duplicate of this issue

duplicate of this issue

Solved the problem. The question arose due to a misunderstanding. Clear question == clear answer.

You haven't implemented this case:

• If two monomials have the same number of variables, they appears in lexicographic order, e.g.:
  "a+ca-ab" -> "a-ab+ac", "xzy+zby" ->"byz+xyz"

In the first example, 4a should come first before b since a < b in lexicographical order. Same with the second example, fk < kq.

Hi! An error is issued:
poly = 3a+b+4ac+bc-ab+3a-cb-a-a
Sorry :( : 'b+4a-ab+4ac' should equal '4a+b-ab+4ac'
by the condition of the problem, this is true! 'b+4a-ab+4ac'

poly = -8fk+5kv-4yk+7kf-qk+yqv-3vqy+4ky+4kf+yvqkf
Sorry :( : '-kq+3fk+5kv-2qvy+fkqvy' should equal '3fk-kq+5kv-2qvy+fkqvy'
by the condition of the problem, this is true! '-kq+3fk+5kv-2qvy+fkqvy'

Fix it or test it or tell me where I'm wrong.

Enabled in this fork

On Haskell there is a bug in testing code:

In random tests, for example, having a list of monomials: ("", -1), ("b", -9), <...>
so, the system says:
expected: "--9b+ <...>"
got: "-9b <...>"

Obviously, that testing code doesn't work correct for monomial "-1", because, it reduces that to "-" (like "-1a" should be reduced to "-a")

So, could you please, check this behaviour and fix it?

Regards

fork

Python fork (author gone)

• proper use of the test framework
• random tests (fixing this issue)

😄👍

Thank you for this kata! Nice! I've been solving for a long time, but i enjoyed it.

How do I understand which tests were used in the section "More complicated tests"? Otherwise I won't understand how to fix the code. All other tests are solved correctly.

I still am struggling to understand this🤔. Can someone explain it in a dummy way, please?

doesn't "5ab" have a number of variables greater than "-c"?
Maybe you're misunderstanding the instructions. Each letter is a variable, you must sort by the "number of variables", not by the coefficient

low