Topic 21 — 1-D Dynamic Programming
Finished Fri, Sep 25, 2026, 2:00 PM ET: all 3 core problems closed, 3 problems closed that day.
Scheduled: Fri Sep 25, 2026 · Phase: Phase V — Decision Space · Topic: #23 · Builds on: Topic 20
Closed Sep 25 — the day the topic finished
| Issue | Problem | Set | Difficulty | Closed (ET) | Solution |
|---|---|---|---|---|---|
| #157 | LC 70 · Climbing Stairs | core | easy | Sep 25 | py · docs |
| #158 | LC 198 · House Robber | core | medium | Sep 25 | py · docs |
| #159 | LC 322 · Coin Change | core | medium | Sep 25 | py · docs |
Open at release
| Issue | Problem | Set | Difficulty | Closed (ET) | Solution |
|---|---|---|---|---|---|
| #160 | LC 746 · Min Cost Climbing Stairs | optional | easy | — | — |
| #161 | LC 213 · House Robber II | optional | medium | — | — |
| #162 | LC 300 · Longest Increasing Subsequence | optional | medium | — | — |
| #163 | LC 139 · Word Break | optional | medium | — | — |
| #164 | LC 91 · Decode Ways | optional | medium | — | — |
| #165 | LC 647 · Palindromic Substrings | optional | medium | — | — |
| #222 | LC 494 · Target Sum | optional | medium | — | — |
20260925.180040.000000000 is timever for the UTC instant the core set completed; it tags 6f9e4ec, the last main commit before it.