Homework SourseJava Programming Ch 8 ex 5 a Write an application that accep
Java Programming: Ch 8 ex 5
a. Write an application that accepts up to 10 Strings, or fewer if the user enters
a terminating value. Divide the entered Strings into two lists—one for short
Strings that are 10 characters or fewer and the other for long Strings. After
data entry is complete, prompt the user to enter which type of String to display,
and then output the correct list. For this exercise, you can assume that if the
user does not request the list of short strings, the user wants the list of long
strings. If there are no Strings in a requested list, output an appropriate
message. Prompt the user continuously until a sentinel value is entered. Save
the file as CategorizeStrings.java.
b. Modify the CategorizeStrings application to divide the entered Strings into
those that contain no spaces, one space, or more. After data entry is complete,
continuously prompt the user to enter the type of String to display. If the user
does not enter one of the three valid choices, display all of the Strings. Save the
file as CategorizeStrings2.java.
Solution
1 . )
import java.util.Scanner; //scanner class to read data
public class CategorizeStrings //create class Sequence
{
public static void main(String []args) //define main method
{
Scanner sc=new Scanner(System.in);
String myStrings[]=new String[10]; //Array Declaration
String shortlist[]=new String[10]; //Array Declaration
String longlist[]=new String[10]; //Array Declaration
int i=0,sl=0,ll=0;
while(i<10) //loop for prompting & reading 10 strings
{
System.out.println(\"1 - Enter String \\t 2- Exit \ \");
int choice =sc.nextInt(); //read choice 1 for enter string and 2 for exit
if(choice==1)
{
System.out.println(\"Enter String\" +(i+1));
myStrings[i]=sc.next(); //read string
if(myStrings[i].length()<=10) //if string length is lessthan 10 it stored in shortlist otherwise it is in longlist
{
shortlist[sl]=myStrings[i];
sl++;
}
else
{
longlist[ll]=myStrings[i];
ll++;
}
//System.out.println(myStrings[i]);
}
else
{
break;
}
i++;
}
//loop to dispaly output 1-dispalys shot list and 2- for long list ,3- for exit
while(true)
{
System.out.println(\"1 - List Out Short Strings \\t 2 - List Out Long Strings \\t 3- Exit\" );
int val=sc.nextInt(); //read choice value
//if else ladder for display short or long list based on choice
if(val==1)
{
for(int x=0;x<sl;x++)
System.out.println(shortlist[x]); //display shortlist
}
else if(val==2)
{
for(int x=0;x<ll;x++)
System.out.println(longlist[x]); //dispaly longlist
}
else if (val==3)
{
break;
}
else
{
}
}
}
}
Output :
1 - Enter String 2- Exit
1
Enter String0
adsfsdfsdgfgfdgfdgfd
1 - Enter String 2- Exit
1
Enter String1
dasd
1 - Enter String 2- Exit
1
Enter String2
sdfdsfds
1 - Enter String 2- Exit
1
Enter String3
sdfsdddddddddddddddddddddddddddddddddd
1 - Enter String 2- Exit
1
Enter String4
dsf
1 - List Out Short Strings 2 - List Out Long Strings 3- Exit
1
dasd
sdfdsfds
dsf
1 - List Out Short Strings 2 - List Out Long Strings 3- Exit
2
adsfsdfsdgfgfdgfdgfd
sdfsdddddddddddddddddddddddddddddddddd
1 - List Out Short Strings 2 - List Out Long Strings 3- Exit
3
2 )
//Java Programme CategorizeStrings2.java.
import java.util.Scanner; //scanner class to read data
public class CategorizeStrings2 //create class Sequence
{
//Method to return number of white spaces
static int spacecount(String s)
{
int c=0;
for(int i=0;i<s.length();i++)
{
char ch=s.charAt(i);
if(ch==\' \')
c++;
}
return c;
}
public static void main(String []args) //define main method
{
CategorizeStrings2 ob=new CategorizeStrings2();
Scanner sc=new Scanner(System.in);
String myStrings[]=new String[10]; //Array Declaration
String zerolist[]=new String[10]; //Array Declaration
String onelist[]=new String[10]; //Array Declaration
String morelist[]=new String[10]; //Array Declaration
int i=0,zl=0,ol=0,ml=0;
while(i<10) //loop for prompting & reading 10 strings
{
System.out.println(\"1 - Enter String \\t 2- Exit \ \");
int choice =sc.nextInt(); //read choice 1 for enter string and 2 for exit
if(choice==1)
{
System.out.println(\"Enter String\" +i);
myStrings[i]=sc.next(); //read string
int res=ob.spacecount(myStrings[i]);
if(res==0) //if string length is lessthan 10 it stored in shortlist otherwise it is in longlist
{
zerolist[zl]=myStrings[i];
zl++;
}
else if(res==1)
{
onelist[ol]=myStrings[i];
ol++;
}
else
{
morelist[ml]=myStrings[i];
ml++;
}
//System.out.println(myStrings[i]);
}
else
{
break;
}
i++;
}
//loop to dispaly output 1-dispalys shot list and 2- for long list ,3- for exit
while(true)
{
System.out.println(\"1 - List Out Zero Space Strings \\t 2 - List Out One space Strings \\t 3 - List Out More spaces Strings\\t 4- Exit\" );
int val=sc.nextInt(); //read choice value
//if else ladder for display short or long list based on choice
if(val==1)
{
for(int x=0;x<zl;x++)
System.out.println(zerolist[x]); //display zerolist
}
else if(val==2)
{
for(int x=0;x<ol;x++)
System.out.println(onelist[x]); //dispaly onelist
}
else if (val==3)
{
for(int x=0;x<ml;x++)
System.out.println(morelist[x]); //dispaly morelist
}
else if(val==4)
{
break;
}
else
{}
}
}
}
