Lab11

4th Sem (Design and Analysis of algorithm)/lab1_student.java

@@ -0,0 +1,43 @@
+import java.util.Scanner;
+public class Student
+{
+private String usn, name, branch, phone;
+public Student(String usn, String name, String branch, String phone)
+{
+super();
+this.usn = usn;
+this.name = name;
+this.branch = branch;
+this.phone = phone;
+}
+@Override
+public String toString()
+{
+return "Student [USN = " + usn + ", NAME = " + name + ", BRANCH = " + branch
++ ", PHONE NUMBER = " + phone + "]";
+}
+public static void main(String args[])
+{
+int i;
+String usn, branch, name, phone;
+Scanner s = new Scanner(System.in);
+System.out.println("Enter number of Students: ");
+int n = s.nextInt();
+Student[] students = new Student[n + 1];
+for(i = 1; i<= n; i ++)
+{
+System.out.println("Enter student "+ i +" details\n");
+  System.out.println("Give Student Details USN, Name, Branch, Phone Number");
+usn = s.next();
+name = s.next();
+branch = s.next();
+phone = s.next();
+students[i] = new Student(usn, name, branch, phone);
+}
+System.out.println("DATABASE:");
+for(i = 1; i <= n; i ++)
+{
+System.out.println(students[i]);
+}
+}
+}

4th Sem (Design and Analysis of algorithm)/lab1b_stacks.java

@@ -0,0 +1,60 @@
+import java.util.Scanner;
+public class StackDemo
+{
+public static void main(String[] args)
+{
+int top = -1;
+int n,element,i;
+int[] a;
+Scanner s = new Scanner(System.in);
+System.out.println("Enter Stack Size");
+n = s.nextInt();
+a = new int[n+1];
+System.out.println("Stack operations are" +"\t"+ "1.Push"+"\t"+ "2.POP"+"\t"+
+"3.Display"+"\t"+ "4.Exit");
+for(;;)
+{
+System.out.println("Enter your choice");
+int choice = s.nextInt();
+switch(choice)
+{
+case 1: if(top == n-1)
+{
+System.out.println("Stack overflow");
+}
+else
+{
+System.out.println("Enter element to be pushed");
+element = s.nextInt();
+a[top++] = element;
+}
+break;
+case 2: if(top == -1)
+{
+System.out.println("Stack Underflow");
+}
+else
+
+  {
+System.out.println("Popped element " + a[top--]);
+}
+break;
+case 3: if(top== -1)
+{
+System.out.println("Stack Empty");
+}
+else
+{
+System.out.println("Elements in stack :");
+for ( i = top; i >= 0; i--)
+{
+System.out.println(a[i]);
+}
+}
+break;
+case 4: System.exit(0);
+break;
+}
+}
+}
+}

