How to give same id to dictionary if they belong to same network

Question

my_dict=[{'s':1,'t':2},
    {'s':2,'t':3},
    {'s':3,'t':1},
    {'s':4,'t':5},
    {'s':5,'t':6},
    {'s':6,'t':4}]

convert the above list to

output=[{'s':1,'t':2,'id':1},
    {'s':2,'t':3,'id':1},
    {'s':3,'t':1,'id':1},
    {'s':4,'t':5,'id':2},
    {'s':5,'t':6,'id':2},
    {'s':6,'t':4,'id':2}]

info – we are giving the same id to the first 3 dictionaries in the list because they belong to the same network. (if you plot graph). same with the next 3 dictionaries

Asked By: Arun

||

Source

Answer 1

You can use the depth-first search algorithm to calculate each node belonging to any component and this is by iterating the search algorithm on the unvisited nodes.
it’s be some like the code in this url:

https://www.geeksforgeeks.org/connected-components-in-an-undirected-graph/

Answered By: Abd Albary Taraqji

Answer 2

this code it’s work:

let V;
let adjListArray=[];
let id = 1;
let ids = [];

function Graph(v)
{   
    V = v
    for (let i = 0; i < V; i++) {
        adjListArray.push([]);
    }
}
 
// Adds an edge to an undirected graph
function addEdge(src,dest)
{
    adjListArray[src].push(dest);
    adjListArray[dest].push(src);
}
 
function DFSUtil(v,visited)
{
    visited[v] = true;
    ids[v] = id;
    for (let x = 0; x < adjListArray[v].length; x++)
    {
        if (!visited[adjListArray[v][x]]){
        
            DFSUtil(adjListArray[v][x], visited);
        }

    }
}
 
function connectedComponents()
{
    let visited = new Array(V);
    for(let i = 1; i < V; i++)
    {
        visited[i] = false;
    }
    for (let v = 1; v < V; ++v)
    {
        if (!visited[v])
        {
            DFSUtil(v, visited);
            id++;
            document.write("<br>");
        }
    }
}
 

my_dict=[{'s':1,'t':2},
    {'s':2,'t':3},
    {'s':3,'t':1},
    {'s':4,'t':5},
    {'s':5,'t':6},
    {'s':6,'t':4}];
Graph(my_dict.length + 1);
for(var i = 0 ; i < my_dict.length ; i++){
    addEdge(my_dict[i].s,my_dict[i].t);
}

connectedComponents();
 
for(var i = 0 ; i < my_dict.length ; i++){
   my_dict[i].id = ids[my_dict[i].s];
}
console.log(my_dict);

Answered By: Abd Albary Taraqji

How to give same id to dictionary if they belong to same network

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