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bethrobsonbethrobson
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adding chapter 4 code
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‎chapter4/bubbles.html‎

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<!doctype html>
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<html>
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<head>
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<title>Bubble Factory Test Lab</title>
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<meta charset="utf-8">
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<script>
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var scores = [60, 50, 60, 58, 54, 54,
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58, 50, 52, 54, 48, 69,
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34, 55, 51, 52, 44, 51,
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69, 64, 66, 55, 52, 61,
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46, 31, 57, 52, 44, 18,
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41, 53, 55, 61, 51, 44];
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var i = 0;
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var highScore = 0;
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while (i < scores.length) {
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console.log("Bubble solution #" + i + " score: " + scores[i]);
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if (scores[i] > highScore) {
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highScore = scores[i];
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}
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i = i + 1;
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}
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console.log("Bubbles tests: " + scores.length);
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console.log("Highest bubble score: " + highScore);
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for (var i = 0; i < scores.length; i++) {
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console.log("Bubble solution #" + i + " score: " + scores[i]);
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if (scores[i] > highScore) {
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highScore = scores[i];
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}
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i = i + 1;
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}
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console.log("Bubbles tests: " + scores.length);
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console.log("Highest bubble score: " + highScore);
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var bestSolutions = [];
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for (var i = 0; i < scores.length; i++) {
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if (scores[i] == highScore) {
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bestSolutions.push(i);
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}
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}
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console.log("Solutions with the highest score: " + bestSolutions);
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</script>
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</head>
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<body>
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</body>
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</html>
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‎chapter4/bubbles2.html‎

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<!doctype html>
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<html>
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<head>
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<title>Bubble Factory Test Lab</title>
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<meta charset="utf-8">
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<script>
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var scores = [60, 50, 60, 58, 54, 54,
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58, 50, 52, 54, 48, 69,
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34, 55, 51, 52, 44, 51,
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69, 64, 66, 55, 52, 61,
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46, 31, 57, 52, 44, 18,
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41, 53, 55, 61, 51, 44];
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var costs = [.25, .27, .25, .25, .25, .25, .33, .31,
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.25, .29, .27, .22, .31, .25, .25, .33,
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.21, .25, .25, .25, .28, .25, .24, .22,
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.20, .25, .30, .25, .24, .25, .25, .25,
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.27, .25, .26, .29];
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var highScore, bestSolutions;
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// compute the high score and display results
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highScore = printAndGetHighScore(scores);
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console.log("Bubbles tests: " + scores.length);
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console.log("Highest bubble score: " + highScore);
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// compute the best solutions and display
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bestSolutions = getBestResults(scores, highScore);
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console.log("Solutions with the highest score: " + bestSolutions);
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// compute the most cost effective of the best solutions
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mostCostEffective = getMostCostEffectiveSolution(scores, costs, highScore);
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console.log("Bubble Solution #" + mostCostEffective + " is the most cost effective");
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function printAndGetHighScore(scores) {
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var highScore = 0;
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var output;
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for (var i = 0; i < scores.length; i++) {
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output = "Bubble solution #" + i + " score: " + scores[i];
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console.log(output);
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if (scores[i] > highScore) {
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highScore = scores[i];
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}
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}
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return highScore;
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}
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function getBestResults(scores, highScore) {
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var bestSolutions = [];
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for (var i = 0; i < scores.length; i++) {
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if (scores[i] == highScore) {
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bestSolutions.push(i);
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}
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}
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return bestSolutions;
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}
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function getMostCostEffectiveSolution(scores, costs, highscore) {
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var cost = 100.0;
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var index;
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for (var i = 0; i < scores.length; i++) {
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if (scores[i] == highscore) {
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if (cost > costs[i]) {
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index = i;
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cost = costs[i];
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}
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}
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}
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return index;
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}
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//
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// Another way to write this is to use the bestSolutions array,
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// and use the index stored there to find the cost value of that solution.
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// This is a little more efficient, but not quite as easy to read!
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//
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function getMostCostEffectiveSolution2(bestSolutions, costs, highscore) {
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var cost = 100.0;
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var solutionIndex;
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var lowCostIndex;
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for (var i = 0; i < bestSolutions.length; i++) {
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solutionIndex = bestSolutions[i];
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if (cost > costs[solutionIndex]) {
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lowCostIndex = solutionIndex;
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cost = costs[i];
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}
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}
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return lowCostIndex;
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}
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</script>
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</head>
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<body> </body>
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</html>
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‎chapter4/icecream.html‎

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<!doctype html>
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<html lang="en">
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<head>
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<title>Icecream with bubblegum</title>
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<meta charset="utf-8">
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<script>
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var products = ["Choo Choo Chocolate",
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"Icy Mint", "Cake Batter",
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"Bubblegum"];
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var hasBubbleGum = [false,
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false,
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false,
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true];
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for (var i = 0; i < hasBubbleGum.length; i = i + 1) {
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if (hasBubbleGum[i] == true) {
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console.log(products[i] + " contains bubble gum");
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}
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}
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</script>
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</head>
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<body></body>
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</html>

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