{
  "title": "Number of Islands",
  "category": "Graph",
  "slug": "number-of-islands",
  "officialUrl": "https://leetcode.com/problems/number-of-islands/",
  "difficulty": "Medium",
  "tags": ["graph", "dfs", "connected components"],
  "status": "solved",
  "order": 1,
  "summary": "Count how many connected land components appear in a binary grid."
}