Arrays and strings
Comes up in: DSA
This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.
What it covers
- indexing, insertion/deletion cost
- in-place algorithms
- string building
- character codes
- matrix traversal (row/column, spiral, diagonals)
Words you will know
What you will practise
- warm-ups 4–8
- matrix set: spiral-matrix (M)
- rotate-image (M)
- set-matrix-zeroes (M)