Lab01, Lab02, Lab03 u15/fns/csc/039

Lab1.java

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+*
+*
+*
+*
+*
+
+*  *
+*  *  *
+*  *
+*  *  *
+*  *
+
+*  *
+*  *  *
+*  *
+*  *  *
+*  *
+
+*	*
+*	*
+*	*
+*	*
+  *   *  
+
+  	1	2	3	4
+
+1	1	2	3	4
+
+2	2	4	6	16
+
+3	3	6	9	12
+
+4	4	8	12	16
+

Lab2.java

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+
+/**
+ * Write a descri
+ * ption of class Lab2 here.
+ * 
+ * @author (U15/FNS/CSC/014) ()ry*+=
+ */
+import java.util.Random;
+public class Lab2
+{
+  public static void main(String[]args){
+      double miles=10.5;
+       miles=10.5;
+        miles++;
+         System.out.println("\nEXERCISES 01a MILES");
+          System.out.println("The correct value of miles is now: "+miles+"\n");   
+System.out.println("\bEXERCISES 01b COMPUTE XYZ");    
+  double x,y,z;
+   int a= 1; double d= 1.0;
+    x= d+43%5*(23*3%2);
+     y= 1.5*3+(++a);
+      z= 3+d*d+4;
+       System.out.println("The value of x: "+x);
+        System.out.println("The value of y: "+y);
+         System.out.println("The value of z: "+z);        
+System.out.println("\nEXERCISES 01c R= Math.log(P) ");
+    double R,P;
+       P=3.758;
+        R= Math.log(P);
+          System.out.println("The solution = "+R);
+System.out.println("\nEXERCISES 02 MATHFUNCTION");
+    double k;
+        k=2/4*4%3;
+         //converting from degrees to radian
+            double cos=Math.cos(Math.toRadians(30)); 
+             double sin=Math.sin(Math.toRadians(30));
+              double tan=Math.tan(Math.toRadians(30));
+               System.out.println("The value of cos 30: "+cos);
+                System.out.println("The value of exp(15): "+Math.exp(15));
+                 System.out.println("The value of sin 30: "+sin);
+                  System.out.println("The absolute value of k is "+Math.abs(k));
+                   System.out.println("The value of tan 30: "+tan);
+System.out.println("\nEXERCISES 03 USERNAME&DOMAIN");
+    String email,domain,username;
+     email = "Phoenixkheeng@gmail.com";
+     username = email.split("@")[0];
+       domain = email.substring(email.indexOf("@")+1);
+        //username = email.substring(email.indexOf("@")-1);
+         System.out.println("The email address==> Phoenixkheeng@gmail.com");			
+          System.out.println("Username:"+ username); 
+           System.out.println("Domain:"+ domain);
+System.out.println("\nEXERCISES 04 FILENAME&EXTENSION");
+    String path;
+        path = "d:phoenixkheeng/work/lab2.java";
+		  int index=path.lastIndexOf("/");
+		   int ext=path.lastIndexOf(".");
+		    String fileName=path.substring(index+1, ext);
+			 String filePath=path.substring(0, index);
+			  String fileExt=path.substring(ext+1);
+			   System.out.println("This is the path entered ==> d:phoenixkheeng/work/lab2.java");
+			    System.out.println("The Fullname: "+path);
+				 System.out.println(" The Directory: "+filePath+" \n The Filename: "+fileName+" \n The Extension: "+fileExt);		
+System.out.println("\nEXERCISES 05 PASSWORD GENERATOR");
+    String firstName = "abdullah";
+     String middleName = "muhammed";
+      String lastName = "abdullahi";
+       Random rand = new Random();
+        for(int icount=0;icount<10;icount++){
+         int randomNumber = rand.nextInt(100);
+        }
+        int age = 20;
+        // int zaa = age+randomNumber;
+          //extract initials
+           String initials =
+            firstName.substring(0,1)+
+             middleName.substring(0,1)+
+              lastName.substring(3,4);
+              //append age
+               String password =(initials.toLowerCase());
+               //password+randomNumber;
+                System.out.println("Your Password = "+password);
+
+    }   
+}

Lab3.java

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+
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+import java.util.Scanner;
+public class Lab3
+{
+    public static void main(String[]arg){
+System.out.println("\nEXERCISES 01 Volume&Surface-area");
+Scanner scann  = new Scanner(System.in);
+System.out.println("Enter the length:");
+double l = scann.nextDouble();
+System.out.println("Enter the width:");
+double w = scann.nextDouble();
+System.out.println("Enter the heigth:");
+double h = scann.nextDouble();
+double volume = (h*w*l);
+double surface = 2*(l*w+l*h+w*h);
+System.out.println("The volume of the box: "+volume);
+System.out.println("The surface area of the box: "+surface);
+System.out.println("\nEXERCISES 02 USERNAME&DOMAIN");
+    Scanner scan  = new Scanner(System.in);
+     String domain,username;
+      System.out.println("Please enter a valid email address");
+       String email = scan.nextLine();   
+        username = email.split("@")[0];
+         domain = email.substring(email.indexOf("@")+1);
+         //username = email.substring(email.indexOf("@")-1);         
+          System.out.println("\nUsername:"+ username); 
+           System.out.println("Domain:"+ domain);
+
+System.out.println("\nEXERCISES 03 Perimeter&Area");
+    Scanner scan1  = new Scanner(System.in);
+    System.out.println("Enter the 1st sides:");
+    int a = scan1.nextInt();
+    System.out.println("Enter the 2nd sides:");
+    int b = scan1.nextInt();
+    System.out.println("Enter the 3rd sides:");
+    int c = scan1.nextInt();
+    double s =(a+b+c)/2;
+    double area = Math.sqrt(s*(s-a)*(s-b)*(s-c)); 
+    System.out.println("The Perimeter of triangle is: "+s);
+    System.out.println("The area of the triangle with the input sides is "+ area+"unit square");
+    if(a>b && a>c){
+    System.out.println("The longest side is: "+a);
+    }else if(b>c){
+    System.out.println("The longest side is: "+b);
+    }else{
+    System.out.println("The longest side is: "+c);
+    }
+
+    if(a<b && a<c){
+    System.out.println("The smallest side is: "+a);
+    }else if(b<c){
+    System.out.println("The smallest side is: "+b);
+    }else{
+    System.out.println("The smallest side is: "+c);
+    }
+
+}
+}