Thanks for replying, I'm already update my solution.

Nice

This is PEP 572 feature, nice :)

yep :)

Something wrong in the description Examples part (Python).   Seen below

Examples:

>>> build_trie()
{}
>>> build_trie("")
{}
>>> build_trie("trie")
{'t': {'tr': {'tri': {'trie': None}}}}
>>> build_trie("tree")
{'t': {'tr': {'tre': {'tree': None}}}}
>>> build_tree("A","to", "tea", "ted", "ten", "i", "in", "inn")
{'A': None, 't': {'to': None, 'te': {'tea': None, 'ted': None, 'ten': None}}, 'i': {'in': {'inn': None}}}
>>> build_trie("true", "trust")
{'t': {'tr': {'tru': {'true': None, 'trus': {'trust': None}}}}}

>>> build_tree("A","to", "tea", "ted", "ten", "i", "in", "inn")
{'A': None, 't': {'to': None, 'te': {'tea': None, 'ted': None, 'ten': None}}, 'i': {'in': {'inn': None}}}

build_tree ?

Traceback (most recent call last):
  File "/workspace/default/src/codewars-test/codewars_test/test_framework.py", line 111, in wrapper
    func()
  File "tests.py", line 60, in sample_tests
    tester(grid, escape)
  File "/workspace/default/preloaded.py", line 88, in tester
    test.fail(f'You returned None. However a solution was avaliable in {least_moves} moves.')
NameError: name 'test' is not defined

Python3.8   Sample Test

.

Nice and this algorithm is not working anymore :o

tests/Fixture.cs(7,3): error CS1585: Member modifier 'public' must precede the member type and name

Thx and your suggestion is good.

First sort by the length, next sort by every elements in array.

My bad. Fixed

This one is performance version.

 500 Random Tests --- Testing for performance of solution

Many solutions from version 1 can't pass the performance test

I want to approve this but got

{"success":false,"message":"Language Version is invalid for rust","errors":[{"reason":"Language Version is invalid for rust","fields":["language_version"]}]}