Oracle SWE Interview Question 2023 November | Graphs and DFS | on-campus

Question 1 Problem Statement Given an m x n 2D binary grid which represents a map of '1's (land) and '0's (water), return 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 surrounded by water. Constraints m == grid.length n == grid[i].length 1 <= m, n <= 300 grid[i][j] is '0' or '1' Examples Example 1: Input: grid = ...