Status: IN
Solutions import only from the Python standard library (`unittest`, `typing`, `collections`, `annotations`) — no external packages are used anywhere in the repo
Source: entries/2026/06/06/number-of-valid-words-in-a-sentence-solution.md, entries/2026/06/06/occurrences-after-bigram-solution.md, entries/2026/06/06/odd-string-difference-solution.md, entries/2026/06/06/palindrome-linked-list-solution.md, entries/2026/06/06/palindrome-number-solution.md
JSON