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<div id="projectname">Templates -- Meow
 <span id="projectnumber">1.1.2</span>
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<div id="projectbrief">不能,也不應該先編譯成obj-file的templates</div>
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<div class="title">MergeableHeap.h</div> </div>
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<a href="MergeableHeap_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_MergeableHeap_H__</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor"></span><span class="preprocessor">#define dsa_MergeableHeap_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 <cstdlib></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keyword">namespace </span>meow {</div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">template</span><<span class="keyword">class</span> Element></div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html"> 30</a></span> <span class="keyword">class </span><a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a> { <span class="comment">// maximum-heap</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">struct </span>Node {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  Element value_;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  Node* lChild_;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  Node* rChild_;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">size_t</span> weight_;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  Node(Element <span class="keyword">const</span>& value):</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  value_(value), lChild_(NULL), rChild_(NULL), weight_(1){</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  }</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  };</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  Node* root_;</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="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>(Node* node) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (node != NULL) {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>(node->lChild_);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>(node->rChild_);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">delete</span> node;</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>  }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  Node* dup(Node* node) {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (node == NULL) <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  Node* ret = <span class="keyword">new</span> Node(node->value_);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  ret->lChild_ = dup(node->lChild_);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  ret->rChild_ = dup(node->rChild_);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  ret->weight_ = 1;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ret->weight_ += (ret->lChild_ == NULL ? 0 : ret->lChild_->weight_);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  ret->weight_ += (ret->rChild_ == NULL ? 0 : ret->rChild_->weight_);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  Node* merge(Node* left, Node* right) {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (left == NULL) <span class="keywordflow">return</span> right;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (right == NULL) <span class="keywordflow">return</span> left;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (left->value_ < right->value_) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  std::swap(left, right);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  left->rChild_ = merge(left->rChild_, right);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">size_t</span> lw = (left->lChild_ == NULL ? 0 : left->lChild_->weight_);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">size_t</span> rw = (left->rChild_ == NULL ? 0 : left->rChild_->weight_);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (lw < rw) {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  std::swap(left->lChild_, left->rChild_);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  left->weight_ = 1 + lw + rw;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> left;</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> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a7ef8e2deae0058c91eda490005b978f7"> 78</a></span>  <a class="code" href="classmeow_1_1MergeableHeap.html#a7ef8e2deae0058c91eda490005b978f7" title="constructor">MergeableHeap</a>(): root_(NULL){</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a1d0ef435fb0214b13fbbc1a8b0ce7cdf"> 82</a></span>  <a class="code" href="classmeow_1_1MergeableHeap.html#a1d0ef435fb0214b13fbbc1a8b0ce7cdf" title="constructor, 並且複製資料">MergeableHeap</a>(<a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a> <span class="keyword">const</span>& heap2): root_(dup(heap2.root_)) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a24a0a465dff230206e85f7b3c172553f"> 86</a></span>  <a class="code" href="classmeow_1_1MergeableHeap.html#a24a0a465dff230206e85f7b3c172553f" title="destructor">~MergeableHeap</a>(){</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>(root_);</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="l00091"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a3f9a65eeb600d0b9fba60855b560ab33"> 91</a></span>  <a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a>& <a class="code" href="classmeow_1_1MergeableHeap.html#a3f9a65eeb600d0b9fba60855b560ab33" title="複製資料">copyFrom</a>(<a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a> <span class="keyword">const</span>& heap2) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">delete</span> root_;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  root_ = dup(heap2.root_);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#acec8dde15d23e729aba90d98417db845"> 100</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#acec8dde15d23e729aba90d98417db845" title="將自己的資料丟給指定的heap, 從此自己一身空">moveTo</a>(<a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a>* heap2){</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  heap2->clear();</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  heap2->root_ = root_;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  root_ = NULL;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a7daf99f9cc15f0cfa2625da4623b9042"> 109</a></span>  Element <span class="keyword">const</span>& <a class="code" href="classmeow_1_1MergeableHeap.html#a7daf99f9cc15f0cfa2625da4623b9042" title="回傳最大的那個 Element">top</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> root_->value_;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a112454a9c92b71531429442e95953576"> 116</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a112454a9c92b71531429442e95953576" title="回傳資料個數">size</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> (root_ == NULL ? 0 : root_->weight_);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a531fff6c8a72f09168701a0612b20af7"> 123</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a531fff6c8a72f09168701a0612b20af7" title="回傳是否為空">empty</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> (<a class="code" href="classmeow_1_1MergeableHeap.html#a112454a9c92b71531429442e95953576" title="回傳資料個數">size</a>() == 0);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a9491f6a76be757ae888a4093c034eedb"> 130</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a9491f6a76be757ae888a4093c034eedb" title="加入element">push</a>(Element <span class="keyword">const</span>& value) {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  root_ = merge(root_, <span class="keyword">new</span> Node(value));</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="l00137"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a769478f3424598aa9a408d61b5a83928"> 137</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a769478f3424598aa9a408d61b5a83928" title="將最大的element移除">pop</a>() {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  Node* l = root_->lChild_;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  Node* r = root_->rChild_;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">delete</span> root_;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  root_ = merge(l, r);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00147"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0"> 147</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>() {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="classmeow_1_1MergeableHeap.html#aaa072185a884716b2dd5c0ba608be1b0">clear</a>(root_);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  root_ = NULL;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a3638f12db8da212244cb6ab7e37332db"> 155</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a3638f12db8da212244cb6ab7e37332db">merge</a>(<a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a>* heap2) {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  root_ = merge(root_, heap2->root_);</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  heap2->root_ = NULL;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00161"></a><span class="lineno"><a class="code" href="classmeow_1_1MergeableHeap.html#a304bacba11be0772b10505b6053a57e1"> 161</a></span>  <a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a>& <a class="code" href="classmeow_1_1MergeableHeap.html#a304bacba11be0772b10505b6053a57e1" title="same as copyFrom(heap2) ">operator=</a>(<a class="code" href="classmeow_1_1MergeableHeap.html" title="一個用 左偏樹 實作的 Maximum-Heap , 除了原本heap有的功能外, 還支援 merge 功能">MergeableHeap</a> <span class="keyword">const</span>& heap2) {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">return</span> <a class="code" href="classmeow_1_1MergeableHeap.html#a3f9a65eeb600d0b9fba60855b560ab33" title="複製資料">copyFrom</a>(heap2);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> };</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#endif // dsa_MergeableHeap_H__</span></div>
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