## Algorithm Interview Questions

- 0of 0 votes

AnswersGiven an array of integers. We need to answer two types of queries point update and range sum in minimum time.

- neer.1304 August 31, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-3 Algorithm - 0of 0 votes

AnswersPut the given random pointers in linkedlist to point to next greater node such that if you transverse the list using random pointers, list become sorted. duplicates are allowed.

- neer.1304 August 31, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-3 Algorithm - 1of 1 vote

AnswersFind third highest value in a binary tree

- neer.1304 August 31, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-3 Algorithm - 0of 0 votes

AnswersThere are n Thread , n/2 thread are producer and n/2 are consumer, number produced by producer-1 thread must be consumed by consumer-1 thread. Thread must also run in order, producer 1, then consumer 1, again producer 2 and then consumer 2…so on…..

- neer.1304 August 31, 2017 in India| Report Duplicate | Flag | PURGE

One97 SDE-2 Algorithm - 0of 0 votes

AnswerImplement function which add n days to given date without using inbuilt library.

- neer.1304 August 31, 2017 in India| Report Duplicate | Flag | PURGE

One97 SDE-2 Algorithm - 0of 0 votes

AnswersYou are given a set of N horizontal lines which are connected by equal number of vertical lines to form squares of size 1x1. Now some segments are removed. You need to count the number of squares of all sizes (1x1, 2x2, ..., NxN) with all sides present.

- imunique August 30, 2017 in India

Image : https://he-s3.s3.amazonaws.com/media/uploads/1ce3516.png

In the above example you see four horizontal and vertical lines and few missing segments. Now you need to count the number of squares of all sizes with all sides.

Input :

First line is a positive integer N, number of horizontal and vertical lines.

Second line is positive integer M, number of segments removed.

Then there are m lines, each containing V,i,j or H,i,j where i and j are positive integers. H,i,j indicates a horizontal missing segment in the ith horizontal line between the jth and (j+1)th point on the line. V,i,j represents a gap in ith vertical line between the jth and (j+1)th point on the line.

Output :

Is the total number of squares in the figure with all sides along the remaining lines in the figure.

Sample Input :

4

4

H,2,1

H,3,1

V,2,2

V,2,3

Output :

5

Explanation : Here in this figure we have 4 squares of size 1x1 and 1 square of size 3x3, hence total is 5.| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm Data Structures Dynamic Programming Online Test Problem Solving - 1of 1 vote

AnswerIII. Square root of a number?

- aonecoding August 30, 2017 in United States

IV. Expression operators? Add signs (+, -, *, /) to a string to form target

V. Top trending posts in last 5m, 1H, 1Day?| Report Duplicate | Flag | PURGE

Linkedin Software Engineer Algorithm - 0of 0 votes

AnswersI. Closest K nodes to a target in BST? (Do it in O(n)?)

- aonecoding August 30, 2017 in United States

II. Nested List sum?| Report Duplicate | Flag | PURGE

Linkedin Software Engineer Algorithm - 2of 2 votes

AnswersGenerate a random binary tree, with equal probability.

- pb August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Google Software Engineer Algorithm - 0of 0 votes

AnswersGiven data of millions of people, (name, age, M/F etc.) Develop an API that will have age range as input and yield the count of people under this range as output.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 1of 1 vote

AnswerA T20 match is going on. You’re in Team B. First innings is over, they have scored “teamARuns” runs. Your team has scored “teamBRuns” runs at the end of “balls” balls. A ball can have multiple possibilities like [0, 1, 2, 3, 4, 5, 6, Wicket, No ball, Wide ball]. What is the probability that your team (Team B) will win?

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersGiven a dictionary of words and a string pattern. Output the count of words that match the string pattern in the dictionary.

- neer.1304 August 30, 2017 in United States

Eg. Dictionary: [cat, rat, mat, apple, boy, bat]

String pattern: ?at

Output: 4 (because cat, rat, mat, bat matches the string pattern)| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersGiven any two nodes in a binary tree, find the path from 1st node to another, and tell if the path is a straight line, or there are turns on the line, find number of turns.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersFind the maximum difference between any combination of child and parent node in a given binary tree. Here child node can be any level below parent node, but should be in the same sub tree starting from parent node.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersGiven a chessboard, find minimum number of moves for a knight to reach from source to destination.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswerGiven a fully connected graph with n nodes and corresponding values. One node can interact with other node at a time, to replace/ignore/add its value to other node’s value. Assuming this operation takes 1 unit of time, how much time would it take for all the nodes to have value equal to sum of all the nodes.

