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PORandom sudoku generation
 

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    <p>I'm writing a function that should generate random sudoku puzzles for a simulation project; this funcion takes as argoument the number of cells to generate then it generates the indexes of cells and numbers to put in those cells. I have a problem in generation of cells indexes, I'm not an expert in programming and i can't find a good routine to generate indexes and to check out not to be the same index couple two times or more. The funcion is:</p> <pre><code>void gen_puzzle(int quanti) { if(quanti&gt;81) exit(1); indexes* ij=new indexes[quanti]; int f,g,k, controllo=1; do { for(f=0; f&lt;9; f++) for(g=0; g&lt;9; g++) { puzzle[f][g].num=0;//puts 0 in the sudoku puzzle puzzle[f][g].p=0; } //////////////section to improve out: srand(int(time(0)+clock())); for(k=0; k&lt;quanti; k++) ij[k].i=casuale()-1, ij[k].j=casuale()-1;//generates random indexes of sudoku cells where put random nubers for(f=0; f&lt;quanti; f++) for(g=f+1; g&lt;quanti; g++) { if(ij[f].i==ij[g].i &amp;&amp; (ij[f].j==ij[g].j)) goto out; } //////////////////// for(k=0; k&lt;quanti; k++) puzzle[ij[k].i][ij[k].j] . num=casuale();//puts random numbers in cells } while(dataNotGood()); //till sudoku isn't good } </code></pre> <p>I ask help for section where the funcion puts random indexes in <code>ij[]</code> array, i used a <code>goto</code> but it's not a good solution and it doesn't work well if <code>quanti</code> is bigger then 17 about.<br> <code>casuale()</code> just returns a random number between 1 and 9.</p>
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    1. USMarek Grzenkowicz
    1. USluca.violino
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      1. PORandom sudoku generation
      1. USAndrei Ciobanu
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    1. COIt would really help if you translate your Italian(?) comments and variable names
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      1. USJan Jongboom
    2. COtranslated a bit... quanti is just the numbers of cells to generate, and indexes is just a struct with two integers
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      1. USluca.violino
 

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