Curriculum/Track 01COMPLETE

Arrays & Strings.

Indexing, in-place mutation, prefix sums, and the string operations that show up everywhere else.

requiresnothing

Progress

34/ 34 solved

5 visualizers 34 editorials 11 h of focused work

Chapters unlock with the track. Complete the foundation tier first.

What you will be able to do

→Mutate an array in place without a second buffer.

→Reach for a prefix sum before writing a nested loop.

→Handle the four off-by-one cases that break every two-index loop.

Problems loaded here

5of 34 in the full track

This build ships a representative sample of the catalogue rather than every problem in it.