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Changed var to const/let #322

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Merged
itsvinayak merged 2 commits into from
Oct 1, 2020
Merged

Changed var to const/let #322

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2230828
varToLet
Aayush-Harwani Oct 1, 2020
9ed7307
Update DijkstraSmallestPath.js
Aayush2011 Oct 1, 2020
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32 changes: 16 additions & 16 deletions Graphs/DijkstraSmallestPath.js
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Original file line number Diff line number Diff line change
@@ -1,23 +1,23 @@
// starting at s
function solve (graph, s) {
var solutions = {}
const solutions = {}
solutions[s] = []
solutions[s].dist = 0

while (true) {
var p = null
var neighbor = null
var dist = Infinity
let p = null
let neighbor = null
let dist = Infinity

for (var n in solutions) {
for (const n in solutions) {
if (!solutions[n]) { continue }
var ndist = solutions[n].dist
var adj = graph[n]
const ndist = solutions[n].dist
const adj = graph[n]

for (var a in adj) {
for (const a in adj) {
if (solutions[a]) { continue }

var d = adj[a] + ndist
const d = adj[a] + ndist
if (d < dist) {
p = solutions[n]
neighbor = a
Expand All @@ -40,9 +40,9 @@ function solve (graph, s) {
return solutions
}
// create graph
var graph = {}
const graph = {}

var layout = {
const layout = {
R: ['2'],
2: ['3', '4'],
3: ['4', '6', '13'],
Expand All @@ -61,7 +61,7 @@ var layout = {
}

// convert uni-directional to bi-directional graph
// var graph = {
// let graph = {
// a: {e:1, b:1, g:3},
// b: {a:1, c:1},
// c: {b:1, d:1},
Expand All @@ -72,7 +72,7 @@ var layout = {
// h: {f:1}
// };

for (var id in layout) {
for (const id in layout) {
if (!graph[id]) { graph[id] = {} }
layout[id].forEach(function (aid) {
graph[id][aid] = 1
Expand All @@ -82,13 +82,13 @@ for (var id in layout) {
}

// choose start node
var start = '10'
const start = '10'
// get all solutions
var solutions = solve(graph, start)
const solutions = solve(graph, start)

console.log("From '" + start + "' to")
// display solutions
for (var s in solutions) {
for (const s in solutions) {
if (!solutions[s]) continue
console.log(' -> ' + s + ': [' + solutions[s].join(', ') + '] (dist:' + solutions[s].dist + ')')
}
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