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You have 17 red and 17 blue balls, and you remove 2 at a time. If the two are the same colour, add in one extra blue ball. If they are different colours, add in an extra red ball. What colour is the final ball removed?
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Software Engineer

Interviewed at Geonomics

4.1★
Jul 23, 2014

You have 17 red and 17 blue balls, and you remove 2 at a time. If the two are the same colour, add in one extra blue ball. If they are different colours, add in an extra red ball. What colour is the final ball removed?

Given an array of numbers, nums, return an array of numbers products, where products[i] is the product of all nums[j], j != i. Input : [1, 2, 3, 4, 5] Output: [(2*3*4*5), (1*3*4*5), (1*2*4*5), (1*2*3*5), (1*2*3*4)] = [120, 60, 40, 30, 24] You must do this in O(N) without using division.
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Software Development Engineer

Interviewed at Amazon

3.5★
Sep 25, 2012

Given an array of numbers, nums, return an array of numbers products, where products[i] is the product of all nums[j], j != i. Input : [1, 2, 3, 4, 5] Output: [(2*3*4*5), (1*3*4*5), (1*2*4*5), (1*2*3*5), (1*2*3*4)] = [120, 60, 40, 30, 24] You must do this in O(N) without using division.

Find the first index of the substring. Condition: Do not use java library function or regular expressions. And measure the performance of your implementation with the standard java library function. Examples: String 1: “abcdefg” String 2: “bcd” Should return 1 String 1: “abcdefg” String 2: “x” Should return -1
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Software Engineer

Interviewed at Salesforce

4.1★
May 2, 2012

Find the first index of the substring. Condition: Do not use java library function or regular expressions. And measure the performance of your implementation with the standard java library function. Examples: String 1: “abcdefg” String 2: “bcd” Should return 1 String 1: “abcdefg” String 2: “x” Should return -1

In a party of N people, only one person is known to everyone. Such a person may be present in the party, if yes, (s)he doesn’t know anyone in the party. We can only ask questions like “does A know B? “. Find the stranger (celebrity) in minimum number of questions.
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Software Development Engineer

Interviewed at Amazon

3.5★
Aug 3, 2016

In a party of N people, only one person is known to everyone. Such a person may be present in the party, if yes, (s)he doesn’t know anyone in the party. We can only ask questions like “does A know B? “. Find the stranger (celebrity) in minimum number of questions.

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