Developer Interview Questions in New York City, NY | Glassdoor

Developer Interview Questions in New York City, NY


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An array of 99 elements contains integers from 1 to 100 with one missing element. Find the missing element.

22 Answers


1. calculate the sum of elements in array say SUM 2. sum of numbers 1 to 100 is(n* (n+1))/2 = 5050 when n==100 3. missing element is (5050-SUM)


How many unique handshakes if each person in a group of 10 give handshakes out to each and every other individual. (a) 100 (b) 50 (c) 45 (d) 20 (e) 10

4 Answers

How would you scale access to a system like Twitter

2 Answers

What is a JavaScript callback function?

5 Answers

Say there was a function that took 1 second to execute and you needed to run this function 10 million times, how would you cut down on the execution time?

1 Answer

Design the DB and server system where multiple users can enter calendar events, including alerts for those events.

1 Answer

Given a set of 50 unique DNA segments under 1000 characters that is guaranteed to overlap into one single segment, write a program that will align them.

1 Answer

What is a Cartesian product?

1 Answer

Out of 25 horses, pick the fastest 3 horses. In each race, only 5 horses can run at the same time. What is the minimum number of races required?

66 Answers

A frog is at the bottom of a 30 meter well. Each day he summons enough energy for one 3 meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

49 Answers
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