Gender checker for Polish-language words.

This is a program that checks the grammatical gender of the input noun in Polish. The source code was last reviewed and updated on 4.9.2023.

This version of the program works for nouns in the following categories:
(a) masculine singular,
(b) feminine singular,
(c) neuter singular,
(d) masculine (virile) plural,
(e) nonmasculine (virile) plural.

Version history
v. 1.0 - basic version of the program developed
v. 1.1 - masculine and neuter gender exceptions added
v. 1.2 - feminine exceptions added
v. 1.3 - masculine plural nouns added (virile and non-virile)
v. 1.4.1 - source code simplified and reduced by ~30% to optimize performance
v. 1.4.2 - neuter category updated
v. 1.5.0 - 2-step algorithm adopted (singular vs. plural), updated plural categories to increase gender recognition