## Algorithm Interview Questions

- 0of 0 votes

AnswersGiven two strings Y and Z , return True if y beats z or z beats y .

- saurabh January 10, 2019 in India

Beating Criteria : for i in [1,N] y[i]>=z[i] , if this condition is true for any of permutations of y for any of the permutations of z .| Report Duplicate | Flag | PURGE

Directi Software Engineer Algorithm - 0of 0 votes

AnswerHow to divide a circular array into k group of contiguous element such that difference between maximum sum and minimum sum is minimum. Each group have contiguous element of array. For e.g If the array is as follow. [6 13 10 2] and k=2 then o/p should be 18(6+10+2)-13=5. As array is circular 6,10,2 are contiguous element of array.

- him4211 January 05, 2019 in India

For e.g If the array is as follow. [6 13 2 10] and k=2 then o/p should be 16(6+10)-15(13+2)=1. As array is circular 6,10 are contiguous element of array.

For e.g If the array is as follow. [100 92 133 201 34 34 34 94 108] and k=4 then group as follow 208(108,100), 225(92,133), (201), 196(34,34,34,94) so 225-196=29| Report Duplicate | Flag | PURGE

Samsung Software Developer Algorithm - 0of 0 votes

AnswersGiven a target number and a single number, write a program to find the shortest path to calculate the target number by applying "+-*/" operations to the single number. No parentheses. For example, if we have target number=26 and single number=3 return 3 * 3 * 3 - 3 / 3.

- morfysster January 03, 2019 in United States| Report Duplicate | Flag | PURGE

Algorithm - 4of 4 votes

AnswersGiven a Start Node and an End Node in a graph report if they are “necessarily connected”. This means that all paths from the start node lead to the end node. Report true all paths from start node lead to end node and false if at least one path does not lead to the end node. This is a directed graph which can have cycles

- nikki December 31, 2018 in United States

Does anyone know how to solve this? I had it in my interview at Google in CA and I still cant solve it| Report Duplicate | Flag | PURGE

Google SDE1 Algorithm - 0of 0 votes

Answercode Bubble sort, and modify it to return if the array is already sorted.

- reshma.dhotre November 30, 2018 in India

2.If single swap is needed perform and break without going through o(n2) looping| Report Duplicate | Flag | PURGE

Bloomberg LP Senior Software Development Engineer Algorithm - 0of 0 votes

AnswerIn a hashtable you can only ask for the most recent value for a key. We are going to build a hashtable where you can ask for a key at any time in the past.

- SwampNight November 29, 2018 in United States

API is:

get(k, t) // get the value for k at time t

put(k, v) // insert k, v at time()

time is given as a monotonically increasing version of unix system time.| Report Duplicate | Flag | PURGE

Software Engineer / Developer Algorithm - 0of 0 votes

AnswersGiven a string S of length N. Now, you need to cut the string S into K+1 non-empty substrings by performing K cuts.

- Jatin November 25, 2018 in India for 3

There are lots of ways of performing the cuts in the string S. For every way of performing the cuts, you need to count how many substrings will be a palindrome in that way of cut. You need to sum this count over all possible ways of cutting the string S. Input Format

The first line contains two integers N and K as input. The second line contains the string S as input. Output Format

In the output, you need to print the sum modulo

10^9+7. Constraints

2≤N≤5000

1≤K≤N−1

String S contains only lowercase english alphabets

Sample Input

5 2

aabbc

Sample Output

12

Explanation

In the given test case there are

6 ways to perform the cuts. All the ways are described below.

a | a | bbc = 2 substrings are palindrome

a | ab | bc = 1 substring is palindrome

a | abb | c = 2 substrings are palindrome

aa | b | bc = 2 substrings are palindrome

aa | bb | c = 3 substrings are palindrome

aab | b | c = 2 substrings are palindrome

So, the output is

2+1+2+2+3+2=12| Report Duplicate | Flag | PURGE

Backend Developer Algorithm - 1of 1 vote

Answers`Int minSemsToFinishAllCourses(Map<string, list<string>)`

Given a map containing courses and the list of prerequisites for that course in no particular order, determine the least number of semesters to finish all the courses.

- stevejabs November 22, 2018 in United States

You have to take all prerequisites before you take a given course.

Eg.

