mirror of
https://github.com/Brandon-Rozek/website.git
synced 2024-12-23 13:41:15 +00:00
138 lines
4.3 KiB
HTML
138 lines
4.3 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8" />
|
||
|
|
<meta name="author" content="Fredrik Danielsson, http://lostkeys.se">
|
||
|
|
<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>October 18th</h1>
|
||
|
|
<h2>ArrayLists in classes</h2>
|
||
|
|
<pre><code class="language-java">public class Numbers {
|
||
|
|
private ArrayList<Integer> used;
|
||
|
|
private ArrayList<Integer> unused;
|
||
|
|
numbers () {
|
||
|
|
// Debug: System.out.println("1. Constructor Entry Point");
|
||
|
|
used = new ArrayList<Integer>();
|
||
|
|
unused = new ArrayList<Integer>();
|
||
|
|
// Debug: System.out.println("2, Constructor Size of ArrayLists" + used.size() + " " + unused.size())
|
||
|
|
}
|
||
|
|
// Adds the numbers 1-5 into the used ArrayList
|
||
|
|
public void fillUsedArrayList() {
|
||
|
|
for (int i = 0; i < 5; i++) {
|
||
|
|
used.add(i + 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Move an item from the unused ArrayList to the used ArrayList
|
||
|
|
public int moveIt(int index) {
|
||
|
|
int temp = used.get(index);
|
||
|
|
unused.add(temp);
|
||
|
|
// Debug: System.out.println("Adding to used array:" + (i + 1));
|
||
|
|
used.remove(index);
|
||
|
|
return temp;
|
||
|
|
}
|
||
|
|
// The method below is created for debugging purposes
|
||
|
|
public void printBothArrayLists() {
|
||
|
|
// Print the used arraylist
|
||
|
|
System.out.println("Used ArrayList");
|
||
|
|
for (int i = 0; i < used.size(); i++) {
|
||
|
|
System.out.println(used.get(i));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Print the unused arraylist
|
||
|
|
System.out.println("Unused ArrayList");
|
||
|
|
for (int i = 0; i < unused.size(); i ++) {
|
||
|
|
System.out.println(unused.get(i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}</code></pre>
|
||
|
|
<p>Recall that you can compile the code above but you cannot run it. To run code, you must have a main method.</p>
|
||
|
|
<h2>NumberTester</h2>
|
||
|
|
<pre><code class="language-java">public class NumberTester {
|
||
|
|
public static void main(String[] args) {
|
||
|
|
Numbers list;
|
||
|
|
list = new Numbers();
|
||
|
|
list.fillUsedArrayList();
|
||
|
|
list.printBothArrayLists();
|
||
|
|
}
|
||
|
|
}</code></pre>
|
||
|
|
<h2>Difference between Array and ArrayList</h2>
|
||
|
|
<p>An Array is a <strong>static</strong> structure of contiguous memory of a single type.</p>
|
||
|
|
<p>An ArrayList is a <strong>dynamic</strong> structure of contiguous memory of a single type </p>
|
||
|
|
<p>To get the size of an array you use <code>.length</code></p>
|
||
|
|
<p>To get the size of an ArrayList you use <code>.size()</code></p>
|
||
|
|
</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>
|