private Cuboid(String worldName,int x1,int y1,int z1,int x2,int y2,int z2){
  this.worldName=worldName;
  this.x1=Math.min(x1,x2);
  this.x2=Math.max(x1,x2);
  this.y1=Math.min(y1,y2);
  this.y2=Math.max(y1,y2);
  this.z1=Math.min(z1,z2);
  this.z2=Math.max(z1,z2);
}

private Cuboid ( String worldName , int x1 , int y1 , int z1 , int x2 , int y2 , int z2 ) { this . worldName = worldName ; this . x1 = Math . min ( x1 , x2 ) ; this . x2 = Math . max ( x1 , x2 ) ; this . y1 = Math . min ( y1 , y2 ) ; this . y2 = Math . max ( y1 , y2 ) ; this . z1 = Math . min ( z1 , z2 ) ; this . z2 = Math . max ( z1 , z2 ) ; }
construct a cuboid in the given world name and xyz co - ordinates .
