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Here is today.
Phase Blind 75 · 0 of 75 solved · plan sized for 90 minutes
Today's plan
Built by fitting the highest-value problems into the time you have, reviews first.
Reviews are scheduled by a free-spaced-repetition scheduler, and the rest is a knapsack fill over your remaining minutes. Problems are scored by how close they sit to a 70 percent chance of you solving them.
Recommended next
Scored on pattern mastery, your rating, interview frequency and your target company.
This week
One topic in the spotlight per week, with the visualiser and the five problems that matter most.
Interview readiness
Pick a target and the whole app reorders around it.
Choose a target company to get a readiness score and a reordered plan.
Weakest right now
Ranked by mastery gap times interview weight.
Topic mastery
Bayesian knowledge tracing across the topics that matter most.
Critical, still unsolved
High frequency problems flagged as non-negotiable.
See it move
46 step-by-step visualisers with narration, pseudocode tracing and editable input.
Halve the search space each step by comparing the target to the midpoint of a sorted range.
Koko eating bananas. The array is not sorted, but feasibility is monotonic in the eating speed, so binary search the speed instead of the array.
On a sorted array, one pointer at each end. Move the pointer that can only push the sum in the direction you need.
Longest subarray whose sum stays within a limit. Grow on the right, shrink on the left whenever the window breaks the rule.