Python Coding Practice

Solve Print Adjacency List using Python Language

Solve Print Adjacency List using Python to enhance your skills with python coding practice , master coding concepts, and prepare for interviews with practical exercises and detailed solutions.

Print Adjacency List

Difficulty : Easy

Categories :

  • Graphs

Given an undirected graph with V vertices and E edges, create and return its adjacency list representation. Use 0-based indexing for the vertices.

An adjacency list is a data structure where for each vertex, we maintain a list of all other vertices it is connected to.

Constraints:

  • 1 ≤ V, E ≤ 105
  • Graph is undirected, meaning if there's an edge from u to v, there's also an edge from v to u
  • 0 ≤ u, v < V (vertices are 0-indexed)

Examples:

Input:
V = 5, E = 7
edges = [[0,1],[0,4],[4,1],[4,3],[1,3],[1,2],[3,2]]
Output: [[1,4],[0,2,3,4],[1,3],[1,2,4],[0,1,3]]
Explanation: For each vertex i, output[i] contains all vertices j where an edge exists between i and j.
Input:
V = 4, E = 3
edges = [[0,3],[0,2],[2,1]]
Output: [[2,3],[2],[0,1],[0]]
Explanation: The list for each vertex contains all vertices it has edges to.

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