Engineering Interview Questions

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“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…”

“Implement a function rotateArray(vector<int> arr, int r) which rotates the array by r places. Eg 1 2 3 4 5 on being rotated by 2 gives 4 5 1 2 3.”

“You have 8 pennies, 7 weight the same, one weighs less. you also have a judges scale. Find the one that weighs less in less than 3 steps.”

“Given an array of numbers, replace each number with the product of all the numbers in the array except the number itself *without* using division.”

“You have a 100 coins laying flat on a table, each with a head side and a tail side. 10 of them are heads up, 90 are tails up. You can't feel, see or in any other way find out which side is up…”

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“Phone interview 1 : a) Simulate a Queue with stacks ?
b)Find repeated occurrence of character in a string ?

Phone interview 2 : a) Given a 2D matrix of numbers find the position of number…”

“Write an algorithm to determine if 2 linked lists intersect”

“You are trying to rob houses on a street. Each house has some +ve amount of cash. Your goal is to rob houses such that you maximize the total robbed amount. The constraint is once you rob a house you…”

“How would you determine if someone has won a game of tic-tac-toe on a board of any size?”

“1. Build the CERNER tree
2. Reverse string
3. Binary search
4. How do you find and fix a bug”

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