prdlk — Changelog https://lc.prd.lk Documentation for my LeetCode solutions Topic 21 — 1-D Dynamic Programming https://lc.prd.lk/changelog/180040-000000000 https://lc.prd.lk/changelog/180040-000000000 Fri, 25 Sep 2026 18:00:40 GMT Topic 20 — Backtracking https://lc.prd.lk/changelog/183638-000000000 https://lc.prd.lk/changelog/183638-000000000 Thu, 24 Sep 2026 18:36:38 GMT Topic 19 — Union-Find https://lc.prd.lk/changelog/194052-000000000 https://lc.prd.lk/changelog/194052-000000000 Wed, 23 Sep 2026 19:40:52 GMT Topic 18 — Topological Sort https://lc.prd.lk/changelog/190245-000000000 https://lc.prd.lk/changelog/190245-000000000 Tue, 22 Sep 2026 19:02:45 GMT Topic 17 — Graph BFS https://lc.prd.lk/changelog/165949-000000000 https://lc.prd.lk/changelog/165949-000000000 Tue, 22 Sep 2026 16:59:49 GMT Topic 16 — Graph DFS https://lc.prd.lk/changelog/220548-000000000 https://lc.prd.lk/changelog/220548-000000000 Mon, 21 Sep 2026 22:05:48 GMT Topic 15 — Trie https://lc.prd.lk/changelog/165108-000000000 https://lc.prd.lk/changelog/165108-000000000 Mon, 21 Sep 2026 16:51:08 GMT Topic 14 — Heap / Priority Queue https://lc.prd.lk/changelog/165008-000000000 https://lc.prd.lk/changelog/165008-000000000 Mon, 14 Sep 2026 16:50:08 GMT Topic 13 — Binary Search Tree https://lc.prd.lk/changelog/203314-000000000 https://lc.prd.lk/changelog/203314-000000000 Sat, 05 Sep 2026 20:33:14 GMT Topic 12 — Tree BFS https://lc.prd.lk/changelog/204425-000000000 https://lc.prd.lk/changelog/204425-000000000 Fri, 04 Sep 2026 20:44:25 GMT Topic 11 — Tree DFS https://lc.prd.lk/changelog/181810-000000000 https://lc.prd.lk/changelog/181810-000000000 Thu, 03 Sep 2026 18:18:10 GMT Topic 10 — Matrix Index Math https://lc.prd.lk/changelog/205241-000000000 https://lc.prd.lk/changelog/205241-000000000 Wed, 02 Sep 2026 20:52:41 GMT Topic 09 — Hybrid Structures https://lc.prd.lk/changelog/182216-000000000 https://lc.prd.lk/changelog/182216-000000000 Tue, 01 Sep 2026 18:22:16 GMT Topic 08 — Linked List https://lc.prd.lk/changelog/161216-000000000 https://lc.prd.lk/changelog/161216-000000000 Mon, 31 Aug 2026 16:12:16 GMT Topic 07 — Monotonic Stack https://lc.prd.lk/changelog/195254-000000000 https://lc.prd.lk/changelog/195254-000000000 Fri, 28 Aug 2026 19:52:54 GMT Topic 06 — Stack https://lc.prd.lk/changelog/192131-000000000 https://lc.prd.lk/changelog/192131-000000000 Thu, 27 Aug 2026 19:21:31 GMT Topic 05 — Binary Search https://lc.prd.lk/changelog/192603-000000000 https://lc.prd.lk/changelog/192603-000000000 Wed, 26 Aug 2026 19:26:03 GMT Topic 04 — Sliding Window https://lc.prd.lk/changelog/190101-000000000 https://lc.prd.lk/changelog/190101-000000000 Tue, 25 Aug 2026 19:01:01 GMT Topic 03 — Two Pointers https://lc.prd.lk/changelog/202212-000000000 https://lc.prd.lk/changelog/202212-000000000 Mon, 24 Aug 2026 20:22:12 GMT Topic 01 — Hash-Based Lookup https://lc.prd.lk/changelog/182006-000000000 https://lc.prd.lk/changelog/182006-000000000 Mon, 24 Aug 2026 18:20:06 GMT Topic 02 — Prefix Sum https://lc.prd.lk/changelog/182003-000000000 https://lc.prd.lk/changelog/182003-000000000 Mon, 24 Aug 2026 18:20:03 GMT