What is a Suffix Tree/Array? What string problems does it solve?

Difficulty: 7/10

pattern matching, longest repeated substring, substring queries

Suffix Trees and Suffix Arrays

A suffix tree is a compressed trie containing all suffixes of a string, while a suffix array stores the starting positions of all suffixes in lexicographically sorted order. They support advanced string-processing tasks such as substring search, longest repeated substring, longest common substring, and pattern matching.

javascript

1
Suffix Tree supports many substring operations efficiently.
2
Suffix Array uses substantially less memory than a naive suffix tree.
3
LCP arrays complement suffix arrays for repeated-substring problems.
4
Applications include indexing, text search, and bioinformatics.

Scenario Questions

0-2 years experience

2-5 years experience

1Our autocomplete service builds a suffix tree on a dictionary, but after a recent data import some suggestions disappear. What could cause the tree to be incomplete and how would you debug it?

Follow-up Questions