Data Researcher Interview Questions

14,869 data researcher interview questions shared by candidates

Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edges of the grid are all surrounded by water.
avatar

Quantatitive Researcher

Interviewed at Citadel

4
Oct 6, 2020

Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edges of the grid are all surrounded by water.

Algorithm: given an array of numbers: 1,5,3,2,4,2,3,1,2,3,2,4. Return another array with duplicate numbers in consecutive positions and in order of their first appearance, in the example the result should be: 1,1,5,3,3,3,2,2,2,2,4,4
avatar

Quantitative Researcher

Interviewed at Citadel

4
Oct 31, 2018

Algorithm: given an array of numbers: 1,5,3,2,4,2,3,1,2,3,2,4. Return another array with duplicate numbers in consecutive positions and in order of their first appearance, in the example the result should be: 1,1,5,3,3,3,2,2,2,2,4,4

Viewing 461 - 470 interview questions

Glassdoor has 14,869 interview questions and reports from Data researcher interviews. Prepare for your interview. Get hired. Love your job.