Suffix-array

3 articles

dsa2 min read

String Algorithms — Complete Guide (KMP, Z, Rolling Hash, Suffix Array)

Master advanced string algorithms: KMP failure function for O(n) pattern matching, Z-algorithm for all prefix matches, Rabin-Karp rolling hash, and suffix arrays for substring queries.

March 1, 2025Read →

dsa2 min read

Suffix Array — O(n log n) Construction and Applications

Build a suffix array in O(n log²n) using doubling sort. Enables O(m log n) substring search, longest common substring, and number of distinct substrings.

March 1, 2025Read →

dsa1 min read

Count Distinct Substrings — Suffix Array + LCP

Count the number of distinct substrings using the suffix array and LCP array. Total substrings minus sum of LCP values gives distinct count in O(n log n).

March 1, 2025Read →