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Suppose that you earn 100% annual interest (APY) on $1 initial deposit. How long before you'll be as rich as Bill Gates ($63 billion)? Given a number, e.g., 314159, as an array [3,1,4,1,5,9], increment it: change it to [3,1,4,1,6,0].
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Software Engineer

Interviewed at Google

4.4★
Feb 12, 2013

Suppose that you earn 100% annual interest (APY) on $1 initial deposit. How long before you'll be as rich as Bill Gates ($63 billion)? Given a number, e.g., 314159, as an array [3,1,4,1,5,9], increment it: change it to [3,1,4,1,6,0].

you have a sequence where each number is a multiple of 2 or 5 (so: 2^i * 5^j). he gave the beginning of the sequence as 1,2,3,4,5,8,10,16... and asked me to find an algorithm to calculate the next number in the sequence.
avatar

Software Engineer

Interviewed at Google

4.4★
Mar 10, 2010

you have a sequence where each number is a multiple of 2 or 5 (so: 2^i * 5^j). he gave the beginning of the sequence as 1,2,3,4,5,8,10,16... and asked me to find an algorithm to calculate the next number in the sequence.

1. Phone interview - Sort the characters in string by frequency and then by their alphabetical order. Example - bbaaccc -> cccaabb 2. The question that screwed me - given array is [0,1,1,0,1,1,1] ; output should be [0,1,1,0,1,2,3] ie., for every non-zero element in array, find its distance to the nearest zero in O(n) time. i would definitely encourage the candidates who read this post to share their solution for this question. 3. In order traversal of Binary search tree related (the solution is to start from right sub tree).
avatar

Software Engineer

Interviewed at Bloomberg

4★
Dec 29, 2016

1. Phone interview - Sort the characters in string by frequency and then by their alphabetical order. Example - bbaaccc -> cccaabb 2. The question that screwed me - given array is [0,1,1,0,1,1,1] ; output should be [0,1,1,0,1,2,3] ie., for every non-zero element in array, find its distance to the nearest zero in O(n) time. i would definitely encourage the candidates who read this post to share their solution for this question. 3. In order traversal of Binary search tree related (the solution is to start from right sub tree).

If your are given an Integer Singly linked list. Print it backwards. Constraints: 1. Do not manipulate the list. (example: do not make it a doubly linked list, do not add or delete elements, do not change any memory location of any element) 2. O(n) < time < O(n^2) 3. O(1) < space < O(n)
avatar

Software Engineer

Interviewed at Meta

3.6★
Jan 11, 2017

If your are given an Integer Singly linked list. Print it backwards. Constraints: 1. Do not manipulate the list. (example: do not make it a doubly linked list, do not add or delete elements, do not change any memory location of any element) 2. O(n) < time < O(n^2) 3. O(1) < space < O(n)

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