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  1. // your code goes here
  2.  
  3. const list = new Map([ ['root', {nodeId: 'root', children: ['n1', 'n2']}], ['n2', {nodeId: 'n2', children: ['n3']}], ['n3', {nodeId: 'n3', children: ['n1', 'n4']}], ['n4', {nodeId: 'n4', children: []}] ]);
  4.  
  5. // console.log(JSON.stringify(list.get('root')));
  6.  
  7.     const getRootSet = (rootNodeId, list) => {    
  8.      let results = [];
  9.      let nodes = [rootNodeId];
  10.      let index = 0;
  11.      while(index < nodes.length) {
  12.        const node = list.get(nodes[index]);
  13. // console.log('node'+index+': '+JSON.stringify(node));
  14.        if(node) {
  15.          results.push(node.nodeId);
  16.          if (node.children.length > 0) {
  17.            node.children.forEach(childId => {
  18.               if(!nodes.includes(childId)) {
  19.                 nodes.push(childId);
  20.               }
  21.            });
  22. // console.log('nodes: '+JSON.stringify(nodes));
  23.          }
  24.        }
  25.        index++;
  26.      }
  27.  
  28.     return results;
  29. };
  30.  
  31. // console.log(getRootSet('root', list));
  32. console.log(JSON.stringify(getRootSet('root', list)));
Success #stdin #stdout 0.03s 17480KB
comments (?)
stdin 
Standard input is empty
stdout 
["root","n2","n3","n4"]
https://ideone.com/Avnq9h
language:
JavaScript (SMonkey 60.2.3)
created:
4 years ago
visibility:
public

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