1. Write a statement that declares a reference to an array of int's. The ...

AITay Worksheet/12
1. Write a statement that declares a reference to an array of int’s. The array reference should be named
numbers.
2, Write a statement that declares and constructs an array of Rectangle’s named boxes so that the array(~c4~.C.~l~, r .~¢
stores exactly I0 Rectangle objects. ~C.-~c~\e ~ I ~0/~ ~ t’3ecx_~
3. Write a SINGLE statement that declares a reference to an array named grades that stores five
double’s. In the same statement, initialize the array to the values 44, 55, 66, 77, and 88.
4. Write a statement that assigns the value 13 to the fifth ~osition of the a~ay nun~e~s.
’
5. Write a statement that displays the value stored in the third position of the a~ay n~bers.
6. Write a statement that displays the number ~felem~nts in the array na~ed n~mber s.
7. Writ~ a ~IN~L~ statement that stores the value 99 into the last position of an array named g~ades no
matter how many elements it has,
8. Write a fo~ loop that assigns the integer values 1 through I0 to the first ten positions of an an’ay named
sco~es. You can assume that the array scores has already been declared and constructed to have 10
elements. ~(Vq< i =O) } ~ ~O’j i~+ )
9. Write a statement that declares a constructs a two-dimensional array of int’s named aportsScores
that has exactly 5 rows and 4 columns.
10. Write a statement that assigns the value 13 to the element in the third row and the second column of the
two-dimensional array named sportsScorea.
Complete the following exercises on the back of this worksheet.
t I, Write a static method named findPosition that accepts two parameters, an int named key and an
array of ±nt’s named mykrray. The method must return the subscript position within myArray in which
key is fbund. If key is not stored in mykrray, return the value
12. Write a code segment that uses a for loop and an ±f statement to determine whether the value 13 is
stored in a previously declared two-dimensional array named sportsScores. If the value 13 is stored in
the array, then store the value true in a boolean flag variable named found. Otherwise, store false in
found. The array sports$cores has 4 columns and 5 rows.

From: Alden Hsu
To: Nancy Ricca ¯ ~ i ~.."
Date: 11/6/2012.2:38 PM
Subject: Array Worksheet 2 #12
int sportsScores[][] = new int[5][4];
boolean found = false;
for(int i = O;i < 5; i++)
{
for (intj = O;j < 4; j++)
if(sportsScores[i][j] == 13)
found = true;
}
System. out. pri nt(found);

Java " Nam’e -
ArrayLis! worksheet #2
1. Write a statement that only declares a reference to an krray5ist named nurabers.
2, Write a statement that declares and constructs an Ar rayList named boxes,
3. Write a statement that adds a Rectangle object reference named rayRect to boxes.
4.Write a statement that replaces the fifxh position n~ers with the value 5.
5.Write a statement that displays the stored in the third position of n~ers.
6,Write a s~tement that displays the number of elements in n~Bers.
7, Write a S~GLE statement that stores the value 99 into the last position of n~ers no roarer how large it is. Whatever w~
stored in the last position should be overwriRen.
8. Write a single statement that insets the string "~o" into the fiRh position of oh a~ay list of strings named schools. You can
assume that schooZs h~ a flRh position,
I’ 2
9. Assuming boxes stores Rectangle objects, write a single statement that declares a Rectangle object named rayBox and
initializes it to the Rectangle object that is stored in the fourth position of boxes.
I0, Write a single stmement thN removes the ve~ first element of an array list named stuff,
Write the following methods on lined paper and staple the lined paper to this worksheet
1 1. Write a static method named findPosition that accepts two parameters, an int narned keyValue and an array list of
Integer’s named myArray. The method must return the first subscript position within myArray in which keyVaiue is
found. If keyValue is not stored in rayArray, return the value
12, Write a static method named countMales that accepts an an:ay list parameter named myList that contains strings. The
method must count up and return the number of times that the string "male" is found in mySist,
13, Write a static method named parseIntoArrayList that accepts two parameters, a string named input and an array list
of strlngs named result. The method must break input up into individual letters, store each letter into a substring, and store
each letter substring in the next position of result.
14. Write a void, static method named removeZeros that is passed an ArrayList parameter named myList.
The method must remove all values of 0.
15. Write a static method named countLetters that is passed an array list parameter named myLi st that contains String
object references. The method must count up and return the number of characters (letters, digits, blank spaces, etc.) in all of the
strings ofrayList,

2
3
4
~ < [] scores = {99, 88, 77, i01, 81};
6
?
8
9i0
f

From: Alexander Volynsky
To: Nancy Ricca
Date: 11/6/2Q122:24 PM
Subject: Problem #13
public static void parselntoArrayList (String input, ArrayList result)
}
String test = input;
for (inti = 0;i

From: Jake Housley
To: Nancy Ri¢ca
Date: 11/7/2012~2:36 PM
Subject:
public static void removeZeros0
for(int x=0; x

From: Brendan Freiler
To: Nancy Ricca
Date: 11/6/20122:10 PM
Subject: public static int countLetters(ArrayList myList)
public static int countLetters(ArrayList myList)
int count = O;
for (String s: myList)
{ count+= s.length();
return count;

-(.~ ",
Java
ArrayLi:st Worr_kshee..t_#,l
Name -
Tr~ethecodeanddrawtheresulting ArrayList’sorexplainanye~orsth~tyou find.
I.
ArrayList shoppingCart = new ArrayList();
String box = "Wheaties";
shoppingCart.add~box);
shoppingCart.add("bananas");
shoppingCart.add("crackers");
String jar =
shoppingCart.set(l, jar);
String snack = ~Fritos";
shoppingCart.add(2, snack);
shoppingCart.remove(0);
String dairy = "milk";
shoppingCart.set(l, dairy)
ArrayList listl = new ArrayList()
for (int i = I; i