backup/C-Plus-Plus
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/C-Plus-Plus.git synced 2026-03-21 04:18:34 +08:00
Code Issues Projects Releases Wiki Activity
Files
38cc28167e02a33c44e216c4674524e0afae239f
C-Plus-Plus/dc/d14/wildcard__matching_8cpp.html
realstealthninja b41207008f Documentation for f1eddf4d65
2025-07-09 10:53:16 +00:00

399 lines
28 KiB
HTML
Raw Blame History

<!-- HTML header for doxygen 1.12.0-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.14.0"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>TheAlgorithms/C++: backtracking/wildcard_matching.cpp File Reference</title>
<link rel="icon" href="../../favicon.svg" type="image/x-icon" />
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../jquery.js"></script>
<script type="text/javascript" src="../../dynsections.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/@xpack-3rd-party/doxygen-awesome-css@2.2.0-1/doxygen-awesome-darkmode-toggle.js"></script>
<script type="text/javascript">
DoxygenAwesomeDarkModeToggle.init()
</script>
<script type="text/javascript" src="../../clipboard.js"></script>
<link href="../../navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../navtreedata.js"></script>
<script type="text/javascript" src="../../navtree.js"></script>
<script type="text/javascript" src="../../cookie.js"></script>
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../search/searchdata.js"></script>
<script type="text/javascript" src="../../search/search.js"></script>
<script type="text/javascript">
window.MathJax = {
options: {
ignoreHtmlClass: 'tex2jax_ignore',
processHtmlClass: 'tex2jax_process'
},
loader: {
load: ['[tex]/ams']
},
tex: {
macros: {},
packages: ['base','configmacros','ams']
}
};
</script>
<script type="text/javascript" id="MathJax-script" async="async" src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
<link href="../../doxygen-awesome.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr id="projectrow">
<td id="projectlogo"><img alt="Logo" src="../../project_logo.png"/></td>
<td id="projectalign">
<div id="projectname">TheAlgorithms/C++<span id="projectnumber">&#160;1.0.0</span>
</div>
<div id="projectbrief">All the algorithms implemented in C++</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.14.0 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "../../search/",'.html');
</script>
<script type="text/javascript">
$(function() { codefold.init(); });
</script>
<script type="text/javascript" src="../../menudata.js"></script>
<script type="text/javascript" src="../../menu.js"></script>
<script type="text/javascript">
$(function() {
initMenu('../../',true,false,'search.php','Search',true);
$(function() { init_search(); });
});
</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(function(){initNavTree('dc/d14/wildcard__matching_8cpp.html','../../',''); });
</script>
<div id="container">
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<div id="MSearchResults">
<div class="SRPage">
<div id="SRIndex">
<div id="SRResults"></div>
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
</div>
</div>
</div>
</div>
<div class="header">
<div class="headertitle"><div class="title">wildcard_matching.cpp File Reference</div></div>
</div><!--header-->
<div class="contents">
<p>Implementation of the <a href="https://www.geeksforgeeks.org/wildcard-pattern-matching/" target="_blank">Wildcard Matching</a> problem.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;cassert&gt;</code><br />
<code>#include &lt;cstdint&gt;</code><br />
<code>#include &lt;iostream&gt;</code><br />
<code>#include &lt;vector&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for wildcard_matching.cpp:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" loading="lazy" frameborder="0" src="../../df/d92/wildcard__matching_8cpp__incl.svg" width="336" height="126"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
</div>
</div>
<p><a href="../../dc/d14/wildcard__matching_8cpp_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-namespaces" class="groupheader"><a id="namespaces" name="namespaces"></a>
Namespaces</h2></td></tr>
<tr class="memitem:backtracking" id="r_backtracking"><td class="memItemLeft" align="right" valign="top">namespace &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/dc0/namespacebacktracking.html">backtracking</a></td></tr>
<tr class="memdesc:db/dc0/namespacebacktracking"><td class="mdescLeft">&#160;</td><td class="mdescRight">for vector container <br /></td></tr>
