matrix/randomInit.c

#include "myMatrix.h"

void matrixRandomInit(int matrixArr[9][9]){
  int map[9] = {1,2,3,4,5,6,7,8,9};
  int mp;
  srand(time(NULL));
  for(int i=0;i<9;i++){
    for(int j=0;j<9;j++){
      matrixArr[i][j] = 0;
    }
  }
  for(int i=0;i<9;i++){
    if(i%3==0){
      mp=0;
      for(int j=0;j<8;j++){
        int n = i+rand()%(8-i);
        int tmp = map[i];
        map[i] = map[n];
        map[n]=tmp;
      }
    }
    int k=0;
    while(k<3){
      int tmpP = rand()%9;
      if(matrixArr[i][tmpP]==0){
        matrixArr[i][tmpP] = map[mp++];
        k++;
      }
    }
  }
}

int main(){
  int board[9][9];
  matrixRandomInit(board);
  matrixOutput(board);
  return 0;
}