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<title>Algorithms_in_C++: numerical_methods/gaussian_elimination.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber"> 1.0.0</span>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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@@ -130,74 +130,74 @@ Functions</h2></td></tr>
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</table>
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</div><div class="memdoc">
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<p >Main function </p>
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||||
<div class="fragment"><div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> {</div>
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||||
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>, i, j, step;</div>
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||||
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
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||||
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Matrix size: "</span>;</div>
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||||
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>;</div>
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||||
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
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||||
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// create a 2D matrix by dynamic memory allocation</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> <span class="keywordtype">double</span> **mat = <span class="keyword">new</span> <span class="keywordtype">double</span> *[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1], **x = <span class="keyword">new</span> <span class="keywordtype">double</span> *[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>];</div>
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||||
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> <span class="keywordflow">for</span> (i = 0; i <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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||||
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> mat[i] = <span class="keyword">new</span> <span class="keywordtype">double</span>[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1];</div>
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||||
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keywordflow">if</span> (i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>)</div>
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||||
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> x[i] = <span class="keyword">new</span> <span class="keywordtype">double</span>[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1];</div>
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||||
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> }</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// get the matrix elements from user</span></div>
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||||
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a> << <span class="stringliteral">"Enter value of the matrix: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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||||
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordflow">for</span> (i = 0; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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||||
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="keywordflow">for</span> (j = 0; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++) {</div>
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||||
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> mat[i][j]; <span class="comment">// Enter (mat_size*mat_size) value of the matrix.</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> }</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> }</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// perform Gaussian elimination</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keywordflow">for</span> (step = 0; step < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; step++) {</div>
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||||
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">for</span> (i = step; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; i++) {</div>
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||||
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordtype">double</span> a = (mat[i + 1][step] / mat[step][step]);</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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||||
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordflow">for</span> (j = step; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++)</div>
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||||
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> mat[i + 1][j] = mat[i + 1][j] - (a * mat[step][j]);</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> }</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> }</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
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||||
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> << <span class="stringliteral">"Matrix using Gaussian Elimination method: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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||||
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordflow">for</span> (i = 0; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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||||
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">for</span> (j = 0; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++) {</div>
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||||
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> x[i][j] = mat[i][j];</div>
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||||
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << mat[i][j] << <span class="stringliteral">" "</span>;</div>
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||||
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> }</div>
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||||
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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||||
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> }</div>
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||||
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
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||||
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> << <span class="stringliteral">"Value of the Gaussian Elimination method: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
|
||||
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordflow">for</span> (i = <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; i >= 0; i--) {</div>
|
||||
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keywordtype">double</span> <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a> = 0;</div>
|
||||
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">for</span> (j = <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; j > i; j--) {</div>
|
||||
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> x[i][j] = x[j][j] * x[i][j];</div>
|
||||
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a> = x[i][j] + <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a>;</div>
|
||||
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> }</div>
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||||
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">if</span> (x[i][i] == 0)</div>
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||||
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> x[i][i] = 0;</div>
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||||
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">else</span></div>
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||||
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> x[i][i] = (x[i][<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>] - <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a>) / (x[i][i]);</div>
|
||||
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
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||||
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"x"</span> << i << <span class="stringliteral">"= "</span> << x[i][i] << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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||||
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> }</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">for</span> (i = 0; i <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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||||
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">delete</span>[] mat[i];</div>
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||||
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordflow">if</span> (i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>)</div>
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||||
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">delete</span>[] x[i];</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
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||||
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">delete</span>[] mat;</div>
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||||
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">delete</span>[] x;</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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||||
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> 0;</div>
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||||
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>}</div>
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||||
<div class="fragment"><div class="line"><span class="lineno"> 9</span> {</div>
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||||
