule is applied by browsers. “Specificity is a type of weighting that has a bearing on how your cascading style sheet (CSS) rules are displayed here is very nice article explaining it http://coding.smashingmagazine.com/2007/07/27/css-specificity-things-you-should-know/Here is an excellent Medium article by Dan Eden that elaborates (with examples) how CSS specificity works: https://medium.com/@dte/understanding-css-selector-specificity-a02238a02a59#.t2ffxzs5h

### Software Engineer-web Applications Developer at Coetic was asked...

May 28, 2019
 What programming have you done outside of normal coursework?Be the first to answer this question
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