All Paths From Source Lead To Destination [Premium] | DFS | Ultimate Graph Series | @Innoskrit

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Master Graph Data Structure for Coding Interview.
This series covers almost everything in Graph you need to prepare for Coding Interviews.
Problem Statement:
In this video, we have solved an exciting, one of the famous problems on Graph i.e. Find If Path Exists.
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Coding Interview Preparation
Graph Series
Graph Data Structure in Java
Graph Data Structure in Python
Graph Data Structure in C++
Master Graph Data Structure
Cracking The Coding Interview

[@shashankdesai819]

Nice explanation. The reason we maintain here coloring and not using visited set or array is to get rid of TLE. Seems like more or less memoization.

[@Innoskrit]

Taking Set or Array to mark node visited implies that we cannot visit them in the future. But here we had to check every single way to reach the destination node. So there was a possibility for visiting a node again. Hence, we kept the coloring concept here.