Closure Properties of Regular Languages -Automata

Closure Properties of Regular Languages We use the term “Closure” when we talk about sets of things. If we have two regular languages L1 and L2, and L is obtained by applying certain operations on L1, L2 then L is also regular. Consider an Example: Let us take a set...

Automata Regular Expressions

Regular Expressions Regular expressions are also referred as rational expressions, which are used to describe the algebraic description of regular languages. It is generally a sequence of characters that is used to find a string in language. Regular expressions play...

Pumping Lemma for Regular Languages – Automata

Pumping Lemma for Regular Languages The language accepted by the finite automata is called Regular Language. If we are given a language L and asked whether it is regular or not? So, to prove a given Language L is not regular we use a method called Pumping Lemma. The...

Derivation Tree of Context Free Grammar – Automata

Derivation Tree of Context Free Grammar Derivation tree gives a way to show how a string can be derived from context free grammar. It is also called as parse tree, production tree, and syntax tree. The interior nodes of derivation tree are labeled with variables and...

Simplification of Context Free Grammar – Automata

Simplification of Context Free Grammar Context Free Grammar has recursive structure. The languages that are accepted with Context Free Grammar are called Context Free Languages. Context Free Grammar has one condition for production rules, i.e., on the left-hand side...

Context Free Grammar – Automata

Context Free Grammar Grammar defines a set of rules, and with the help of these rules valid sentences in a language are constructed. A grammar consists of collection of substitution rules, which are also called production rules. Context Free Grammar have recursive...

Ambiguity in Context Free Grammar – Automata

Ambiguity in Context Free Grammar? Context Free Grammar Context Free Grammar has one condition for production rules, which is, on the left-hand side of each rule, there must be only single variable, and on the right-hand side there may be a combination of variables...

Chomsky’s Normal Form – Automata

Chomsky’s Normal Form (CNF) In context free grammar, the left-hand side of production rules contains only one variable, and right side may contain any number of variables or terminals in production rule. The production rules in context free grammar are in the...

Introduction to Blue Ocean- Jenkins

Blue Ocean: Jenkins Blue Ocean is created on the basis of the user’s Jenkins experience. It is mainly designed for the pipeline process, but it can also perform freestyle jobs. Blue Ocean reduces the disorder and chaos caused by the Jenkins and also increases the...

Jenkins Pipeline

The Jenkins Pipeline The Jenkins pipeline is a collection of codes written in a Jenkins file, allows the Jenkins to operate in a sequence. It provides a platform to run each job simultaneously. The pipeline enables the workflow of the jobs by using the pipeline...

Conversion from Mealy Machine to Moore Machine

Conversion from Mealy Machine to Moore Machine In this topic, we will see different ways that are used for the conversion of Mealy Machine to Moore Machine. Moore Machine The output of Moore machine depends only on the present state of the machine. In Moore Machine,...

Pumping Lemma for Context Free Languages

Pumping Lemma for Context Free Languages The Pumping Lemma is made up of two words, in which, the word pumping is used to generate many input strings by pushing the symbol in input string one after another, and the word Lemma is used as intermediate theorem in a...

Conversion of DFA to Regular expression

Conversion of DFA to Regular expression To convert the DFA to Regular Expression (RE), we are going to use a method called converting DFA to regular expression by eliminating states. This method is used to obtain Regular Expression from the given DFA. Algorithm The...

Automata Greibach Normal Form

Greibach Normal Form In Greibach Normal Form, there is restriction on the position, in which, terminals and variables can appear on right-hand side of production rules. In Greibach Normal Form, every production must start with a single terminal followed by any number...

Inheritance in Python

Inheritance in Python Object-Oriented Programming provides reusable patterns to the code for restricting the redundancy in development projects. One of the basic principles of Object-Oriented Programming that helps achieve recyclable code is Inheritance, where one...

Three-Address Code

Three-Address Code If there is at most one operator on the right side of the instruction, then the instruction will be the three-address code so that no arithmetic expressions are permitted. It is a kind of intermediate code that can be easily generated and converted...

Target Machine

Target Machine A target machine is a byte-addressable machine. This machine has n general-purpose registers, R0, R1,…..Rn-1. A Simple Target Machine Model has three-address instruction. A full-edged assembly language would have a variety of instructions. The...

LEX

LEX Lex is a tool/computer program that generates a Lexical analyzer. Lex is developed by Vern Paxson in C around 1987. Lex works together with the YACC parser generator. It allows us to identify a Lexical analyzer by specifying regular expressions to describe...

Run-Time Storage Management

Run-Time Storage Management Every executing program has its own logical address space. Logical address space is partitioned into: Code: It is responsible for storing the executable target code. Static: It is used to holdglobal constant and compiler generate data....

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