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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">BinaryIndexTree.h</div> </div>
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<a href="BinaryIndexTree_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_BinaryIndexTree_H__</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor"></span><span class="preprocessor">#define dsa_BinaryIndexTree_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> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">namespace </span>meow {</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keyword">template</span><<span class="keyword">class</span> Value></div>
<div class="line"><a name="l00021"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html"> 21</a></span> <span class="keyword">class </span><a class="code" href="classmeow_1_1BinaryIndexTree.html" title="極度簡化的 SegmentTree 已無區間更新的操作">BinaryIndexTree</a> {</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  std::vector<Value> array_;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#afe34f33091c5c8267f1d219ff40824c4"> 28</a></span>  <a class="code" href="classmeow_1_1BinaryIndexTree.html#afe34f33091c5c8267f1d219ff40824c4" title="constructor">BinaryIndexTree</a>() {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  }</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#a355a4eacbfbe2112720d529efdbad021"> 37</a></span>  <a class="code" href="classmeow_1_1BinaryIndexTree.html#afe34f33091c5c8267f1d219ff40824c4" title="constructor">BinaryIndexTree</a>(<span class="keywordtype">size_t</span> size, Value <span class="keyword">const</span>& value):</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  array_(size, value) {</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="l00047"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#a8323caade12e478be1e47b7612a60b8f"> 47</a></span>  <a class="code" href="classmeow_1_1BinaryIndexTree.html#afe34f33091c5c8267f1d219ff40824c4" title="constructor">BinaryIndexTree</a>(<a class="code" href="classmeow_1_1BinaryIndexTree.html" title="極度簡化的 SegmentTree 已無區間更新的操作">BinaryIndexTree</a> <span class="keyword">const</span>& tree2):</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  array_(tree2.array_) {</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="l00060"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#a5634a9420ee864860bbf8605b9e17c32"> 60</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1BinaryIndexTree.html#a5634a9420ee864860bbf8605b9e17c32" title="將資料洗掉, 重設">reset</a>(<span class="keywordtype">size_t</span> size, Value <span class="keyword">const</span>& init) {</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  array_.clear();</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  array_.resize(size, init);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#a3a4f1799b20d5dab24d8cc584db5d32d"> 74</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1BinaryIndexTree.html#a3a4f1799b20d5dab24d8cc584db5d32d" title="將array中第 index (從零算起)個element多加上指定的值">update</a>(<span class="keywordtype">size_t</span> index, Value <span class="keyword">const</span>& value) {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  index++;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">for</span> ( ; index <= array_.size(); index += (index & -index)) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  array_[index - 1] = array_[index - 1] + value;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</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="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="code" href="classmeow_1_1BinaryIndexTree.html#a99f7d954c32c0292a9dda4b74abe5833"> 90</a></span>  Value <a class="code" href="classmeow_1_1BinaryIndexTree.html#a99f7d954c32c0292a9dda4b74abe5833" title="詢問 0~index 的區間值">query</a>(ssize_t index)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  index = std::min(index + 1, (ssize_t)array_.size());</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  Value ret(0);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">for</span> ( ; 0 < index; index -= (index & -index)) {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  ret = ret + array_[index - 1];</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>  <span class="keywordflow">return</span> ret;</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="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#endif // dsa_BinaryIndexTree_H__</span></div>
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