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It's the first OA coding sample of Google. The coding question is: Given a zero-indexed array A of N integers, return any of the indexes P of the element, which left sums of its left elements and right elements are equal. Sum of zero element is assumed to be equal to 0. This can happen if P = 0 or if P = N-1.For example, A = {-1, 3, -4, 5, 1, -6, 2, 1}, indexes 1, 3, and 7 are valid outputs.
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Software Engineer

Interviewed at Google

4.4★
Jun 23, 2016

It's the first OA coding sample of Google. The coding question is: Given a zero-indexed array A of N integers, return any of the indexes P of the element, which left sums of its left elements and right elements are equal. Sum of zero element is assumed to be equal to 0. This can happen if P = 0 or if P = N-1.For example, A = {-1, 3, -4, 5, 1, -6, 2, 1}, indexes 1, 3, and 7 are valid outputs.

Can you cover an 8x8 chess board with dominos if two corner squares are removed (not two from the same side, 2 diagonal from each other). A domino covers 2 squares and no dominos can hang over the side of the board.
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Financial Software Developer

Interviewed at Bloomberg

4★
Jun 29, 2012

Can you cover an 8x8 chess board with dominos if two corner squares are removed (not two from the same side, 2 diagonal from each other). A domino covers 2 squares and no dominos can hang over the side of the board.

Given 10 cups to locate the bottle poisoned wine from a batch of normal ones, you can make any mixture of them and test your mixtures by mouses. However the density of poison in the mixture, the testing mouse will certainly die. And you must give all the mixtures of the 10 cups before the test. There is only one poisoned bottle. How many bottles of wine you can test at most?
avatar

Financial Software Developer

Interviewed at Bloomberg

4★
Dec 8, 2012

Given 10 cups to locate the bottle poisoned wine from a batch of normal ones, you can make any mixture of them and test your mixtures by mouses. However the density of poison in the mixture, the testing mouse will certainly die. And you must give all the mixtures of the 10 cups before the test. There is only one poisoned bottle. How many bottles of wine you can test at most?

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