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Web Application Developer 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 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 Show More Responses Divide 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 Answers recursion ... 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?

Jan 1, 2017

Web Applications Developer (Intern) at SimonComputing was asked...

May 4, 2014
 The word problem posed by the interviewer was exceedingly simple; list all prime numbers between two positive integers, m and n. This was the easiest question I have been asked by a recruiter/interviewer so far. 1 Answer Sieve of Eratosthenes works well, as does simply using the modulus-operand approach on every number (inclusive) between m and n.

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

Web Applications Developer at Arizona State University was asked...

May 9, 2014
 How would you paginate results in a Oracle result set? 1 Answer Unlike MySQL, there's no LIMIT clause. You can use oracle's ROWNUM to specifiy a greater than or less than condition, but you'll have to query the result set twice to build the upper and lower bounds.

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 Answer I was so nervous!... it was a firs question.. don't be nervous!

Web Or Applications Developer at Emory University was asked...

Feb 10, 2012
 Describe the difference between html and xhtml 1 Answer As this is a web job xhtml is more structured everything should be lower case and end in />

Web Applications Developer at Level Up Development was asked...

Oct 27, 2013
 Salary was probably the most difficult question, because you don't really know what to expect from a company of this size. 1 Answer I recommend responding with your market rate.
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