<tr class="memitem:wildcard_5Fmatching" id="r_wildcard_5Fmatching"><td class="memItemLeft" align="right" valign="top">namespace &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d03/namespacewildcard__matching.html">wildcard_matching</a></td></tr>
<tr class="memdesc:db/d03/namespacewildcard__matching"><td class="mdescLeft">&#160;</td><td class="mdescRight">Functions for the <a href="https://www.geeksforgeeks.org/wildcard-pattern-matching/" target="_blank">Wildcard Matching</a> problem. <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a1f8c260cf0d7e22c666b85f1f71ee4a7" id="r_a1f8c260cf0d7e22c666b85f1f71ee4a7"><td class="memItemLeft" align="right" valign="top">std::vector&lt; std::vector&lt; int64_t &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">backtracking::wildcard_matching::dpTable</a> (1000, std::vector&lt; int64_t &gt;(1000, -1))</td></tr>
<tr class="memdesc:a1f8c260cf0d7e22c666b85f1f71ee4a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">The main function implements if pattern can be matched with given string. <br /></td></tr>
<tr class="memitem:a182d0f016b34e40f86be8d6df05dc9ac" id="r_a182d0f016b34e40f86be8d6df05dc9ac"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a182d0f016b34e40f86be8d6df05dc9ac">backtracking::wildcard_matching::wildcard_matching</a> (std::string s, std::string p, uint32_t pos1, uint32_t pos2)</td></tr>
<tr class="memitem:aa8dca7b867074164d5f45b0f3851269d" id="r_aa8dca7b867074164d5f45b0f3851269d"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa8dca7b867074164d5f45b0f3851269d">test</a> ()</td></tr>
<tr class="memdesc:aa8dca7b867074164d5f45b0f3851269d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Self-test implementations. <br /></td></tr>
<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4" id="r_ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Main function. <br /></td></tr>
</table>
<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Implementation of the <a href="https://www.geeksforgeeks.org/wildcard-pattern-matching/" target="_blank">Wildcard Matching</a> problem. </p>
<p>Given a matching string and a pattern, implement wildcard pattern matching with support for <span class="tt">?</span> and <span class="tt">*</span>. <span class="tt">?</span> matches any single character. <span class="tt">*</span> matches any sequence of characters (including the empty sequence). The matching should cover the entire matching string (not partial). The task is to determine if the pattern matches with the matching string </p><dl class="section author"><dt>Author</dt><dd><a href="https://github.com/Swastyy" target="_blank">Swastika Gupta</a> </dd></dl>
<p class="definition">Definition in file <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html">wildcard_matching.cpp</a>.</p>
</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
<a id="a1f8c260cf0d7e22c666b85f1f71ee4a7" name="a1f8c260cf0d7e22c666b85f1f71ee4a7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">&#9670;&#160;</a></span>dpTable()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">std::vector&lt; std::vector&lt; int64_t &gt; &gt; backtracking::wildcard_matching::dpTable </td>
<td>(</td>
<td class="paramtype">1000</td> <td class="paramname"><span class="paramname"><em></em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector&lt; int64_t &gt;</td> <td class="paramname"><span class="paramname"><em></em></span>1000, -1&#160;)</td>
</tr>
</table>
</div><div class="memdoc">
<p>The main function implements if pattern can be matched with given string. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">s</td><td>is the given matching string </td></tr>
<tr><td class="paramname">p</td><td>is the given pattern </td></tr>
<tr><td class="paramname">pos1</td><td>is the starting index </td></tr>
<tr><td class="paramname">pos2</td><td>is the last index </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 if pattern matches with matching string otherwise 0 </dd></dl>
</div>
</div>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int main </td>
<td>(</td>
<td class="paramtype">void</td> <td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Main function. </p>
<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html#l00153">153</a> of file <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html">wildcard_matching.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 153</span> {</div>