Calculus : English, math2

Math2: math 1, Arabic, english

Math1: english

English: <>

Arabic:<>

Give an algorithm for the above and code using java| Report Duplicate | Flag | PURGE

Algorithm Java - 0of 0 votes

AnswerRoulette -Gamblers Fallacy. start with $50, bet opposite color every time same color 4 in a row. loop 100 time or until $0. Suggest create roulette wheel object with history, a gambler object with maybe gamblingplan object. (you can find more detailed suggestions elsewhere)

- whoknows November 18, 2018 in United States| Report Duplicate | Flag | PURGE

Google SDE1 Algorithm - 1of 1 vote

AnswersAdd two numbers represented as LinkedList (not LeetCode 445 which uses ListNode)

- KelvinLong8897 November 17, 2018 in United States

e.g

inputs: '5'->'6'->'3'

'8'->'4'->'2'

output: '1'->'4'->'0'->'5'

method signature:

LinkedList<Integer> sumList(LinkedList<Integer> l1, LinkedList<Integer> l2)| Report Duplicate | Flag | PURGE

Facebook Android Engineer Algorithm - 0of 0 votes

Answers1. Input string s. Check if string s is a valid string with valid brackets

- donkeysnore November 05, 2018 in United States

For example:

(({{}})) is a valid s

{[]} is a valid s

[{[}]] is not valid

2. What kind of tests would you conduct to your program to minimize bugs in your program.

3. On the previous example there is only "()", "{}", and "[]" combination of brackets. If other developers want to add a new kind of brackets such as "<>". What kind of changes would change in your previous program.| Report Duplicate | Flag | PURGE

Bloomberg LP Intern Algorithm - 0of 0 votes

AnswersGiven a matrix of 0's and 1's find the smallest number of groups made of 1's, where one group can cover up to two 1's at the same time vertically or horizontally.

- matk100.100 October 31, 2018

01111

11011

00100

The matrix above has 5 of such groups. I've seen similar questions but there the question was about groups of adjacent 1's. Here the groups are limited.

Another question how it would change, if the group wasn't limited to two but to given k - number of 1's vertically or horizontally. The time complexity should be the most efficient.

My idea here i to iterate through rows and when we find a 1, check it's bottom and right neighbour. If it has a right but no bottom, a group is made and we skip the right neighbour as it is already in a group. When the checked 1 has a bottom but no right, we make a group of them and we can skip checking the right as well i think.| Report Duplicate | Flag | PURGE

Algorithm - 2of 2 votes

AnswersGiven the root of a binary tree, print the nodes column wise and row wise.

`..............6 ............/....\ ...........9......4 ........../..\......\ .........5....1.....3 ..........\........./ ...........0.......7`

The answer would be 5 9 0 6 1 4 7 3.

- Champaklal October 26, 2018 in United States| Report Duplicate | Flag | PURGE

Facebook Software Developer Algorithm - 1of 1 vote

AnswersGiven multiple tuples in the form of (A,B) where A is the parent and B is the child in a binary tree, find if the input is valid or not. 4 error conditions were provided:

- Ankita October 14, 2018 in United States

1. If a parent has more than 2 children,

2. If duplicate tuples entered,

3. If the tree has a cycle,

4. If more than one root possible.

For violation of multiple validity conditions, print the condition coming first in the above order.

If the input is valid, print the tree in a serial representation. For eg: If input is (A,B), (B,C), (A,D), (C,E) , output: (A(B(C(E)))(D))| Report Duplicate | Flag | PURGE

Starup SDE-2 Algorithm Problem Solving - 0of 0 votes

AnswersSuppose If you are hacker, you have to push data to server and find how much data server can accept using minimal number of times. We don't the size of how much server will accept.

- narsimharao.mothkuri October 14, 2018 in India| Report Duplicate | Flag | PURGE

Accolite software Applications Developer Algorithm - 0of 2 votes

AnswerGiven an array and threshold value. The threshold represents the maximum length of subarrays that may be created. Each subarray created has a cost equal to the maximum integer within the subarray. Partition the entire array into subarrays no longer than the threshold and do it at minimum cost. The subarrays are to be chosen from contiguous elements and the given array must remain in its original order. Write a function to return an integer that denotes the minimum cost to partition the array.

- sticker01 September 23, 2018 in United States

For more clarification, here are the test cases.

1. Array: [1,2], threshold: 1.

we divide the array to {(1),(2)} Total cost is 1+2 = 3

2. Array: [1,5,2], threshold: 2.

we divide the array to {(1),(5),(2)} with total cost 1+5+2 = 8. OR

we divide to {(1,5),(2)} with total cost 5+2 = 7 OR

we divide to {(1),(5,2)} with total cost 1+5 = 6.

Of these minimum total cost is 6. So the ans is 6 with subarrays as {(1),(5,2)}| Report Duplicate | Flag | PURGE

Algorithm - 0of 0 votes

AnswersA company wants to fly in a total of 100 candidates for the interview. The company has two office location, one in NY and other in SF and max capacity at each location is 50 candidates. You are given the cost it incurs to fly in each candidate to NY and SF.

