C program for implementing the functionalities of predictive parser
LOGIC:Read the input string.By using the FIRST AND FOLLOW values.Verify the FIRST of non terminal and insert the production in the FIRST valueIf we have any @ terms in FIRST…
Implement the lexical analyzer using JLex, flex or other lexical analyzer generating tools
LOGIC: Read the input string. Check whether the string is identifier/ keyword /symbol by using the rules of identifier and keywords using LEX ToolPROCEDURE: Go to terminal .Open vi editor ,Lex lex.l ,…
C program to test whether a given identifier is valid or not
#include #include #include void main() { char a[10]; int flag, i=1; clrscr(); printf("n Enter an identifier:"); gets(a); if(isalpha(a[0])) flag=1; else printf("n Not a valid identifier"); while(a[i]!='') { if(!isdigit(a[i])&&!isalpha(a[i])) { flag=0;…
C program to recognize strings under ‘a*’, ‘a*b+’, ‘abb’
LOGIC:By using transition diagram we verify input of the state.If the state recognize the given pattern rule.Then print string is accepted under a*/ a*b+/ abb.Else print string not accepted. #include…
C program to Design a lexical analyzer for given language
LOGIC: 1. Read the input Expression 2. Check whether input is alphabet or digits then store it as identifier 3. If the input is is operator store it as symbol 4. Check the input…
java program for congestion control using leaky bucket algorithm
The main concept of the leaky bucket algorithm is that the output data flow remains constant despite the variant input traffic, such as the water flow in a bucket with…
Java program for simple RSA algorithm to encrypt and decrypt the data
The RSA algorithm can be used for both public key encryption and digital signatures. Its security is based on the difficulty of factoring large integers.The RSA algorithm’s efficiency requires a…
Java program on datagram socket for client/server to display the message on client side, typed at the server side
import java.util.*; import java.net.*; import java.io.*; public class udpserver { public static void main(String args[]) { DatagramSocket aSocket=null; Scanner scan=new Scanner(System.in); int ServerPort=999; System.out.println("Server ready n Waiting for connectionn"); try…
Using TCP/IP sockets, write a client-server java program to make the client send the file name and to make the server send back the contents of the requested file if present and Implement the above program using as message queues or FIFOs as IPC channels
import java.util.*; import java.net.*; import java.io.*; public class tcpserver { public static void main(String[] args) { try { ServerSocket s=new ServerSocket(998); System.out.println("Server Readynwaiting for connection ....."); Socket s1=s.accept(); DataOutputStream dos=…
Java program to find the shortest path between vertices using bellman-ford algorithm
Distance Vector Algorithm is a decentralized routing algorithm that requires that each router simply inform its neighbors of its routing table. For each network path, the receiving routers pick the…
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