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testMergeSort.cpp.html
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<!DOCTYPE HTML>
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<meta name="GENERATOR" content="GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite">
<title>testMergeSort.cpp</title>
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<pre><i><span style="color:#9A1900">/*</span></i>
<i><span style="color:#9A1900">University of Virginia</span></i>
<i><span style="color:#9A1900">CS 2150 In-Lab 8</span></i>
<i><span style="color:#9A1900">Spring 2018</span></i>
<i><span style="color:#9A1900">Test file for mergeSort</span></i>
<i><span style="color:#9A1900">*/</span></i>
<b><span style="color:#000080">#include</span></b> <span style="color:#FF0000"><iostream></span>
<b><span style="color:#0000FF">using</span></b> <b><span style="color:#0000FF">namespace</span></b> std<span style="color:#990000">;</span>
<b><span style="color:#0000FF">extern</span></b> <span style="color:#FF0000">"C"</span> <span style="color:#009900">void</span> <b><span style="color:#000000">mergeSort</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> <span style="color:#990000">*</span> arr<span style="color:#990000">,</span> <span style="color:#009900">int</span> left<span style="color:#990000">,</span> <span style="color:#009900">int</span> right<span style="color:#990000">);</span>
<b><span style="color:#0000FF">extern</span></b> <span style="color:#FF0000">"C"</span> <span style="color:#009900">void</span> <b><span style="color:#000000">merge</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> <span style="color:#990000">*</span> arr<span style="color:#990000">,</span> <span style="color:#009900">int</span> left<span style="color:#990000">,</span> <span style="color:#009900">int</span> mid<span style="color:#990000">,</span> <span style="color:#009900">int</span> right<span style="color:#990000">);</span>
<span style="color:#009900">int</span> <b><span style="color:#000000">main</span></b><span style="color:#990000">()</span> <span style="color:#FF0000">{</span>
<span style="color:#009900">int</span> size<span style="color:#990000">;</span>
<i><span style="color:#9A1900">// prompt for array size</span></i>
cout <span style="color:#990000"><<</span> <span style="color:#FF0000">"Enter the array size: "</span><span style="color:#990000">;</span>
cin <span style="color:#990000">>></span> size<span style="color:#990000">;</span>
<span style="color:#009900">int</span> <span style="color:#990000">*</span> arr <span style="color:#990000">=</span> <b><span style="color:#0000FF">new</span></b> <span style="color:#009900">int</span><span style="color:#990000">[</span>size<span style="color:#990000">];</span>
<i><span style="color:#9A1900">// read in array values</span></i>
<b><span style="color:#0000FF">for</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> i <span style="color:#990000">=</span> <span style="color:#993399">0</span><span style="color:#990000">;</span> i <span style="color:#990000"><</span> size<span style="color:#990000">;</span> i<span style="color:#990000">++)</span> <span style="color:#FF0000">{</span>
cout <span style="color:#990000"><<</span> <span style="color:#FF0000">"Enter value "</span> <span style="color:#990000"><<</span> i <span style="color:#990000"><<</span> <span style="color:#FF0000">": "</span><span style="color:#990000">;</span>
cin <span style="color:#990000">>></span> arr<span style="color:#990000">[</span>i<span style="color:#990000">];</span>
<span style="color:#FF0000">}</span>
<i><span style="color:#9A1900">// print unsorted array</span></i>
cout <span style="color:#990000"><<</span> <span style="color:#FF0000">"Unsorted array: "</span><span style="color:#990000">;</span>
<b><span style="color:#0000FF">for</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> i <span style="color:#990000">=</span> <span style="color:#993399">0</span><span style="color:#990000">;</span> i <span style="color:#990000"><</span> size<span style="color:#990000">;</span> i<span style="color:#990000">++)</span> <span style="color:#FF0000">{</span>
cout <span style="color:#990000"><<</span> arr<span style="color:#990000">[</span>i<span style="color:#990000">]</span> <span style="color:#990000"><<</span> <span style="color:#FF0000">" "</span><span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
cout <span style="color:#990000"><<</span> endl<span style="color:#990000">;</span>
<b><span style="color:#000000">mergeSort</span></b><span style="color:#990000">(</span>arr<span style="color:#990000">,</span> <span style="color:#993399">0</span><span style="color:#990000">,</span> size<span style="color:#990000">-</span><span style="color:#993399">1</span><span style="color:#990000">);</span>
<i><span style="color:#9A1900">// print sorted array</span></i>
cout <span style="color:#990000"><<</span> <span style="color:#FF0000">"Sorted array: "</span><span style="color:#990000">;</span>
<b><span style="color:#0000FF">for</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> i <span style="color:#990000">=</span> <span style="color:#993399">0</span><span style="color:#990000">;</span> i <span style="color:#990000"><</span> size<span style="color:#990000">;</span> i<span style="color:#990000">++)</span> <span style="color:#FF0000">{</span>
cout <span style="color:#990000"><<</span> arr<span style="color:#990000">[</span>i<span style="color:#990000">]</span> <span style="color:#990000"><<</span> <span style="color:#FF0000">" "</span><span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
cout <span style="color:#990000"><<</span> endl<span style="color:#990000">;</span>
<b><span style="color:#0000FF">return</span></b> <span style="color:#993399">0</span><span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
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