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Solution: All Paths From Source to Target

Explore a backtracking approach to find all possible paths from the source node to the target node in a directed acyclic graph. Understand how to use depth-first search to recursively traverse graph nodes, keep track of current paths, and backtrack to explore alternative routes. This lesson helps you implement and analyze the solution's complexity for coding interview problems involving pathfinding in DAGs.

Statement

You are given a directed acyclic graph (DAG) with nn nodes, labeled from 00 to n1n - 1. The graph is represented as an adjacency list, where graph[i] is a list of all nodes to which node i has a directed edge to.

Your task is to find all possible paths from node 0 ...