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Useful loops:

//move forward x spaces
for (var s=0;s<x;s++) 
   move(); 

//collect x balls in a row
for (var s=0;s<x;s++){
   takeBall();
   move();
}


// climb z steps
for (var i=0;i<z; i++){
  turnLeft();
  move();
  turnRight;
  move();
}
example: use a for loop to rewrite this:
   takeBall();
   move();
   takeBall();
   move();