Problem Set 4

What to Do

  1. Submit one of:
  2. Submit Recover
  3. Submit this form

If you submit both versions of Filter, we’ll record the higher of your two scores.

When to Do It

By 11:59pm on Mon 10/7.

How to Get Help

  1. Ask questions on Ed!
  2. Sign up for a tutorial!
  3. Attend office hours!
  4. Email!


  • Try out any of David’s programs from class via Week 4’s sandboxes.
  • If you see any errors when compiling your code with make, focus first on fixing the very first error you see, scrolling up as needed. If unsure what it means, try asking help50 for help. For instance, if trying to compile hello, and
    make filter

    is yielding errors, try running

    help50 make filter