mirror of
https://github.com/Brandon-Rozek/website.git
synced 2025-10-30 21:41:12 +00:00
130 lines
4.3 KiB
HTML
130 lines
4.3 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<meta name="author" content="Brandon Rozek">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
<meta name="robots" content="noindex" />
|
|
<title>Brandon Rozek</title>
|
|
<link rel="stylesheet" href="themes/bitsandpieces/styles/main.css" type="text/css" />
|
|
<link rel="stylesheet" href="themes/bitsandpieces/styles/highlightjs-github.css" type="text/css" />
|
|
</head>
|
|
<body>
|
|
|
|
<aside class="main-nav">
|
|
<nav>
|
|
<ul>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Findex.html" data-shortcut="">
|
|
Home
|
|
</a>
|
|
</li>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Fcourses.html" data-shortcut="">
|
|
Courses
|
|
</a>
|
|
</li>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Flabaide.html" data-shortcut="">
|
|
Lab Aide
|
|
</a>
|
|
</li>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Fpresentations.html" data-shortcut="">
|
|
Presentations
|
|
</a>
|
|
</li>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Fresearch.html" data-shortcut="">
|
|
Research
|
|
</a>
|
|
</li>
|
|
<li class="menuitem ">
|
|
<a href="index.html%3Ftranscript.html" data-shortcut="">
|
|
Transcript
|
|
</a>
|
|
</li>
|
|
</ul>
|
|
</nav>
|
|
</aside>
|
|
<main class="main-content">
|
|
<article class="article">
|
|
<h1>Lecture for February 27th</h1>
|
|
<h2>Review for midterm</h2>
|
|
<p>Chapter 1 -- Code Style, API</p>
|
|
<p>Chapter 2 -- Variables & Assignments, strings</p>
|
|
<p>Chapter 3 -- input & output</p>
|
|
<p>Chapter 4 -- branches (if, if/else, switch)</p>
|
|
<p>Chapter 5 -- loops (while, for), scope</p>
|
|
<p>Chapter 6 -- File Reading and Writing</p>
|
|
<h2>Separated vs Connected Branches</h2>
|
|
<p>What is the output of this code?</p>
|
|
<pre><code class="language-java">String preferredLanguage = "Spanish";
|
|
if (preferredLanguage.equals("Chinese")) {
|
|
System.out.println("Ni hao!");
|
|
}
|
|
if (preferredLanguage.equals("Spanish")) {
|
|
System.out.println("Hola!");
|
|
}
|
|
if (preferredLanguage.equals("French")) {
|
|
System.out.println("Bonjour!");
|
|
}
|
|
if (preferredLanguage.equals("German")) {
|
|
System.out.println("Gutentag!")
|
|
} else {
|
|
System.out.println("Hello!")
|
|
}</code></pre>
|
|
<p>The output is</p>
|
|
<pre><code class="language-reStructuredText">Hola!
|
|
Hello!</code></pre>
|
|
<p>This is because each of the if statements are independent from each other. Whether or not the if statement gets check is not affected by the if statements around it.</p>
|
|
<p>Since the preferred language equals Spanish it outputs <code>Hola!</code> But since the language is also <em>not German</em> it prints out <code>Hello!</code> as well.</p>
|
|
<h2>Using an Array</h2>
|
|
<p>Square brackets notation is used to access elements, array slots can be used as variables</p>
|
|
<pre><code class="language-java">int[] array = new int[7]; // Creates an integer array of size 7
|
|
array[0] = 5;</code></pre>
|
|
<h2>Swapping Elements</h2>
|
|
<p>You can swap <code>x</code> and <code>y</code> in the following way with a <em>temporary</em> variable</p>
|
|
<pre><code class="language-java">int x = 6;
|
|
int y = 1;
|
|
|
|
int temp = x;
|
|
|
|
x = y;
|
|
y = temp;</code></pre>
|
|
<h2>Two-Dimensional Arrays</h2>
|
|
<pre><code class="language-java">// Creates a 2D array of two rows and three columns
|
|
int[][] a = new int[2][3]</code></pre>
|
|
<p>You can access an element of this 2D array using the conventional square bracket notation</p>
|
|
<pre><code class="language-java">a[0][0] = 5;</code></pre>
|
|
</article>
|
|
</main>
|
|
|
|
<script src="themes/bitsandpieces/scripts/highlight.js"></script>
|
|
<script src="themes/bitsandpieces/scripts/mousetrap.min.js"></script>
|
|
<script type="text/x-mathjax-config">
|
|
MathJax.Hub.Config({
|
|
tex2jax: {
|
|
inlineMath: [ ['$','$'], ["\\(","\\)"] ],
|
|
processEscapes: true
|
|
}
|
|
});
|
|
</script>
|
|
|
|
<script type="text/javascript"
|
|
src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
|
|
</script>
|
|
<script>
|
|
hljs.initHighlightingOnLoad();
|
|
|
|
document.querySelectorAll('.menuitem a').forEach(function(el) {
|
|
if (el.getAttribute('data-shortcut').length > 0) {
|
|
Mousetrap.bind(el.getAttribute('data-shortcut'), function() {
|
|
location.assign(el.getAttribute('href'));
|
|
});
|
|
}
|
|
});
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|