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<div id="projectname">Templates -- Meow
 <span id="projectnumber">1.1.4</span>
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<div id="projectbrief">A C++ template which is unable and also not allowed to compile to obj-file first.</div>
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<div class="title">DisjointSet.h</div> </div>
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<a href="DisjointSet_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef dsa_DisjointSet_H__</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor"></span><span class="preprocessor">#define dsa_DisjointSet_H__</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <cstdlib></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <cstdio></span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="keyword">namespace </span>meow {</div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="classmeow_1_1DisjointSet.html">DisjointSet</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">size_t</span> n_;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  std::vector<size_t> father_;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  std::vector<size_t> depth_;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordtype">size_t</span> root_(<span class="keywordtype">size_t</span> now) {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">if</span> (father_[now] == now) <span class="keywordflow">return</span> now;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> (father_[now] = root_(father_[now]));</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  }</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">size_t</span> merge_(<span class="keywordtype">size_t</span> a, <span class="keywordtype">size_t</span> b) {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  a = root_(a);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  b = root_(b);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">if</span> (a == b) <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span> (depth_[a] > depth_[b]) {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  father_[b] = a;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  father_[a] = b;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (depth_[a] == depth_[b]) depth_[b]++;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> b;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#a8c55a16b0320c28854ed59795bc2bf3d"> 54</a></span>  <a class="code" href="classmeow_1_1DisjointSet.html#a8c55a16b0320c28854ed59795bc2bf3d">DisjointSet</a>(): n_(0) {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#af86aee43ff23d616c1c065c0825d000c"> 62</a></span>  <a class="code" href="classmeow_1_1DisjointSet.html#af86aee43ff23d616c1c065c0825d000c">DisjointSet</a>(<span class="keywordtype">size_t</span> n) {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classmeow_1_1DisjointSet.html#a232841a6d2daeb2b974cd7cb7fe6bfb7">reset</a>(n);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#ade3ec2924018ac0fd6693e3ae966516f"> 73</a></span>  <a class="code" href="classmeow_1_1DisjointSet.html#ade3ec2924018ac0fd6693e3ae966516f">DisjointSet</a>(<a class="code" href="classmeow_1_1DisjointSet.html">DisjointSet</a> <span class="keyword">const</span>& dsj):</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  n_(dsj.n_), father_(dsj.father_), depth_(dsj.depth_) {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#a0b66ca7c5e19f640b521630f06b313c1"> 85</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classmeow_1_1DisjointSet.html#a0b66ca7c5e19f640b521630f06b313c1">root</a>(<span class="keywordtype">size_t</span> a)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> ((<a class="code" href="classmeow_1_1DisjointSet.html">DisjointSet</a>*)<span class="keyword">this</span>)->root_(a);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#a1738123f2c0456bec373d4a8422d62b5"> 95</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classmeow_1_1DisjointSet.html#a1738123f2c0456bec373d4a8422d62b5">size</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> n_;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#a232841a6d2daeb2b974cd7cb7fe6bfb7"> 107</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1DisjointSet.html#a232841a6d2daeb2b974cd7cb7fe6bfb7">reset</a>(<span class="keywordtype">size_t</span> n) {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  n_ = n;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  father_.resize(n);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  depth_ .resize(n);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < n; i++) {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  father_[i] = i;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  depth_ [i] = 1;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"><a class="line" href="classmeow_1_1DisjointSet.html#a410399290f718332f5c3df1854182198"> 128</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classmeow_1_1DisjointSet.html#a410399290f718332f5c3df1854182198">merge</a>(<span class="keywordtype">size_t</span> a, <span class="keywordtype">size_t</span> b) {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> merge_(a, b);</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> };</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> }</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#endif // dsa_DisjointSet_H__</span></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_a232841a6d2daeb2b974cd7cb7fe6bfb7"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#a232841a6d2daeb2b974cd7cb7fe6bfb7">meow::DisjointSet::reset</a></div><div class="ttdeci">void reset(size_t n)</div><div class="ttdoc">重設 </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00107">DisjointSet.h:107</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html"><div class="ttname"><a href="classmeow_1_1DisjointSet.html">meow::DisjointSet</a></div><div class="ttdoc">用來維護一堆互斥集的資訊 </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00025">DisjointSet.h:25</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_a8c55a16b0320c28854ed59795bc2bf3d"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#a8c55a16b0320c28854ed59795bc2bf3d">meow::DisjointSet::DisjointSet</a></div><div class="ttdeci">DisjointSet()</div><div class="ttdoc">constructor </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00054">DisjointSet.h:54</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_ade3ec2924018ac0fd6693e3ae966516f"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#ade3ec2924018ac0fd6693e3ae966516f">meow::DisjointSet::DisjointSet</a></div><div class="ttdeci">DisjointSet(DisjointSet const &dsj)</div><div class="ttdoc">constructor </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00073">DisjointSet.h:73</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_a410399290f718332f5c3df1854182198"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#a410399290f718332f5c3df1854182198">meow::DisjointSet::merge</a></div><div class="ttdeci">size_t merge(size_t a, size_t b)</div><div class="ttdoc">合併 </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00128">DisjointSet.h:128</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_a0b66ca7c5e19f640b521630f06b313c1"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#a0b66ca7c5e19f640b521630f06b313c1">meow::DisjointSet::root</a></div><div class="ttdeci">size_t root(size_t a) const </div><div class="ttdoc">回傳指定的number所在的 集合的編號 </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00085">DisjointSet.h:85</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_af86aee43ff23d616c1c065c0825d000c"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#af86aee43ff23d616c1c065c0825d000c">meow::DisjointSet::DisjointSet</a></div><div class="ttdeci">DisjointSet(size_t n)</div><div class="ttdoc">constructor </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00062">DisjointSet.h:62</a></div></div>
<div class="ttc" id="classmeow_1_1DisjointSet_html_a1738123f2c0456bec373d4a8422d62b5"><div class="ttname"><a href="classmeow_1_1DisjointSet.html#a1738123f2c0456bec373d4a8422d62b5">meow::DisjointSet::size</a></div><div class="ttdeci">size_t size() const </div><div class="ttdoc">回傳總element數 </div><div class="ttdef"><b>Definition:</b> <a href="DisjointSet_8h_source.html#l00095">DisjointSet.h:95</a></div></div>
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