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<p>Implementations of mathematical and technical concepts in Rust.</p>
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<p>View <a href="#modules">the modules section</a> for the various implementations based on the subject.</p>
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<h2 id="example"><a href="#example">Example</a></h2>
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<p>Here’s an example of using the <code>ladderz</code> crate to get the factors and factor pairs of a number in sorted order.
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We’ll assume you’re using Bash as your terminal.</p>
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<p>First let’s create a new Rust project and change into the project directory:</p>
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<div class="example-wrap"><pre class="language-bash"><code>cargo new my_ladderz_project
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cd my_ladderz_project
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</code></pre></div>
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<p>Then let’s add the following to <code>Cargo.toml</code> under the <code>[dependencies]</code> section:</p>
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<div class="example-wrap"><pre class="language-toml"><code>ladderz = { git = "https://github.com/rzmk/ladderz", branch = "main" }
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</code></pre></div>
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<p>Now in <code>src/main.rs</code> let’s replace the contents with the following code:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>ladderz::pre_algebra::unit1::{get_factor_pairs, get_factors};
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<span class="kw">use </span>std::env;
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<span class="kw">fn </span>main() {
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<span class="comment">// Get user input as a Vec
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</span><span class="kw">let </span>args: Vec<String> = env::args().collect();
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<span class="comment">// Check if input was provided
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</span><span class="kw">match </span>args.get(<span class="number">1</span>) {
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<span class="prelude-val">Some</span>(<span class="kw">_</span>) => {
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<span class="kw">match </span>args[<span class="number">1</span>].parse::<u32>() {
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<span class="comment">// Handle input that can be parsed as a u32
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</span><span class="prelude-val">Ok</span>(x) => {
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<span class="comment">// Convert the HashSet of factors of input x to a sorted Vec
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</span><span class="kw">let </span><span class="kw-2">mut </span>factors: Vec<u32> = get_factors(x).into_iter().collect::<Vec<u32>>();
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factors.sort();
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<span class="comment">// Convert the HashSet of factor pairs of input x to a sorted Vec
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</span><span class="kw">let </span><span class="kw-2">mut </span>factor_pairs: Vec<(u32, u32)> =
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get_factor_pairs(x).into_iter().collect::<Vec<(u32, u32)>>();
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factor_pairs.sort();
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<span class="comment">// Print the results
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</span><span class="macro">println!</span>(<span class="string">"List of factors of {:?}: {:?}"</span>, x, factors);
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<span class="macro">println!</span>(<span class="string">"List of factor pairs of {:?}: {:?}"</span>, x, factor_pairs);
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}
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<span class="comment">// Handle input that can't be parsed as a u32
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</span><span class="prelude-val">Err</span>(e) => <span class="macro">println!</span>(<span class="string">"Error parsing input: {e}"</span>),
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}
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}
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<span class="prelude-val">None </span>=> <span class="macro">println!</span>(<span class="string">"No input provided."</span>),
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}
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}
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</code></pre></div>
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<p>Now let’s build the project’s binary file so we can run it from the command line:</p>
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<div class="example-wrap"><pre class="language-bash"><code>cargo build --release
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</code></pre></div>
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<p>Our runnable binary file should be located at the local path <code>./target/release/my_ladders_project</code> (or <code>./target/release/my_ladders_project.exe</code> for Windows). Let’s run it with the number <code>12</code> as input:</p>
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<div class="example-wrap"><pre class="language-bash"><code>./target/release/my_ladderz_project 12
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</code></pre></div>
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<p>If you have a <code>.exe</code> file instead, you can run it with:</p>
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<div class="example-wrap"><pre class="language-bash"><code>./target/release/my_ladderz_project.exe 12
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</code></pre></div>
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<p>The printed output should be:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code>List of factors of <span class="number">12</span>: [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">6</span>, <span class="number">12</span>]
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List of factor pairs of <span class="number">12</span>: [(<span class="number">1</span>, <span class="number">12</span>), (<span class="number">2</span>, <span class="number">6</span>), (<span class="number">3</span>, <span class="number">4</span>)]</code></pre></div>
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<p>Great! We’ve successfully used the <code>ladderz</code> crate to get the factors and factor pairs of a number in sorted order.</p>
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</div></details><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2><ul class="item-table"><li><div class="item-name"><a class="mod" href="pre_algebra/index.html" title="mod ladderz::pre_algebra">pre_algebra</a></div><div class="desc docblock-short">Various pre-algebra implementations including factor pairs, factors, multiples, and more.</div></li></ul></section></div></main></body></html>
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