finally finished it (I guess)

Answers/40230112113/AllinOne.java

@@ -0,0 +1,208 @@
+package t2;
+
+import java.util.Scanner;
+import java.util.Vector;
+
+/*to whoever is reading this
+ i'm using vector here because i knew how to use it in cpp
+ and vector is much better than normal String array
+ so i did a little searching in google(no it wasn't little. it felt like i could die midway)
+ and now here it is . vector in java :>*/
+
+public class AllinOne
+{
+    @SuppressWarnings("unchecked")
+    //it's just a recommendation of vscode
+    /* i also searched to see what this thing do.
+    it simply seems that java is much stricter than cpp
+    and i keep comparing them because i don't know any other programming language 
+    :> */
+    public static void main(String[] args)
+    {
+        Scanner sc=new Scanner(System.in);
+
+        System.out.println("Please enter your name");
+        String Firstname=sc.nextLine();
+        String Lastname=sc.nextLine();
+
+        System.out.println("Please enter your phone number");
+        String num=search();
+
+        System.out.println("Please enter your student ID");
+        String Id=seeifright();
+
+        System.out.println("Please write some of your interests");
+        Scanner scan = new Scanner(System.in);
+        Vector list =new Vector();
+        int a=1;
+        String interests;
+        String simplified="";
+        for (int i=0;i<10;i++)
+        {
+            System.out.println("write your word");
+            interests = sc.nextLine();
+
+            list.add(interests);
+            simplified= String.join(", ", list);
+
+            System.out.println("do you want to stop writing? (enter 0 to stop and 1 to continue)");
+            a=scan.nextInt();
+            if (a==0)
+                break;
+            else
+                continue;
+        }
+
+
+
+        //printing process
+        String str1=change(Firstname, Lastname);
+        String information="Hello! My name is " + str1 + ". My ID is " + Id + ". Here are some of my interests: \n" + simplified + ".\n You can reach me via my phone number " + num + ".";
+        menu(information);
+
+    }
+
+    public static String change(String s1 , String s2)
+    {
+        s1=s1.toLowerCase();
+        s2=s2.toLowerCase();
+
+        s1 = s1.substring(0, 1).toUpperCase() + s1.substring(1);
+        s2 = s2.substring(0, 1).toUpperCase() + s2.substring(1);
+
+        String s3=s1+" "+s2;
+
+        return s3;
+    }
+    public static String search()
+    {
+        Scanner sc = new Scanner(System.in);
+        String num=sc.nextLine();
+
+        if ((num.length()==11)&&((num.charAt(0)=='0')&&(num.charAt(1)=='9')))
+        {
+            return num;
+        }
+        else if ((num.length()==10)&&(num.charAt(0)=='9'))
+        {
+            num=0+num;
+        }
+        else
+        {
+            System.out.println("Wrong entry. Try again.");
+            num=search();
+        }
+        return num;
+    }
+    public static String seeifright()
+    {
+        Scanner sc = new Scanner(System.in);
+        String Id=sc.nextLine();
+
+        if ((Id.length()>=14)||(Id.length()<=3))
+        {
+            System.out.println("wrong student ID. please try again.");
+            Id=seeifright();
+        }
+        return Id;
+    }
+    public static void menu(String information)
+    {
+        Scanner scans= new Scanner(System.in);
+        System.out.println("****MENU****");
+        System.out.println("1-Encoded" + "\n" + "2-Decoded" + "\n" + "3-Exit");
+        int a=scans.nextInt();
+
+        if (a==3)
+            System.exit(0);
+
+        if (a==1)
+        {
+            System.out.println("now enter the amount of shift you want");
+            int shift=scans.nextInt();
+            char[] newerstr=Encoder(information , shift);
+            System.out.println(newerstr);
+            menu(information);
+        }
+        else if (a==2)
+        {
+            Decoder(information);
+            menu(information);
+        }
+    }
+
+    public static char[] Encoder(String str , int shift)
+    {
+        String[] newstr=str.split(" ");
+        char[] newerstr=new char[256];
+        int t=0;
+        for (int i=0;i<newstr.length;i++)
+        {
+            for (int j=0;j<newstr[i].length();j++)
+            {
+                int ascii=(int)newstr[i].charAt(j)+shift;
+                if ((newstr[i].charAt(j)>='A')&&(newstr[i].charAt(j)<='z'))
+                {
+                    if ((ascii>122))
+                    {
+                        for (int k=1;k<=shift;k++)
+                        {
+                            int z=1;
+                            int replacement=0;
+                            if (((int)newstr[i].charAt(j)+k)>=122)
+                            {
+                                replacement=97+z;
+                            }
+                            if (z+k==shift)
+                            {
+                                newerstr[t]=(char)replacement;
+                                t++;
+                                break;
+                            }
+                            else
+                                z++;
+                        }
+                    }
+                    else if((ascii>90)&&((newstr[i].charAt(j)>='A')&&(newstr[i].charAt(j)<='Z')))
+                    {
+                        for (int k=1;k<=shift;k++)
+                        {
+                            int z=1;
+                            int replacement=0;
+                            if (((int)newstr[i].charAt(j)+k)>=90)
+                            {
+                                replacement=65+z;
+                            }
+                            if (z+k==shift)
+                            {
+                                newerstr[t]=(char)replacement;
+                                t++;
+                                break;
+                            }
+                            else
+                                z++;
+                        }
+                    }
+                    else
+                    {
+                        newerstr[t]=(char)ascii;
+                        t++;
+                    }
+                }
+                else
+                {
+                    newerstr[t]=newstr[i].charAt(j);
+                    t++;
+                }
+            }
+            newerstr[t]=' ';
+            t++;
+        }
+        return newerstr;
+    }
+
+    public static void Decoder(String str)
+    {
+        System.out.println(str);
+    }
+}

