My progress
Your topic mastery, mock exam scores and mistakes log, saved in your own browser.
A topic is mastered when you solve its mastery-check problem with no hints and then explain it in your own words. Each topic page ends with a Your mastery check card. Tick it there, and everything shows up below.
No account needed
Your progress is saved only in this browser (nothing is sent to any server, so nobody else can see it). That means it's per person and per device: use Export below to keep a backup or to move to another device.
Topics
| Topic | Status | Mode that worked | Updated |
|---|---|---|---|
| 0 · Math toolkit: logs, exponents, sums | Not started | — | — |
| 1 · What an algorithm is & counting its steps | Not started | — | — |
| 2 · Proof techniques | Not started | — | — |
| 3 · Correctness: loop invariants, pre/postconditions | Not started | — | — |
| 4 · Insertion sort | Not started | — | — |
| 5 · Loop-analysis rules & space complexity | Not started | — | — |
| 6 · Asymptotic notation: O, Ω, Θ | Not started | — | — |
| 7 · Divide & conquer + merge sort | Not started | — | — |
| 8 · Recurrences: recursion trees & guess-and-verify | Not started | — | — |
Tick the “Your mastery check” card at the bottom of each topic page.
Mock exams
Bands: 45+ ready · 35–44 review your mistakes · below 35 redo the weakest topics.
My mistakes
Every mistake from a drill or mock exam goes here: what you did, why, and the fix. Reread it before the exam.
Backup & other devices
Your progress lives only in this browser. Clearing browsing data erases it, so export a backup now and then. To continue on another device, export here and import there.