Code RoomLargest blob size
MediumPrep Room Coding #863

Largest blob size

CodingAlgorithms & data structuresMid–Senior~20 min

Given an R x C binary grid, a 'blob' is a maximal group of 1-cells connected 8-directionally (including diagonals). Return the size (number of 1-cells) of the largest blob. If there are no 1-cells, return 0.

Implement
largest_blob(grid: list[list[int]]) → int
Examples
in[[[1,1,0,0],[1,0,0,1],[0,0,1,1]]]out3
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 20 min
InputExpectedGot
[[[1,1,0,0],[1,0,0,1],[0,0,1,1]]]3not run yetsample