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index.js

/**
 * Topological sorting function
 *
 * @param {Array} edges
 * @returns {Array}
 */

module.exports = exports = function(edges){
  return toposort(uniqueNodes(edges), edges)
}

exports.array = toposort

function toposort(nodes, edges) {
  var cursor = nodes.length
    , sorted = new Array(cursor)
    , visited = {}
    , i = cursor

while (i--) {
    if (!visited[i]) visit(nodes[i], i, [])
  }

return sorted

function visit(node, i, predecessors) {
    if(predecessors.indexOf(node) >= 0) {
      throw new Error('Cyclic dependency: '+JSON.stringify(node))
    }

if (!~nodes.indexOf(node)) {
      throw new Error('Found unknown node. Make sure to provided all involved nodes. Unknown node: '+JSON.stringify(node))
    }

if (visited[i]) return;
    visited[i] = true

// outgoing edges
    var outgoing = edges.filter(function(edge){
      return edge[0] === node
    })
    if (i = outgoing.length) {
      var preds = predecessors.concat(node)
      do {
        var child = outgoing[--i][1]
        visit(child, nodes.indexOf(child), preds)
      } while (i)
    }

sorted[--cursor] = node
  }
}

function uniqueNodes(arr){
  var res = []
  for (var i = 0, len = arr.length; i < len; i++) {
    var edge = arr[i]
    if (res.indexOf(edge[0]) < 0) res.push(edge[0])
    if (res.indexOf(edge[1]) < 0) res.push(edge[1])
  }
  return res
}

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Name	Type	Size	Permission	Last Modified	Actions
.	dir	-	0755	2021-11-10 09:12:31	Buat Folder Buat File Info
..	dir	-	0755	2021-11-10 09:12:50
.npmignore	text/plain	13 B	0644	2016-05-13 02:53:43	edit rename chmod hapus
.travis.yml	text/plain	51 B	0644	2016-05-13 02:53:43	edit rename chmod hapus
License	text/plain	1.1 KB	0644	2016-05-13 02:53:43	edit rename chmod hapus
Makefile	text/plain	166 B	0644	2016-05-13 02:53:43	edit rename chmod hapus
README.md	text/plain	2.41 KB	0644	2017-02-14 08:28:52	edit rename chmod hapus
component.json	text/plain	471 B	0644	2017-01-28 02:08:58	edit rename chmod hapus
graph.svg	image/svg+xml	5.35 KB	0644	2017-02-14 09:12:22	edit rename chmod hapus
index.js	text/plain	1.34 KB	0644	2016-05-13 02:56:16	edit rename chmod hapus
package.json	text/plain	2.43 KB	0644	2017-03-03 05:01:32	edit rename chmod hapus
test.js	text/plain	3.02 KB	0644	2016-05-13 02:59:47	edit rename chmod hapus