Answers/40230112113/FullName.java

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+package t2;
+
+import java.util.Scanner;
+
+public class FullName
+{
+    public static void main(String[] args)
+    {
+        Scanner sc=new Scanner(System.in);
+        String Firstname=sc.nextLine();
+        String Lastname=sc.nextLine();
+        sc.close();
+        ;
+        System.out.println(change(Firstname, Lastname));
+    }
+    public static String change(String s1 , String s2)
+    {
+        s1=s1.toLowerCase();
+        s2=s2.toLowerCase();
+
+        s1 = s1.substring(0, 1).toUpperCase() + s1.substring(1);
+        s2 = s2.substring(0, 1).toUpperCase() + s2.substring(1);
+
+        String s3=s1+" "+s2;
+
+        return s3;
+    }
+}

Answers/40230112113/UserFullinformation.java

@@ -0,0 +1,100 @@
+package t2;
+
+import java.util.Scanner;
+
+public class UserFullinformation
+{
+    public static void main(String[] args)
+    {
+        Scanner sc=new Scanner(System.in);
+
+        System.out.println("Please enter your name");
+        String Firstname=sc.nextLine();
+        String Lastname=sc.nextLine();
+
+        System.out.println("Please enter your phone number");
+        String num=search();
+
+        System.out.println("Please enter your student ID");
+        String Id=seeifright();
+
+        System.out.println("Please write some of your interests");
+        Scanner scan = new Scanner(System.in);
+        String[] list = new String[10];
+        int a=1;
+        String interests;
+        for (int i=0;i<10;i++)
+        {
+            System.out.println("write your word");
+            interests = sc.nextLine();
+
+            list[i]=interests;
+
+            System.out.println("do you want to stop writing? (enter 0 to stop and 1 to continue)");
+            a=scan.nextInt();
+            if (a==0)
+                break;
+            else
+                continue;
+        }
+
+        //printing process
+        System.out.print("Hello! My name is " + change(Firstname, Lastname) + ".");
+        System.out.print("My ID is " + Id + ". Here are some of my interests: \n");
+        printit(list);
+        System.out.println("\n You can reach me via my phone number " + num + ".");
+    }
+    public static String change(String s1 , String s2)
+    {
+        s1=s1.toLowerCase();
+        s2=s2.toLowerCase();
+
+        s1 = s1.substring(0, 1).toUpperCase() + s1.substring(1);
+        s2 = s2.substring(0, 1).toUpperCase() + s2.substring(1);
+
+        String s3=s1+" "+s2;
+
+        return s3;
+    }
+    public static String search()
+    {
+        Scanner sc = new Scanner(System.in);
+        String num=sc.nextLine();
+
+        if ((num.length()==11)&&((num.charAt(0)=='0')&&(num.charAt(1)=='9')))
+        {
+            return num;
+        }
+        else if ((num.length()==10)&&(num.charAt(0)=='9'))
+        {
+            num=0+num;
+        }
+        else
+        {
+            System.out.println("Wrong entry. Try again.");
+            num=search();
+        }
+        return num;
+    }
+    public static String seeifright()
+    {
+        Scanner sc = new Scanner(System.in);
+        String Id=sc.nextLine();
+
+        if ((Id.length()>=14)||(Id.length()<=3))
+        {
+            System.out.println("wrong student ID. please try again.");
+            Id=seeifright();
+        }
+        return Id;
+    }
+    public static void printit(String[] list)
+    {
+        for (int i=0;i<10;i++)
+        {
+            if(list[i]==null)
+                break;
+            System.out.println(i+1 + ". " + list[i]);
+        }
+    }
+}

Answers/40230112113/getinterests.java

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+package t2;
+
+import java.util.Scanner;
+
+public class getinterests
+{
+    public static void main(String[] args)
+    {
+        Scanner sc = new Scanner(System.in);
+        Scanner scan = new Scanner(System.in);
+        String[] list = new String[10];
+        int a=1;
+        for (int i=0;i<10;i++)
+        {
+            System.out.println("write your word");
+            String interests = sc.nextLine();
+
+            list[i]=interests;
+
+            System.out.println("do you want to stop writing? (enter 0 to stop and 1 to continue)");
+            a=scan.nextInt();
+            if (a==0)
+                break;
+            else
+                continue;
+        }
+        boolean checking=true;
+        System.out.print("{");
+        for (int i=0;i<10;i++)
+        {
+            if(checking!=true)
+                System.out.print(",");
+            if(list[i]==null)
+            {
+                System.out.print("}");
+                break;
+            }
+            System.out.print("\""+list[i]+"\"");
+            checking=false;
+            if (list[i+1]==null)
+                checking=true;
+        }
+    }    
+}