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Commit 02ed22e

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chapter 4 reviews
1 parent f029666 commit 02ed22e

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+45
-277
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‎src/04-stack/01-undo-feature.js‎

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// src/04-stack/01-undo-feature.js
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const Stack = require('./stack');
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// import { Stack } from './stack'; // or './stack.js' if you are using ES modules
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const undoFeature = new Stack();
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console.log(undoFeature.isEmpty()); // true
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undoFeature.push({action: 'typing', text: 'S'});
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undoFeature.push({action: 'typing', text: 't'});
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console.log(undoFeature.peek()); // { action: 'typing', text: 't' }
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console.log(undoFeature.size); // 2
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undoFeature.push({action: 'typing', text: 'a'});
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undoFeature.push({action: 'typing', text: 'c'});
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undoFeature.push({action: 'typing', text: 'k'});
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console.log(undoFeature.size); // 5
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console.log(undoFeature.isEmpty()); // false
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// removing two elements from the stack
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undoFeature.pop();
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undoFeature.pop();
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console.log(undoFeature.size); // 3
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console.log(undoFeature.peek()); // { action: 'typing', text: 'a' }
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// toString
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console.log(undoFeature.toString());
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// to see the output of this file use the command: node src/04-stack/01-undo-feature.js

‎src/04-stack/01-using-stack-class.js‎

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‎src/04-stack/02-using-stack-object-class.js‎

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‎src/04-stack/02-using-stack-object-class.ts‎

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‎src/04-stack/decimal-to-base.js‎

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throw new Error('Base must be between 2 and 36');
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}
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if (decimalNumber === 0) { return '0'; }
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if (decimalNumber < 0) {
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throw new Error('Negative numbers are not supported');
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}
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const digits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'; // Digits for base 36
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const remainderStack = new Stack();
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let baseString = '';

‎src/04-stack/decimal-to-binary.js‎

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return '0';
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}
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while (decimalNumber > 0) { // {1}
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const remainder = Math.floor(decimalNumber % 2); // {2}
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remainderStack.push(remainder); // {3}
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decimalNumber = Math.floor(decimalNumber / 2); // {4}
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while (decimalNumber > 0) {
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const remainder = Math.floor(decimalNumber % 2);
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remainderStack.push(remainder);
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decimalNumber = Math.floor(decimalNumber / 2);
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}
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while (!remainderStack.isEmpty()) { // {5}
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while (!remainderStack.isEmpty()) {
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binaryString += remainderStack.pop().toString();
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}
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‎src/04-stack/stack-object.js‎

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‎src/04-stack/stack-object.ts‎

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