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Claude Skills by 0bserver07
github.com/0bserver0713 skills0 installs20 views
- BfsBreadth-first search — shortest path on unweighted graphs, level-order traversal, and the `visited` discipline that prevents O(2^n) blowups.Votes: 0GitHub stars: 3
- Binary SearchBinary search invariants, half-open intervals, and the `lo<hi` template that beats off-by-one bugs.Votes: 0GitHub stars: 3
- DfsDepth-first search — recursive vs iterative, recursion-depth gotchas, three-color cycle detection, topological sort.Votes: 0GitHub stars: 3
- DpDynamic programming — state design, memoization vs tabulation, dimension-reduction, and when DP is the wrong tool.Votes: 0GitHub stars: 3
- Graph TraversalPick the right traversal — BFS for unweighted shortest path, Dijkstra for weighted, A* for goal-directed, 0/1-BFS for binary weights.Votes: 0GitHub stars: 3
- GreedyGreedy algorithms — exchange-argument proofs, when greedy beats DP, classic patterns (interval scheduling, Huffman, scheduling).Votes: 0GitHub stars: 3
- HashHash maps and sets — when O(1) lookup pays off, hash collisions, frozen keys, and hashing custom types.Votes: 0GitHub stars: 3
- Math TricksNumber-theory and bit-twiddling cheat-sheet — gcd, modular exponentiation, sieve, popcount, divisor enumeration, fast prime tests.Votes: 0GitHub stars: 3
- RecursionRecursion — base case, recursive case, recursion-depth limits, tail vs non-tail, when to convert to iteration.Votes: 0GitHub stars: 3
- Sliding WindowSliding window — fixed and variable size, expand-shrink invariant, hash-state-tracking for substring problems.Votes: 0GitHub stars: 3
- SortingSorting — when to call the built-in, when to roll your own (counting / radix / heap), stability, custom comparators.Votes: 0GitHub stars: 3
- String AlgosString algorithms cheat-sheet — KMP, Rabin-Karp rolling hash, Z-array, suffix arrays, anagram patterns, and when to use built-ins.Votes: 0GitHub stars: 3
- Two PointersTwo-pointer scans — opposite ends, same direction, fast/slow — for sorted arrays, partitioning, cycle detection.Votes: 0GitHub stars: 3