When launching index.js it runs scripts configured in there

Author: paolocarrasco

hanoi-towers.js renamed to algorithms/hanoi-towers.js

@@ -1,4 +1,4 @@
-class Hanoi {
+export default class Hanoi {
 
   constructor(discs) {
     this.towerA = discs;
@@ -35,11 +35,3 @@ class Hanoi {
   }
 }
 
-const theTower = new Hanoi([12, 9, 8, 7, 4, 3, 2, 1]);
-
-theTower.tracker = (...towers) => {
-  towers.forEach(tower => console.log(tower));
-  console.log('----------------------------');
-};
-
-theTower.assemble();

algorithms/index.js

@@ -0,0 +1,10 @@
+import Hanoi from './hanoi-towers';
+
+const theTower = new Hanoi([12, 9, 8, 7, 4, 3, 2, 1]);
+
+theTower.tracker = (...towers) => {
+  towers.forEach(tower => console.log(tower));
+  console.log('----------------------------');
+};
+
+theTower.assemble();

index.js

@@ -0,0 +1,6 @@
+require('import-export');
+
+console.log('Launching scripts...');
+
+require('./sorting/index');
+require('./algorithms/index');

package.json

@@ -4,6 +4,7 @@
   "description": "A set of scripts with implementations of various data structures and algorithms in JavaScript.",
   "main": "index.js",
   "scripts": {
+    "start": "node index.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {

sorting/bubble-sort.js

@@ -3,38 +3,36 @@
 * It has a running time of O(n²) in the worst case.
 * It is used mostly when learning algorithms.
 */
-const theArray = [72, 14, 34, 5, 24, 14, 53, 61, 38, 110, 39];
+export default class BubbleSort {
+  checkIfSwap(array, i, j) {
+    let x = array[i];
+    let y = array[j];
 
-const checkIfSwap = (array, i, j) => {
-  x = array[i];
-  y = array[j];
-
-  if (x > y) {
-    temp = x;
-    x = y;
-    array[i] = x;
-    array[j] = temp;
-    console.log(`Swapped! ${x} -> ${temp}`);
+    if (x > y) {
+      let temp = x;
+      x = y;
+      array[i] = x;
+      array[j] = temp;
+      console.log(`Swapped! ${x} -> ${temp}`);
+    }
   }
-}
-const bubbleSort = arrayToSort => {
-  const length = arrayToSort.length;
-  let temp, x, y;
 
-  for (var i = 0; i < length - 1; i++) {
-    console.log(`previous order: ${arrayToSort}`);
+  sort(arrayToSort) {
+    const length = arrayToSort.length;
+    let temp, x, y;
+
+    for (var i = 0; i < length - 1; i++) {
+      console.log(`previous order: ${arrayToSort}`);
 
-    for (var j = i + 1; j < length; j++) {
-      console.log(`comparing ${arrayToSort[i]} against ${arrayToSort[j]} at position ${j}`);
-      checkIfSwap(arrayToSort, i, j);
+      for (var j = i + 1; j < length; j++) {
+        console.log(`comparing ${arrayToSort[i]} against ${arrayToSort[j]} at position ${j}`);
+        this.checkIfSwap(arrayToSort, i, j);
+      }
+
+      console.log(`new order: ${arrayToSort}`);
     }
 
-    console.log(`new order: ${arrayToSort}`);
+    return arrayToSort;
   }
+}
 
-  return arrayToSort;
-};
-
-console.log(`original array: ${theArray}`);
-const sortedArray = bubbleSort(theArray);
-console.log(`sorted array: ${sortedArray}`);

sorting/index.js

@@ -0,0 +1,6 @@
+import BubbleSort from './bubble-sort';
+const theArray = [72, 14, 34, 5, 24, 14, 53, 61, 38, 110, 39];
+
+console.log(`original array: ${theArray}`);
+const sortedArray = new BubbleSort().sort(theArray);
+console.log(`sorted array: ${sortedArray}`);