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  1. /**
  2.  *
  3.  * 
  4.  */
  5. import java.util.Random;
  6. public class Sudoku {
  7.         public static void main(String args[]){
  8.  
  9.             Random generator = new Random();
  10.  
  11.             int edge=3, rowbase=0, colbase=0;
  12.             int[][] sudoku = new int [9][9];
  13.             int i=0, j=0, temp=0, l=0, m=0, n=0, count=0, rcounter=0;
  14.             int[] regionCheck = new int [9];
  15.             for(i=0; i<9; i++){
  16.                for (j=0; j<9; j++){
  17.                     sudoku[i][j]=0;
  18.                 }
  19.             }            
  20.             boolean isUsed;
  21.  
  22.            //Everything above is initialization, icky.
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  48.             for (i=0; i<9; i++){
  49.                 for(j=0; j<9; j++){
  50.                     isUsed=false;
  51.                     temp = generator.nextInt(9)+1;
  52.  
  53.                     for(l=0; l<9; l++){//Makes all vertical work.
  54.                        if(sudoku[l][j] == temp){
  55.                            isUsed=true;
  56.                        }
  57.                     }                  
  58.                     for(m=0; m<9; m++){//makes all horizontal work
  59.                        if(sudoku[i][m] == temp){
  60.                            isUsed=true;
  61.                        }
  62.                     }
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  72.  
  73.                     if(count >= 100){
  74.                         for(l=0; l<9; l++){
  75.                             sudoku[i][l]=0;
  76.                         }
  77.                         j=0;
  78.                     }
  79.                     if (count >1000){
  80.                         count=0;
  81.                         i--;
  82.                         break;
  83.                     }
  84.                     rowbase = i-(i%3);
  85.                     if(i==2  || i==5 || i==8 ){
  86.                         if(rowbase == 0 || rowbase == 3 || rowbase == 6){
  87.                            isUsed= RegionCheck.RegCheck(rowbase, sudoku);
  88.                         }
  89.                     }
  90.  
  91.                 if(isUsed==false){
  92.                     sudoku[i][j]=temp;
  93.                     }
  94.                     else{
  95.                         count++;
  96.                         j--;
  97.                     }//end else
  98.                 }//End inner for loop
  99.             }//End outer for loop
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  112.             for(i=0; i<9; i++){
  113.                for (j=0; j<9; j++){
  114.                     System.out.print(sudoku[i][j] + " | ");
  115.                 }
  116.                 System.out.println();
  117.                 System.out.println("-----------------------------------");
  118.             }
  119.  
  120.         }//End main
  121. }//end class
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  132.  
  133. //////////////////////
  134. ///RegionCheck.java
  135. //////////////////////
  136. /**
  137.  *
  138.  * 
  139.  */
  140. public class RegionCheck {
  141.     public  static boolean RegCheck(int regionY, int[][] sudoku){
  142.         boolean okay = false;
  143.         int[] regionUsed = new int[9];
  144.         int i=0, j=0, regionTester=0, counter=0, numcount;
  145.         for (i=regionTester; i<regionTester+3; i++){
  146.             for (; j<3; j++){
  147.                regionUsed[counter]=sudoku[i][j];
  148.                counter++;
  149.             }
  150.         }
  151.         for(i=0; i<9; i++){
  152.             numcount=regionUsed[i];
  153.             for(j=0; j<9; j++){
  154.                 if(j==i){
  155.                     //null
  156.                 }
  157.                 else if(numcount == regionUsed[j]){
  158.                     okay=false;
  159.                 }
  160.             }
  161.         }
  162.  
  163.         return okay;
  164. }//End Method
  165.  
  166. }
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https://ideone.com/FYLwm
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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