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POSort one List<> based on another
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  1. POSort one List<> based on another
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    copied!<p>Say I have</p> <pre><code>List&lt;int&gt; ages = new List&lt;int&gt;() { 8, 5, 3, 9, 2, 1, 7 }; List&lt;int&gt; marks = new List&lt;int&gt;() { 12, 17, 08, 15, 19, 02, 11 }; </code></pre> <p>I can sort my <code>marks</code> by <code>ages</code> like this:</p> <pre><code>while (true) { bool swapped = false; for (int i = 0; i &lt; ages.Count - 1; i++) if (ages[i] &gt; ages[i + 1]) { int tmp = ages[i]; ages[i] = ages[i + 1]; ages[i + 1] = tmp; tmp = marks[i]; marks[i] = marks[i + 1]; marks[i + 1] = tmp; swapped = true; } if (!swapped) break; } </code></pre> <p>Now I want to put this into a function that accepts any two lists. The first parameter will be the reference list, the numerical or comparable list. The second parameter will be the list containing the data.</p> <p>For example:</p> <pre><code>public static void Sort&lt;T&gt;(List&lt;T&gt; RefList, List&lt;T&gt; DataList) { // sorting logic here... } </code></pre> <p>There are a few problems:</p> <p>First of all, <code>T</code> is almost certainly not the same type in <code>RefList</code> and <code>DataList</code>. RefList might be dates, integers, or doubles; whereas DataList is free to be absolutely anything. I need to be able to receive two, arbitrary generic types.</p> <p>Secondly, I cannot seem to use the <code>&gt;</code> operator with the <code>T</code> in this line:</p> <pre><code>if (ages[i] &gt; ages[i + 1]) </code></pre> <p>Perhaps my whole approach is wrong.</p> <p>By the way, I have read responses to similar questions that suggest that the two lists should be combined into a single list of a compound data type. This isn't practical at all for my application. All I want to do is write a static function that somehow sorts one list based on the elements of another.</p>
 

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