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Add nine cheat sheets - #2
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- all-41-patterns.md, the night-before revision sheet. Generated from the pattern pages themselves, so it cannot contradict them. - what-complexity-passes.md, reading the intended solution out of the constraints, plus the other tells hidden in a constraints block. - complexity-cheat-sheet.md, every pattern, structure, sorting and graph algorithm with what it costs. - bfs-vs-dfs.md and dp-vs-greedy-vs-backtracking.md, the two comparisons that decide the most answers. - python-vs-java-vs-javascript-idioms.md, the same twenty operations in three languages, plus the traps each language sets. - edge-cases-checklist.md, by input type. - interview-communication.md, the order that works and the sentences that carry weight. - flashcards.md, 103 cards. - cheat-sheets/README.md as the index, and the root README rewritten to match.
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Takes the cheat sheet section from one page to ten. The sibling repo's traffic says cheat sheets outperform everything else, and comparison sheets outperform other cheat sheets, so five of these are comparisons or decision guides.
Read before an interview
all-41-patterns.md, the night-before revision sheet, one card per pattern. Generated from the pattern pages themselves, so the summary, the cue, the cost, and the top mistake can never drift from the page they came from.interview-communication.md, the order that works minute by minute, and the sentences worth memorizing.Read while preparing
what-complexity-passes.md, reading the intended solution out of the constraints, plus the other tells a constraints block carries.complexity-cheat-sheet.md, all 41 patterns, the data structures, the sorts, and the graph algorithms.bfs-vs-dfs.md, where the wrong choice still runs and still gives the wrong answer.dp-vs-greedy-vs-backtracking.md, with the coin counterexample and the two greedy proof shapes.python-vs-java-vs-javascript-idioms.md, the same twenty operations three ways. Names the gaps out loud: JavaScript has no heap and no ordered set, Python has no ordered set. Also the modulo sign difference and the Java midpoint overflow.edge-cases-checklist.md, grouped by input type.flashcards.md, 103 cards.cheat-sheets/README.mdindexes them with a suggested order, and the root README cheat sheet section is rewritten to match.