841. Keys and Rooms | Java | Medium| LeetCode | The Stylish Coder

Question Description
There are n rooms labeled from 0 to n - 1 and all the rooms are locked except for room 0. Your goal is to visit all the rooms. However, you cannot enter a locked room without having its key.

When you visit a room, you may find a set of distinct keys in it. Each key has a number on it, denoting which room it unlocks, and you can take all of them with you to unlock the other rooms.

Given an array rooms where rooms[i] is the set of keys that you can obtain if you visited room i, return true if you can visit all the rooms, or false otherwise.

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* Timestamps: *
00:00 - Question
00:50- Understanding
04:50- DFS (Recursion)
09:55 BSF
#java
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