Reachability on Jeanphilo Bloghttps://jeanphilogong.github.io/jeanblog/tags/reachability/Recent content in Reachability on Jeanphilo BlogHugo -- 0.168.0en-usFri, 03 Jul 2026 00:00:00 +0800LeetCode 55: Jump Game With Farthest Reach Greedyhttps://jeanphilogong.github.io/jeanblog/alg/leetcode/hot100/greedy/55-jump-game/Fri, 03 Jul 2026 00:00:00 +0800https://jeanphilogong.github.io/jeanblog/alg/leetcode/hot100/greedy/55-jump-game/Solve LeetCode 55 Jump Game in Python by deriving reachability from a zero barrier, a reachable-array baseline, and the farthest reachable range greedy.k-hop and Reachability Queries: BFS Limits, Reachability Indexes, and 2-hop Labeling ACERS Analysishttps://jeanphilogong.github.io/jeanblog/dev/algorithm/graph/30-k-hop-reachability-and-reach-index/Mon, 09 Feb 2026 09:52:17 +0800https://jeanphilogong.github.io/jeanblog/dev/algorithm/graph/30-k-hop-reachability-and-reach-index/A systematic engineering guide to k-hop and reachability queries: BFS+hop limits, why full transitive closure is usually not maintained, and practical bitmap/2-hop reach-index strategies with runnable multi-language code.