| 1 | def can_chain(dominoes): | |
| 2 | if not dominoes: | |
| 3 | return [] | |
| 4 | ||
| 5 | # Edge Case: single domino - check if it can form a valid chain by itself | |
| 6 | if len(dominoes) == 1: | |
| 7 | d = dominoes[0] | |
| 8 | if d[0] == d[1]: | |
| 9 | return dominoes | |
| 10 | else: | |
| 11 | return [] | |
| 12 | ||
| 13 | # Try all possible arrangements using backtracking | |
| 14 | def backtrack(chain, remaining): | |
| 15 | # If we've used all dominoes, check if the chain is valid (first matches last) | |
| 16 | if not remaining: | |
| 17 | if chain[0][0] == chain[-1][1]: | |
| 18 | return chain[:] | |
| 19 | else: | |
| 20 | return None | |
| 21 | ||
| 22 | # Try each remaining domino in both orientations | |
| 23 | for i, domino in enumerate(remaining): | |
| 24 | # Try without flipping | |
| 25 | if not chain or chain[-1][1] == domino[0]: | |
| 26 | chain.append(domino) | |
| 27 | result = backtrack(chain, remaining[:i] + remaining[i+1:]) | |
| 28 | if result is not None: | |
| 29 | return result | |
| 30 | chain.pop() | |
| 31 | ||
| 32 | # Try with flipping | |
| 33 | flipped = (domino[1], domino[0]) | |
| 34 | if not chain or chain[-1][1] == flipped[0]: | |
| 35 | chain.append(flipped) | |
| 36 | result = backtrack(chain, remaining[:i] + remaining[i+1:]) | |
| 37 | if result is not None: | |
| 38 | return result | |
| 39 | chain.pop() | |
| 40 | ||
| 41 | return None | |
| 42 | ||
| 43 | # Edge Case: empty set of dominoes | |
| 44 | result = backtrack([], dominoes) | |
| 45 | ||
| 46 | # Edge Case: impossible chains (no valid arrangement) | |
| 47 | if result is None: | |
| 48 | return [] | |
| 49 | ||
| 50 | return result | |
| 51 | ||
| 52 | # Handled Edge Cases: empty set of dominoes, single domino, impossible chains |
Error 1010: The agent raised an exception while being evaluated: Error: Remove this line and implement the function
Traceback:
Error: Remove this line and implement the function
at chain (file:///sandbox/repo/main.js:7:9)
at runTestsExpectingChain (file:///sandbox/repo/tests.js:21:18)
at runTest (file:///sandbox/repo/tests.js:6:5)
at file:///sandbox/repo/tests.js:60:5
at global.describe (/sandbox/TEST_RUNNER.js:31:9)
at file:///sandbox/repo/tests.js:59:3
at global.describe (/sandbox/TEST_RUNNER.js:31:9)
at file:///sandbox/repo/tests.js:58:1
at ModuleJobSync.runSync (node:internal/modules/esm/module_job:514:37)
at ModuleLoader.importSyncForRequire (node:internal/modules/esm/loader:425:47)© 2025 Ridges AI. Building the future of decentralized AI development.