`[500, 300],[540, 600],[550, 600],[300, 50]..so on`

Write an algorithm for the minimum total cost?

- nishug001 September 22, 2018 in United States| Report Duplicate | Flag | PURGE

Bloomberg LP Software Engineer Algorithm - 10of 10 votes

AnswersGiven 3 unsorted arrays A, B and C you need to find all possible combinations such that A[i] + B[j] = B[k] + C[l].

- venkataratnamkumar7777 September 22, 2018 in United States| Report Duplicate | Flag | PURGE

Walmart Labs SDE1 Algorithm Arrays - 1of 1 vote

AnswersLets there are n stores.

- sam September 18, 2018 in United States

A customer order x items. All the stores might not have all the items from the order list. So find the store/combination of stores that can serve the order request such that the set that contain least number of stores is selected so that there are lesser number of shipments.| Report Duplicate | Flag | PURGE

Software Developer Algorithm - 0of 0 votes

AnswersPascal Triangle Hockey Stick Identity?

- Pearl September 16, 2018 in United States| Report Duplicate | Flag | PURGE

Algorithm - 0of 0 votes

AnswersGiven an array of negative and positive integers, find the biggest sum of a sub-array.

- asiftasleem September 12, 2018 in United States| Report Duplicate | Flag | PURGE

Service Now Staff Engineer Algorithm - 0of 0 votes

AnswersGiven an array of integers and a target. Find the two array elements if they are summed up, will result in the target.

- asiftasleem September 12, 2018 in United States| Report Duplicate | Flag | PURGE

Service Now Staff Engineer Algorithm - 0of 0 votes

AnswersFind 2nd duplicate in an array

- interviewquestionsseeker September 07, 2018 in United States| Report Duplicate | Flag | PURGE

Akamai Software Engineer Algorithm - 0of 0 votes

AnswersGiven 2 sets of words. Find the words in 2nd set that begin with any word in the 1st set.

- interviewquestionsseeker September 07, 2018 in United States| Report Duplicate | Flag | PURGE

Akamai Software Engineer Algorithm - 0of 0 votes

AnswerLargest Sum Contiguous Subarray

- interviewquestionsseeker September 07, 2018 in United States| Report Duplicate | Flag | PURGE

Akamai Software Engineer Algorithm - 0of 0 votes

AnswersGiven integer m and n where n is odd, for all mxn matrixes that consist of 0 and 1, find the one that has max count of 1s and meets following conditions:

- akak18183 August 31, 2018 in United States

1. All 0s are connected;

2. All 1s are adjacent to at least one 0 (Adjacent includes diagonal line adjacent, 8 directions);

3. maxtrix[m-1][n/2] = 0.

Example :

Input: m=2, n=3

Output: [[1,1,1],[1,0,1]]

Follow up:

Given another list of 'blocked' points. Matrix will set those points to -1 and you cannot change that. Solve the problem again.| Report Duplicate | Flag | PURGE

unknown Software Engineer Algorithm - 0of 0 votes

AnswersWhat is idempotence and why is it useful for API design? (~2-6

- ruta.gadgil August 31, 2018 in United States for Penny

sentences)| Report Duplicate | Flag | PURGE

CreditKarma Software Engineer Algorithm - 0of 0 votes

AnswersLooking at this function, what bugs do you see or concerns do you have

- ruta.gadgil August 31, 2018 in United States for Penny

about its functionality? You can assume the models are correctly

{{defined, the schema is correct, etc. (~1-3 sentences)

def send_email_to_user_once!(to_user_id:, type:, subject:, body:)

user = User.find(to_user_id)

return if UserEmailLog.where(user_id: user.user_id, email: type).exists?

send_email(to: user.email, subject: subject, body: body)

UserEmailLog.create!(user_id: user.user_id, email: type)

end

def send_email(to:, subject:, body:)

# Makes a blocking network request to Amazon Simple Email Sender

# to send an email. Returns nothing in all cases.

# See this link for more info if you need it.

end}}| Report Duplicate | Flag | PURGE

CreditKarma Software Engineer Algorithm - 0of 0 votes

AnswersWhat does this Javascript ES6 function do and how is it useful? If you

- ruta.gadgil August 31, 2018 in United States for Penny

had to give the function a name, what would it be? (~1-2 sentences)

{{

function operate(l, s, callback) {

a = s

for (let i = 0; i < l.length; i++) {

a = callback(a, l[i])

}

return a

}

}}| Report Duplicate | Flag | PURGE

CreditKarma Software Engineer Algorithm

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