4th Sem (Design and Analysis of algorithm)/lab2a.java

@@ -0,0 +1,174 @@
+import java.util.Scanner;
+class Staff
+{
+protected String staffId, name, ph;
+protected float salary;
+public Staff(String staffId, String name, float salary2, String ph)
+{
+super();
+this.staffId = staffId;
+this.name = name;
+this.salary = salary2;
+this.ph = ph;
+}
+@Override
+public String toString()
+{
+return "Staff [staffId=" + staffId + ", name=" + name + ", salary="
++ salary + ", ph=" + ph + "]";
+}
+}
+class Teaching extends Staff
+{
+private String domian, publication;
+public Teaching(String staffId, String name, float salary, String ph,
+String domian, String publication)
+{
+super(staffId, name, salary, ph);
+this.domian = domian;
+this.publication = publication;
+}
+@Override
+public String toString()
+{
+return "Teaching [domian=" + domian + ", publication=" + publication
++ ", staffId=" + staffId + ", name=" + name + ", ph=" + ph
++ ", salary=" + salary + "]";
+}
+}
+class Technical extends Staff
+{
+private String skills;
+public Technical(String staffId, String name, float salary, String ph,
+String skills)
+{
+super(staffId, name, salary, ph);
+this.skills = skills;
+}
+@Override
+public String toString()
+{
+return "Technical [skills=" + skills + ", staffId=" + staffId
++ ", name=" + name + ", ph=" + ph + ", salary=" + salary + "]";
+}
+}
+class Contract extends Staff
+{
+private String period;
+public Contract(String staffId, String name, float salary, String ph,
+String period)
+{
+super(staffId, name, salary, ph);
+this.period = period;
+}
+@Override
+public String toString()
+{
+return "Contract [period=" + period + ", staffId=" + staffId
++ ", name=" + name + ", ph=" + ph + ", salary=" + salary + "]";
+}
+}
+public class StaffDemo
+{
+public static void main(String[] args)
+{
+int i,choice;
+String staffId, name, ph, domain, publication, skills, period;
+float salary;
+int teachingCount=0, technicalCount=0, contractCount=0;
+Teaching[] teachingStaff = new Teaching[10];
+Contract[] contractStaff = new Contract[10];
+Technical[] technicalStaff = new Technical[10];
+Scanner s = new Scanner(System.in);
+System.out.println("1 Teaching Staff Entry");
+System.out.println("2 Technical Staff Entry");
+System.out.println("3 Contract Staff Entry");
+System.out.println("4 Teaching Staff Details");
+System.out.println("5 Technical Staff Details");
+System.out.println("6 Contract Staff Details");
+System.out.println("7.Exit");
+for(;;)
+{
+System.out.println("enter your choice");
+choice = s.nextInt();
+switch(choice)
+{
+case 1: System.out.println("Enter Teaching
+Details(StaffId,Name,Salary,PhoneNumber,Domain,Publication)");
+staffId = s.next();
+name = s.next();
+salary = s.nextFloat();
+ph = s.next();
+domain = s.next();
+publication = s.next();
+teachingStaff[teachingCount]= new
+Teaching(staffId,name,salary,ph,domain,publication);
+teachingCount++;
+break;
+case 2: System.out.println("Enter Technical
+staffDetails(StaffId,Name,Salary,PhoneNumber,Skills)");
+                           staffId = s.next();
+name = s.next();
+salary = s.nextFloat();
+ph = s.next();
+skills = s.next();
+technicalStaff[technicalCount] = new
+Technical(staffId,name,salary,ph,skills);
+technicalCount++;
+break;
+case 3: System.out.println("enter Contract staff
+details(StaffId,Name,Salary,PhoneNumber,Period)");
+staffId = s.next();
+name = s.next();
+salary = s.nextFloat();
+ph = s.next();
+period = s.next();
+contractStaff[contractCount] = new Contract(staffId,name,salary,
+ph ,period);
+contractCount++;
+break;
+case 4: System.out.println("Teaching Staff Details");
+if(teachingCount==0)
+{
+System.out.println("No teaching staff details
+available");
+}
+else
+{
+for(i=0;i<teachingCount;i++)
+{
+System.out.println(teachingStaff[i]);
+}
+}
+break;
+case 5: System.out.println("Technical Staff Details:");
+if(technicalCount==0)
+{
+System.out.println("No technical staff details available");
+}
+else
+{
+for(i=0;i<technicalCount;i++)
+  {
+System.out.println(technicalStaff[i]);
+}
+}
+break;
+case 6: System.out.println("contract Staff Details:");
+if(contractCount==0)
+{
+System.out.println("No contract staff details available");
+}
+else
+{
+for(i=0;i<contractCount;i++)
+{
+System.out.println(contractStaff[i]);
+}
+}
+break;
+case 7: System.exit(0);
+}
+}
+}
+}

4th Sem (Design and Analysis of algorithm)/lab2b.java

@@ -0,0 +1,43 @@
+import java.util.Scanner;
+import java.util.StringTokenizer;
+class Customer
+{
+private String customerName,date;
+public Customer(String customerName, String date)
+{
+super();
+this.customerName = customerName;
+this.date = date;
+}
+@Override
+public String toString()
+{
+String returnValue = customerName+",";
+StringTokenizer tokenizer = new StringTokenizer(date,"/");
+System.out.println("The Customer details are ");
+while(tokenizer.hasMoreTokens())
+{
+returnValue = returnValue+tokenizer.nextToken();
+if(tokenizer.hasMoreElements())
+{
+returnValue = returnValue+",";
+}
+}
+return returnValue;
+}
+}
+public class CustomerDetails
+{
+public static void main(String[] args)
+{
+String customerName;
+  String date;
+Scanner scanner = new Scanner(System.in);
+System.out.println("Enter customer name");
+customerName = scanner.next();
+System.out.println("Enter Date (dd/mm/yyy)");
+date = scanner.next();
+Customer customer = new Customer(customerName,date);
+System.out.println(customer.toString());
+}
+}

6th sem (File Structure)/lab1.cpp

@@ -0,0 +1,55 @@
+#include<iostream>
+#include<fstream>
+#include<string>
+using namespace std;
+int main()
+{
+char buf[20][20],infile[20],outfile[20],buf1[20];
+char line[200];
+int i,j,indx,x,y,ch;
+fstream file,file1;
+cout<<"Enter your choice\n1->file I/O\n2->standard I/O";
+cin>>ch;
+switch(ch)
+{
+case 1:{ cout<<"Enter the input file:"<<flush;
+cin>>infile;
+cout<<"Enter the output file:"<<flush;
+cin>>outfile;
+file.open(infile,ios::in);
+file.unsetf(ios::skipws);
+file1.open(outfile,ios::out);
+while(1)
+{
+file.getline(line,200,'\n');
+if(file.fail())
+break;
+else
+{
+} }
+file.close();
+for(i=strlen(line);i>=0;i--)
+file1<<line[i];
+file1<<"\n";
+file1.close();
+}
+break;
+case 2:{ cout<<"Enter the sequence of names or '0' to exit";
+indx=0;
+while(1)
+{
+cin>>buf[indx];
+if(strcmp(buf[indx],"0")==0) break;
+indx++;
+}
+for(i=0;i<indx;i++)
+{
+for(j=strlen(buf[i]);j>=0;j--)
+cout<<buf[i][j];
+cout<<endl;
+}
+}
+break;
+}
+return 0;
+}