<div class="line"><span class="lineno"> 10</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>, i, j, step;</div>
|
||||
<div class="line"><span class="lineno"> 11</span> </div>
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||||
<div class="line"><span class="lineno"> 12</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Matrix size: "</span>;</div>
|
||||
<div class="line"><span class="lineno"> 13</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>;</div>
|
||||
<div class="line"><span class="lineno"> 14</span> </div>
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<div class="line"><span class="lineno"> 15</span> <span class="comment">// create a 2D matrix by dynamic memory allocation</span></div>
|
||||
<div class="line"><span class="lineno"> 16</span> <span class="keywordtype">double</span> **mat = <span class="keyword">new</span> <span class="keywordtype">double</span> *[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1], **x = <span class="keyword">new</span> <span class="keywordtype">double</span> *[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>];</div>
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||||
<div class="line"><span class="lineno"> 17</span> <span class="keywordflow">for</span> (i = 0; i <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
|
||||
<div class="line"><span class="lineno"> 18</span> mat[i] = <span class="keyword">new</span> <span class="keywordtype">double</span>[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1];</div>
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||||
<div class="line"><span class="lineno"> 19</span> <span class="keywordflow">if</span> (i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>)</div>
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||||
<div class="line"><span class="lineno"> 20</span> x[i] = <span class="keyword">new</span> <span class="keywordtype">double</span>[<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> + 1];</div>
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||||
<div class="line"><span class="lineno"> 21</span> }</div>
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<div class="line"><span class="lineno"> 22</span> </div>
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<div class="line"><span class="lineno"> 23</span> <span class="comment">// get the matrix elements from user</span></div>
|
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<div class="line"><span class="lineno"> 24</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a> << <span class="stringliteral">"Enter value of the matrix: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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||||
<div class="line"><span class="lineno"> 25</span> <span class="keywordflow">for</span> (i = 0; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
|
||||
<div class="line"><span class="lineno"> 26</span> <span class="keywordflow">for</span> (j = 0; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++) {</div>
|
||||
<div class="line"><span class="lineno"> 27</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >></div>
|
||||
<div class="line"><span class="lineno"> 28</span> mat[i][j]; <span class="comment">// Enter (mat_size*mat_size) value of the matrix.</span></div>
|
||||
<div class="line"><span class="lineno"> 29</span> }</div>
|
||||
<div class="line"><span class="lineno"> 30</span> }</div>
|
||||
<div class="line"><span class="lineno"> 31</span> </div>
|
||||
<div class="line"><span class="lineno"> 32</span> <span class="comment">// perform Gaussian elimination</span></div>
|
||||
<div class="line"><span class="lineno"> 33</span> <span class="keywordflow">for</span> (step = 0; step < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; step++) {</div>
|
||||
<div class="line"><span class="lineno"> 34</span> <span class="keywordflow">for</span> (i = step; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; i++) {</div>
|
||||
<div class="line"><span class="lineno"> 35</span> <span class="keywordtype">double</span> a = (mat[i + 1][step] / mat[step][step]);</div>
|
||||
<div class="line"><span class="lineno"> 36</span> </div>
|
||||
<div class="line"><span class="lineno"> 37</span> <span class="keywordflow">for</span> (j = step; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++)</div>
|
||||
<div class="line"><span class="lineno"> 38</span> mat[i + 1][j] = mat[i + 1][j] - (a * mat[step][j]);</div>
|
||||
<div class="line"><span class="lineno"> 39</span> }</div>
|
||||
<div class="line"><span class="lineno"> 40</span> }</div>
|
||||
<div class="line"><span class="lineno"> 41</span> </div>
|
||||
<div class="line"><span class="lineno"> 42</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
|
||||
<div class="line"><span class="lineno"> 43</span> << <span class="stringliteral">"Matrix using Gaussian Elimination method: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
|
||||
<div class="line"><span class="lineno"> 44</span> <span class="keywordflow">for</span> (i = 0; i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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<div class="line"><span class="lineno"> 45</span> <span class="keywordflow">for</span> (j = 0; j <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; j++) {</div>
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||||
<div class="line"><span class="lineno"> 46</span> x[i][j] = mat[i][j];</div>
|
||||
<div class="line"><span class="lineno"> 47</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << mat[i][j] << <span class="stringliteral">" "</span>;</div>
|
||||
<div class="line"><span class="lineno"> 48</span> }</div>
|
||||
<div class="line"><span class="lineno"> 49</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
|
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<div class="line"><span class="lineno"> 50</span> }</div>
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<div class="line"><span class="lineno"> 51</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
|
||||
<div class="line"><span class="lineno"> 52</span> << <span class="stringliteral">"Value of the Gaussian Elimination method: "</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
|
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<div class="line"><span class="lineno"> 53</span> <span class="keywordflow">for</span> (i = <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; i >= 0; i--) {</div>
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<div class="line"><span class="lineno"> 54</span> <span class="keywordtype">double</span> <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a> = 0;</div>
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<div class="line"><span class="lineno"> 55</span> <span class="keywordflow">for</span> (j = <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a> - 1; j > i; j--) {</div>
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<div class="line"><span class="lineno"> 56</span> x[i][j] = x[j][j] * x[i][j];</div>
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<div class="line"><span class="lineno"> 57</span> <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a> = x[i][j] + <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a>;</div>
|
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<div class="line"><span class="lineno"> 58</span> }</div>
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<div class="line"><span class="lineno"> 59</span> <span class="keywordflow">if</span> (x[i][i] == 0)</div>
|
||||
<div class="line"><span class="lineno"> 60</span> x[i][i] = 0;</div>
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||||
<div class="line"><span class="lineno"> 61</span> <span class="keywordflow">else</span></div>
|
||||
<div class="line"><span class="lineno"> 62</span> x[i][i] = (x[i][<a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>] - <a class="code hl_function" href="../../d8/d77/namespacemachine__learning.html#a6f1c98c016ad34ff3d9f39372161bd35">sum</a>) / (x[i][i]);</div>
|
||||
<div class="line"><span class="lineno"> 63</span> </div>
|
||||
<div class="line"><span class="lineno"> 64</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"x"</span> << i << <span class="stringliteral">"= "</span> << x[i][i] << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
|
||||
<div class="line"><span class="lineno"> 65</span> }</div>
|
||||
<div class="line"><span class="lineno"> 66</span> </div>
|
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<div class="line"><span class="lineno"> 67</span> <span class="keywordflow">for</span> (i = 0; i <= <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>; i++) {</div>
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<div class="line"><span class="lineno"> 68</span> <span class="keyword">delete</span>[] mat[i];</div>
|
||||
<div class="line"><span class="lineno"> 69</span> <span class="keywordflow">if</span> (i < <a class="code hl_variable" href="../../d7/d35/matrix__exponentiation_8cpp.html#a9977ad12548c4a49dee9dc3f0685aa54">mat_size</a>)</div>
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<div class="line"><span class="lineno"> 70</span> <span class="keyword">delete</span>[] x[i];</div>
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<div class="line"><span class="lineno"> 71</span> }</div>
|
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<div class="line"><span class="lineno"> 72</span> <span class="keyword">delete</span>[] mat;</div>
|
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<div class="line"><span class="lineno"> 73</span> <span class="keyword">delete</span>[] x;</div>
|
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<div class="line"><span class="lineno"> 74</span> </div>
|
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<div class="line"><span class="lineno"> 75</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><span class="lineno"> 76</span>}</div>
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<div class="ttc" id="abasic_istream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a></div></div>
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