<div class="line"><span class="lineno"> 154</span> <a class="code hl_function" href="#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
<div class="line"><span class="lineno"> 155</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 156</span>}</div>
<div class="ttc" id="awildcard__matching_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="../../dc/d14/wildcard__matching_8cpp_source.html#l00102">wildcard_matching.cpp:102</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a id="aa8dca7b867074164d5f45b0f3851269d" name="aa8dca7b867074164d5f45b0f3851269d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa8dca7b867074164d5f45b0f3851269d">&#9670;&#160;</a></span>test()</h2>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void test </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel static">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Self-test implementations. </p>
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html#l00102">102</a> of file <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html">wildcard_matching.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 102</span> {</div>
<div class="line"><span class="lineno"> 103</span> <span class="comment">// 1st test</span></div>
<div class="line"><span class="lineno"> 104</span> std::cout &lt;&lt; <span class="stringliteral">&quot;1st test &quot;</span>;</div>
<div class="line"><span class="lineno"> 105</span> std::string matching1 = <span class="stringliteral">&quot;baaabab&quot;</span>;</div>
<div class="line"><span class="lineno"> 106</span> std::string pattern1 = <span class="stringliteral">&quot;*****ba*****ab&quot;</span>;</div>
<div class="line"><span class="lineno"> 107</span> assert(backtracking::wildcard_matching::wildcard_matching(matching1,</div>
<div class="line"><span class="lineno"> 108</span> pattern1, 0, 0) ==</div>
<div class="line"><span class="lineno"> 109</span> 1); <span class="comment">// here the pattern matches with given string</span></div>
<div class="line"><span class="lineno"> 110</span> std::cout &lt;&lt; <span class="stringliteral">&quot;passed&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 111</span> </div>
<div class="line"><span class="lineno"> 112</span> <span class="comment">// 2nd test</span></div>
<div class="line"><span class="lineno"> 113</span> std::cout &lt;&lt; <span class="stringliteral">&quot;2nd test &quot;</span>;</div>
<div class="line"><span class="lineno"> 114</span> std::string matching2 = <span class="stringliteral">&quot;baaabab&quot;</span>;</div>
<div class="line"><span class="lineno"> 115</span> std::string pattern2 = <span class="stringliteral">&quot;ba*****ab&quot;</span>;</div>
<div class="line"><span class="lineno"> 116</span> assert(backtracking::wildcard_matching::wildcard_matching(matching2,</div>
<div class="line"><span class="lineno"> 117</span> pattern2, 0, 0) ==</div>
<div class="line"><span class="lineno"> 118</span> 1); <span class="comment">// here the pattern matches with given string</span></div>
<div class="line"><span class="lineno"> 119</span> std::cout &lt;&lt; <span class="stringliteral">&quot;passed&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 120</span> </div>
<div class="line"><span class="lineno"> 121</span> <span class="comment">// 3rd test</span></div>
<div class="line"><span class="lineno"> 122</span> std::cout &lt;&lt; <span class="stringliteral">&quot;3rd test &quot;</span>;</div>
<div class="line"><span class="lineno"> 123</span> std::string matching3 = <span class="stringliteral">&quot;baaabab&quot;</span>;</div>
<div class="line"><span class="lineno"> 124</span> std::string pattern3 = <span class="stringliteral">&quot;ba*ab&quot;</span>;</div>
<div class="line"><span class="lineno"> 125</span> assert(backtracking::wildcard_matching::wildcard_matching(matching3,</div>
<div class="line"><span class="lineno"> 126</span> pattern3, 0, 0) ==</div>
<div class="line"><span class="lineno"> 127</span> 1); <span class="comment">// here the pattern matches with given string</span></div>
<div class="line"><span class="lineno"> 128</span> std::cout &lt;&lt; <span class="stringliteral">&quot;passed&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 129</span> </div>
<div class="line"><span class="lineno"> 130</span> <span class="comment">// 4th test</span></div>
<div class="line"><span class="lineno"> 131</span> std::cout &lt;&lt; <span class="stringliteral">&quot;4th test &quot;</span>;</div>
