Can somebody please help me understand and answer this question in Python? Includes documentation that thoroughly explains thought process. Not able to understand the answers posted previously.

Challenge Attachments Adjacency Matrix Programming challenge description: Write a program that builds an adjacency matrix representation of a simple undirected graph. Input: An undirected graph represented as an adjacency list. Each line of input contains one element of the list, which is a space-separated set of numbers. The first number is a vertex index, and all other are the vertices that the current vertex is adjacent to. Vertex indices are continuous integer numbers from 0 to (12 1), where n is a count of vertices in the graph. So for example: 01231 103 2 3 4 3@12 4 0 2 The first row means that vertex with index O is adjacent to (i.e., shares an edge with) the vertices 1, 2, 3, and 4. The second row means that vertex 1 is adjacent to vertices 0 and 3, and so on. See the attachments tab for an image representation of this graph. Output: An adjacency matrix of the given graph that is a square X matrix containing only zeros and ones. The element in the cross of the i row and the j column is equal to 1 if and only if there is an edge between vertices i and j in the graph. Each row of the output contains space-separated elements of the corresponding row of the adjacency matrix. For example: 01111 1 @@10 10 0 11 1110 10100 Test 1 Test Input 0 1 2 3 4 103 20 34 30 12 Expected Output 0 1 1 1 1 100 10 100 il 1 1100 1 0 1 0 0 Test 2 Test Input 012 102 201 Expected Output 011 101 110 Test 3 Test Input 0 1 2 3 10 23 2 0 1 3 4 3 0 1 2 5 2 5 6 5 3 4 6 7 6 4 57 7 4 5 6 Expected Output 01110000 1 0110000 1 1 0 1 1 0 0 0 1 1 1 0 0 1 0 0 0 0 0 1 1 0 1 1 0 0 0 0 1 1 0 1 00001110 Test 4 Test Input 0145 10 26 2 1 3 7 3 2 4 8 0 39 0 78 1 8 2 5 9 94 67