LR Parser (LR(0), SLR(1), CLR(1) and LALR(1))

(LR Parser)[https://en.wikipedia.org/wiki/LR_parser] are buttom-up parser for reading grammar. There are different kinds of LR Parser which some of them are: SLR parsers, LALR parsers, Canonical LR(1) parsers ,Minimal LR(1) parsers, GLR parsers. I implemented these parser algorithm using java