- neer.1304 August 30, 2017 in United States

Examples : Given a graph with values {1,2,3,4}, find total time it takes, such that all nodes have value as 10.| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 1of 1 vote

AnswersGiven a Singly Linked list, Update the second half of the list such that n-th element becomes sum(1st + nth) element, (n-1)st element becomes sum(2nd + n-1st) element and so on. Eg: 2->3->4->5->6 => 2->3->(4+4)->(5+3)->(6+2)

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersThere are some professors, some courses, and some students.

- neer.1304 August 30, 2017 in United States

Each professor can teach only a single course.

Each course has a fixed duration(Eg. 10 weeks).

For each professor, you are given time availability schedule(assume week wise).

Each student has a list of courses he wants to learn.

There can be only 1:1 classes, i.e., 1 professor can teach only a single student.

A student can attend only one course at a time.

A professor has to finish teaching a course in a one go.

Your aim is to prepare a schedule so that all courses are taught in the least time.| Report Duplicate | Flag | PURGE

Adobe Computer Scientist Algorithm - 0of 0 votes

AnswersGiven a stream of numbers which contains n numbers, each number is positioned at max k positions away from its actual position. Sort the array in the most optimized way.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Adobe Computer Scientist Algorithm - 1of 1 vote

AnswersImplement a queue using only one stack.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Microsoft SDE-2 Algorithm - 0of 0 votes

AnswersIt’s a two player game. Both the players are equally intelligent to win the game. Give n no. of stones. A player can choose either 1 stone or k stones or l stone (1<k<l). Suppose player 'A' starts game then challenge was to identify the player who will win the game. Player who picks the last 1 stone or last k stone or last l stones win the game.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Microsoft SDE-2 Algorithm - 0of 0 votes

AnswerDesign bus booking system:- Each row has x seat. If customer wants K seats if you have K consecutive seats available, reserve them. Otherwise give seats from any row.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Microsoft SDE-2 Algorithm - 0of 0 votes

AnswersThere is a bridge and N no. people takes (a1,a2,—an) time to cross it and there are K torch and at any time x no of people can pass the bridge and it takes maximum of x people time to cross it. Minimum time required for N persons to cross the bridge.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Microsoft SDE-2 Algorithm - 0of 0 votes

AnswerThere is a graph where each node represents a city and it contains specific no. of people. A tournament is going on and each match is playing in one city. All city’s people gather to watch match. Traffic department wants to manage how many people travel through city x if match is playing in city y for each x. City x and y can be any city.

- neer.1304 August 30, 2017 in United States| Report Duplicate | Flag | PURGE

Microsoft SDE-2 Algorithm - 0of 0 votes

AnswersGiven an Infinite stream of strings as AAAAABBBCCDDDEEE… How will you arrange characters so that string become unique without duplicates .

- neer.1304 August 30, 2017 in United States

Return true if it is possible to arrange else return -1.

Ex . AAABBCCDEF – O/p ABABCDCEF : Possible . AAAAAAAAAAAAAAAAAAAAAAB : Not possible| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersGiven an array of integers, replace every number with the next higher number to its right. If a number can’t be replaced, we leave it as-it is.

- neer.1304 August 30, 2017 in United States

For example, the list: 5, 2, 1, 4, 6, 7 needs to be changed to 6, 4, 4, 6, 7, 7.| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersGiven two unsorted arrays A, B. They can contain duplicates. For each element in A count elements less than or equal to it in array B

- neer.1304 August 30, 2017 in United States

Examples:

Input : A = [1, 2, 3, 4, 7, 9]

B = [0, 1, 2, 1, 1, 4]

Output : [4, 5, 5, 6, 6, 6]| Report Duplicate | Flag | PURGE

Amazon SDE-2 Algorithm - 0of 0 votes

AnswersYour input is a double array, and you can use *, +, -, and () parenthesis anywhere to create and output the maximum possible value.

- talal.nabulsi5 August 27, 2017 in United States

Ex:

input is {3,4,5,1} --> output: 72

input is {1,1,1,5} --> output: 15

Follow up, if there are numbers <0| Report Duplicate | Flag | PURGE

Google SDE-3 Algorithm - 1of 1 vote

AnswersGiven a continuous stream of numbers, write a logic to find k maximum numbers at any given point of time where k is fixed?

- explorer August 25, 2017 in United States| Report Duplicate | Flag | PURGE

Amazon Software Engineer / Developer Algorithm - 0of 0 votes

AnswerGiven some set of points in each quadrant of a 2D graph and two edges at a fixed angle, find the minimum angle at which the edges would cover maximum points between them?

- explorer August 25, 2017 in United States

I was confused on how to start and interviewer hinted me to consider each point at some angle from base (say 0) and continue finding all points which lies within the fixed angle.| Report Duplicate | Flag | PURGE

Amazon Software Engineer / Developer Algorithm

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