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<div id="projectbrief">Set of algorithms implemented in C.</div>
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<a href="#nested-classes">Data Structures</a> &#124;
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<div class="title">sudoku_solver.c File Reference</div> </div>
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<p>Sudoku Solver using recursive implementation of brute-force algorithm.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;assert.h&gt;</code><br />
<code>#include &lt;inttypes.h&gt;</code><br />
<code>#include &lt;math.h&gt;</code><br />
<code>#include &lt;stdbool.h&gt;</code><br />
<code>#include &lt;stdio.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for sudoku_solver.c:</div>
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</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/d18/structsudoku.html">sudoku</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Structure to hold the matrix and dimensions. <a href="../../dc/d18/structsudoku.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga85d25d3b40017436f264a103685e4c55"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga85d25d3b40017436f264a103685e4c55">OKrow</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a, int x, int y, int v)</td></tr>
<tr class="memdesc:ga85d25d3b40017436f264a103685e4c55"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if <code>x</code>^th row is valid. <a href="../../d5/df4/group__sudoku.html#ga85d25d3b40017436f264a103685e4c55">More...</a><br /></td></tr>
<tr class="separator:ga85d25d3b40017436f264a103685e4c55"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6503128d4f5ce0a0826f72f73f9e0b2a"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga6503128d4f5ce0a0826f72f73f9e0b2a">OKcol</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a, int x, int y, int v)</td></tr>
<tr class="memdesc:ga6503128d4f5ce0a0826f72f73f9e0b2a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if <code>y</code>^th column is valid. <a href="../../d5/df4/group__sudoku.html#ga6503128d4f5ce0a0826f72f73f9e0b2a">More...</a><br /></td></tr>
<tr class="separator:ga6503128d4f5ce0a0826f72f73f9e0b2a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga1cd43df3f4187845ce186042fe53e6f1"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga1cd43df3f4187845ce186042fe53e6f1">OKbox</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a, int x, int y, int v)</td></tr>
<tr class="memdesc:ga1cd43df3f4187845ce186042fe53e6f1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if a 3x3 box is valid. <a href="../../d5/df4/group__sudoku.html#ga1cd43df3f4187845ce186042fe53e6f1">More...</a><br /></td></tr>
<tr class="separator:ga1cd43df3f4187845ce186042fe53e6f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3a0ec150ac9d0cb6b28279d36d95d72f"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga3a0ec150ac9d0cb6b28279d36d95d72f">OK</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a, int x, int y, int v)</td></tr>
<tr class="memdesc:ga3a0ec150ac9d0cb6b28279d36d95d72f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if element <code>v</code> is valid to place at (x,y) location. <a href="../../d5/df4/group__sudoku.html#ga3a0ec150ac9d0cb6b28279d36d95d72f">More...</a><br /></td></tr>
<tr class="separator:ga3a0ec150ac9d0cb6b28279d36d95d72f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga702ff4f95dde780c7d04fcdd1021b6c1"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga702ff4f95dde780c7d04fcdd1021b6c1">print</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a)</td></tr>
<tr class="memdesc:ga702ff4f95dde780c7d04fcdd1021b6c1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Print the matrix to stdout. <a href="../../d5/df4/group__sudoku.html#ga702ff4f95dde780c7d04fcdd1021b6c1">More...</a><br /></td></tr>
<tr class="separator:ga702ff4f95dde780c7d04fcdd1021b6c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga62e94fc39f116e2c81daed8f5437431b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#ga62e94fc39f116e2c81daed8f5437431b">get_next_unknown</a> (const struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a, int *x, int *y)</td></tr>
<tr class="memdesc:ga62e94fc39f116e2c81daed8f5437431b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Find and get the location for next empty cell. <a href="../../d5/df4/group__sudoku.html#ga62e94fc39f116e2c81daed8f5437431b">More...</a><br /></td></tr>
<tr class="separator:ga62e94fc39f116e2c81daed8f5437431b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gadfe0ed5085b4775d8fa00b434cc0fdfc"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/df4/group__sudoku.html#gadfe0ed5085b4775d8fa00b434cc0fdfc">solve</a> (struct <a class="el" href="../../dc/d18/structsudoku.html">sudoku</a> *a)</td></tr>
<tr class="memdesc:gadfe0ed5085b4775d8fa00b434cc0fdfc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Function to solve a partially filled sudoku matrix. <a href="../../d5/df4/group__sudoku.html#gadfe0ed5085b4775d8fa00b434cc0fdfc">More...</a><br /></td></tr>
<tr class="separator:gadfe0ed5085b4775d8fa00b434cc0fdfc"><td class="memSeparator" colspan="2">&#160;</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><b>test</b> ()</td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top"><a id="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/dac/sudoku__solver_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Main function. <br /></td></tr>
<tr class="separator:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Sudoku Solver using recursive implementation of brute-force algorithm. </p>
<p>Given an incomplete N*N Sudoku and asked to solve it using the following recursive algorithm:</p><ol type="1">
<li>Scan the Sudoku from left to right row-wise to search for an empty cell.</li>
<li>If there are no empty cells, print the Sudoku. Go to step 5.</li>
<li>In the empty cell, try putting numbers 1 to N while ensuring that no two numbers in a single row, column, or box are same. Go back to step 1.</li>
<li>Declare that the Sudoku is Invalid.</li>
<li>Exit.</li>
</ol>
<dl class="section author"><dt>Authors</dt><dd><a href="https://github.com/anujms1999">Anuj Shah</a> </dd>
<dd>
<a href="https://github.com/kvedala">Krishna Vedala</a> </dd></dl>
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