<div class="line"><span class="lineno"> 132</span> std::string matching4 = <span class="stringliteral">&quot;baaabab&quot;</span>;</div>
<div class="line"><span class="lineno"> 133</span> std::string pattern4 = <span class="stringliteral">&quot;a*ab&quot;</span>;</div>
<div class="line"><span class="lineno"> 134</span> assert(backtracking::wildcard_matching::wildcard_matching(matching4,</div>
<div class="line"><span class="lineno"> 135</span> pattern4, 0, 0) ==</div>
<div class="line"><span class="lineno"> 136</span> 1); <span class="comment">// here the pattern matches with given string</span></div>
<div class="line"><span class="lineno"> 137</span> std::cout &lt;&lt; <span class="stringliteral">&quot;passed&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 138</span> </div>
<div class="line"><span class="lineno"> 139</span> <span class="comment">// 5th test</span></div>
<div class="line"><span class="lineno"> 140</span> std::cout &lt;&lt; <span class="stringliteral">&quot;5th test &quot;</span>;</div>
<div class="line"><span class="lineno"> 141</span> std::string matching5 = <span class="stringliteral">&quot;baaabab&quot;</span>;</div>
<div class="line"><span class="lineno"> 142</span> std::string pattern5 = <span class="stringliteral">&quot;aa?ab&quot;</span>;</div>
<div class="line"><span class="lineno"> 143</span> assert(backtracking::wildcard_matching::wildcard_matching(matching5,</div>
<div class="line"><span class="lineno"> 144</span> pattern5, 0, 0) ==</div>
<div class="line"><span class="lineno"> 145</span> 1); <span class="comment">// here the pattern matches with given string</span></div>
<div class="line"><span class="lineno"> 146</span> std::cout &lt;&lt; <span class="stringliteral">&quot;passed&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 147</span>}</div>
</div><!-- fragment -->
</div>
</div>
<a id="a182d0f016b34e40f86be8d6df05dc9ac" name="a182d0f016b34e40f86be8d6df05dc9ac"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a182d0f016b34e40f86be8d6df05dc9ac">&#9670;&#160;</a></span>wildcard_matching()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool backtracking::wildcard_matching::wildcard_matching </td>
<td>(</td>
<td class="paramtype">std::string</td> <td class="paramname"><span class="paramname"><em>s</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::string</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>pos1</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>pos2</em></span>&#160;)</td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html#l00040">40</a> of file <a class="el" href="../../dc/d14/wildcard__matching_8cpp_source.html">wildcard_matching.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 41</span> {</div>
<div class="line"><span class="lineno"> 42</span> uint32_t n = s.length();</div>
<div class="line"><span class="lineno"> 43</span> uint32_t m = p.length();</div>
<div class="line"><span class="lineno"> 44</span> <span class="comment">// matching is successfull if both strings are done</span></div>
<div class="line"><span class="lineno"> 45</span> <span class="keywordflow">if</span> (pos1 == n &amp;&amp; pos2 == m) {</div>
<div class="line"><span class="lineno"> 46</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 47</span> }</div>
<div class="line"><span class="lineno"> 48</span> </div>
<div class="line"><span class="lineno"> 49</span> <span class="comment">// matching is unsuccessfull if pattern is not finished but matching string</span></div>
<div class="line"><span class="lineno"> 50</span> <span class="comment">// is</span></div>
<div class="line"><span class="lineno"> 51</span> <span class="keywordflow">if</span> (pos1 != n &amp;&amp; pos2 == m) {</div>
<div class="line"><span class="lineno"> 52</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 53</span> }</div>
<div class="line"><span class="lineno"> 54</span> </div>
<div class="line"><span class="lineno"> 55</span> <span class="comment">// all the remaining characters of patterns must be * inorder to match with</span></div>
<div class="line"><span class="lineno"> 56</span> <span class="comment">// finished string</span></div>
<div class="line"><span class="lineno"> 57</span> <span class="keywordflow">if</span> (pos1 == n &amp;&amp; pos2 != m) {</div>
<div class="line"><span class="lineno"> 58</span> <span class="keywordflow">while</span> (pos2 &lt; m &amp;&amp; p[pos2] == <span class="charliteral">&#39;*&#39;</span>) {</div>
