How to Solve Count Visited Nodes in a Directed Graph Problem
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Count Visited Nodes in a Directed Graph
There is a directed graph consisting of n nodes numbered from 0 to n - 1 and n directed edges. You are given a 0-indexed array edges where edges[i] indicates that there is an edge from node i to node ...
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Understanding the Count Visited Nodes in a Directed Graph Problem
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Problem Statement
There is a directed graph consisting of n nodes numbered from 0 to n - 1 and n directed edges. You are given a 0-indexed array edges where edges[i] indicates that there is an edge from node i to node edges[i]. Consider the following process on the graph: You start from a node x and keep visiting other nodes through edges until you reach a node that you have already visited before on this same process. Return an array answer where answer[i] is the number of different nodes that you will visit if you perform the process starting from node i.
Count Visited Nodes in a Directed Graph
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Examples
edges = [1,2,0,0][3,3,3,4]We perform the process starting from each node in the following way: - Starting from node 0, we visit the nodes 0 -> 1 -> 2 -> 0. The number of different nodes we visit is 3. - Starting from node 1, we visit the nodes 1 -> 2 -> 0 -> 1. The number of different nodes we visit is 3. - Starting from node 2, we visit the nodes 2 -> 0 -> 1 -> 2. The number of different nodes we visit is 3. - Starting from node 3, we visit the nodes 3 -> 0 -> 1 -> 2 -> 0. The number of different nodes we visit is 4.
edges = [1,2,3,4,0][5,5,5,5,5]Starting from any node we can visit every node in the graph in the process.
Constraints
n == edges.length2 <= n <= 1050 <= edges[i] <= n - 1edges[i] != iHow Interview Coder Helps with Leetcode Problems
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