add flashcard generation tooling and binary search cards

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- gen-flashcards.py: auto-generate recognition cards from all problem files
- toolkit/gen-problem-cards.org: 199 auto-generated problem cards
- 5 binary search tool cards (std::binary_search, std::lower_bound, comparison, two-sum pattern, sorting gotcha)
- two-sum.org: add binary search C++ attempt
- lc-org.el: add doom emacs localleader keybinding support

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Wong Ding Feng

2026-06-08 01:28:25 +08:00

parent c67841fe07

commit e10cc4257d

9 changed files with 2052 additions and 9 deletions

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org/study_deck_02/toolkit/gen-problem-cards.org

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