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Engineer Intern Interview Questions

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You are in a boat in a pool with a rock in your hand. You throw the rock into the pool. Does the water level rise, drop, or stay the same?

7 Answers

depends on how big the pool is and how accurately you can measure the water rise

you're already in the pool with the rock, so the water displaced is the same...this other guy is stupid

If the rock were neutrally buoyant the water level would remain the same. It is heavier than water which causes it to displace more than its own volume while in the boat compared to at the bottom of the lake. Therefore the water level of the lake would go down.

Suppose you had eight identical balls. One of them is slightly heavier and you are given a balance scale . What's the fewest number of times you have to use the scale to find the heavier ball?

44 Answers

How many different ways can you get water from a lake at the foot of a mountain, up to the top of the mountain?

28 Answers

Implement a power function to raise a double to an int power, including negative powers.

11 Answers

Determine if an array from 1..n has a duplicate in constant time and space.

11 Answers

To find and return the common node of two linked lists merged into a 'Y' shape.

13 Answers

Given two strings representing integer numbers ("123" , "30") return a string representing the sum of the two numbers ("153")

12 Answers

Generate a new array from an array of numbers. Start from the beginning. Put the number of some number first, and then that number. For example, from array 1, 1, 2, 3, 3, 1 You should get 2, 1, 1, 2, 2, 3, 1, 1 Write a program to solve this problem.

7 Answers

how would you find the shortest path between two nodes in a social network?

7 Answers

You are given an array with n positive integers where all values in the array are repeated except for one. Return the one that is not repeated.

7 Answers
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