<div class="line"><span class="lineno"> 59</span> pos2++;</div>
<div class="line"><span class="lineno"> 60</span> }</div>
<div class="line"><span class="lineno"> 61</span> </div>
<div class="line"><span class="lineno"> 62</span> <span class="keywordflow">return</span> pos2 == m;</div>
<div class="line"><span class="lineno"> 63</span> }</div>
<div class="line"><span class="lineno"> 64</span> </div>
<div class="line"><span class="lineno"> 65</span> <span class="comment">// if already calculted for these positions</span></div>
<div class="line"><span class="lineno"> 66</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2] != -1) {</div>
<div class="line"><span class="lineno"> 67</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2];</div>
<div class="line"><span class="lineno"> 68</span> }</div>
<div class="line"><span class="lineno"> 69</span> </div>
<div class="line"><span class="lineno"> 70</span> <span class="comment">// if the characters are same just go ahead in both the string</span></div>
<div class="line"><span class="lineno"> 71</span> <span class="keywordflow">if</span> (s[pos1] == p[pos2]) {</div>
<div class="line"><span class="lineno"> 72</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2] =</div>
<div class="line"><span class="lineno"> 73</span> wildcard_matching(s, p, pos1 + 1, pos2 + 1);</div>
<div class="line"><span class="lineno"> 74</span> }</div>
<div class="line"><span class="lineno"> 75</span> </div>
<div class="line"><span class="lineno"> 76</span> <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 77</span> <span class="comment">// can only single character</span></div>
<div class="line"><span class="lineno"> 78</span> <span class="keywordflow">if</span> (p[pos2] == <span class="charliteral">&#39;?&#39;</span>) {</div>
<div class="line"><span class="lineno"> 79</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2] =</div>
<div class="line"><span class="lineno"> 80</span> wildcard_matching(s, p, pos1 + 1, pos2 + 1);</div>
<div class="line"><span class="lineno"> 81</span> }</div>
<div class="line"><span class="lineno"> 82</span> <span class="comment">// have choice either to match one or more charcters</span></div>
<div class="line"><span class="lineno"> 83</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (p[pos2] == <span class="charliteral">&#39;*&#39;</span>) {</div>
<div class="line"><span class="lineno"> 84</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2] =</div>
<div class="line"><span class="lineno"> 85</span> wildcard_matching(s, p, pos1, pos2 + 1) ||</div>
<div class="line"><span class="lineno"> 86</span> wildcard_matching(s, p, pos1 + 1, pos2);</div>
<div class="line"><span class="lineno"> 87</span> }</div>
<div class="line"><span class="lineno"> 88</span> <span class="comment">// not possible to match</span></div>
<div class="line"><span class="lineno"> 89</span> <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 90</span> <span class="keywordflow">return</span> <a class="code hl_function" href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">dpTable</a>[pos1][pos2] = 0;</div>
<div class="line"><span class="lineno"> 91</span> }</div>
<div class="line"><span class="lineno"> 92</span> }</div>
<div class="line"><span class="lineno"> 93</span>}</div>
<div class="ttc" id="awildcard__matching_8cpp_html_a1f8c260cf0d7e22c666b85f1f71ee4a7"><div class="ttname"><a href="#a1f8c260cf0d7e22c666b85f1f71ee4a7">backtracking::wildcard_matching::dpTable</a></div><div class="ttdeci">std::vector&lt; std::vector&lt; int64_t &gt; &gt; dpTable(1000, std::vector&lt; int64_t &gt;(1000, -1))</div><div class="ttdoc">The main function implements if pattern can be matched with given string.</div></div>
</div><!-- fragment -->
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<div id="page-nav" class="page-nav-panel">
<div id="page-nav-resize-handle"></div>
<div id="page-nav-tree">
<div id="page-nav-contents">
</div><!-- page-nav-contents -->
</div><!-- page-nav-tree -->
</div><!-- page-nav -->
</div><!-- container -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a href="../../dir_c11585dfcef32a26e29098facab6c144.html">backtracking</a></li><li class="navelem"><a href="../../dc/d14/wildcard__matching_8cpp.html">wildcard_matching.cpp</a></li>
<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="../../doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.14.0 </li>
</ul>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink