offer_4

//面试题4：二维数组的查找
bool Find(int* matrix, int rows,int columns,int number)
{
  bool found=false;
  if(matrix !=nullptr && rows>0 && colunms>0)
  {
    int row=0;
    int column=columns-1;
    while(row<rows && colunm>=0)
    {
      if(matrix[row*columns+column] == number){
        found=true;
        break;
      }else if(matrix[row*columns+column] > number){
        --column;
      }else{
        ++row;
      }
    }
  }
  return found;
}