Notes
Notes
Algorithms

Practice problems in JavaScript, TypeScript, and Swift.

A small set of worked solutions and implementation notes for interview-style problems and coding drills.

3 live topics, more on the way
Topics
Available nowTwo Number Sum
Open

Hash map lookup for finding the matching pair in linear time.

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Available nowRight Smaller Than
Open

A straightforward count-from-the-right implementation and problem framing.

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Coming soonLongest Substring Without Repeating Characters
Soon

Sliding-window notes for the classic distinct-character problem.

In progress→
Coming soonN-Repeated Element in Size 2N Array
Soon

Pattern spotting and frequency-based shortcuts for repeated elements.

In progress→
Coming soonMake Sum Divisible by P
Soon

Prefix-sum reasoning for divisibility and subarray removal.

In progress→
Available nowSort Vowels in a String
Open

A Swift solution that sorts only vowels while preserving consonant positions.

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Coming soonMedian of Two Sorted Arrays
Soon

Binary-search partitioning notes for one of the trickier array problems.

In progress→