Strings
Arrays of characters with immutability quirks and a whole family of matching algorithms.
Newinterview weight 8538 problems1 visualisers
18
mastery
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What you actually need to hold in your head
- Immutability makes naive concatenation quadratic
- Character frequency maps
- Palindromes expand from centres
- Pattern matching: KMP, Z, Rabin-Karp
Watch it run
Step through the algorithm before you write it.
Patterns in this topic
The trigger phrases are what you are training yourself to notice.
Strings problems
Ordered by sheet phase, so the early ones are the highest signal.
0 / 38 solved