Write a method named removeSpaces. The method receives a String and returns a String. The method returns a String that has all of the received Strings whitespace characters removed. The returned String has all of the same characters as the received string except for all whitespace characters. The returned String has all characters (except whitespace) in the same order as they were in the received String. If the received String is all whitespace characters then the method returns an EMPTY String.

method signature: public static String removeSpaces(String word)

Example values:

removeSpaces(Hi There! ) should return HiThere!

removeSpaces( whats up ??) should return whatsup??

removeSpaces( YYYY \t\t YYY ) should return YYYYYYY

removeSpaces(" ") should return ""

Write a method named toCelsius, the method receives a double, temperature in Fahrenheit, returns the equivalent temperature in Celsius. (Look up a conversion formula, be sure that you use double type values in your formula).

method signature: public static double toCelsius(double temperature)

Example values:

toCelsius(212.0) should return 100.0

toCelsius(32.0) should return 0.0

toCelsius(100.0) should return 37.77777

toCelsius(-100.0)should return -73.333333334

Write a method named getLetterGrade. The method receives a grade average (double) returns the corresponding letter grade - use 90.0,80.0,70.0, 60.0 as cutoffs for A, B, C, D, F. Any grade average received that is below 0.0 or over 105.0 return 'X'

method signature: public static char getLetterGrade(double gradeAvg)

Example values:

getLetterGrade(90.0) should return 'A'

getLetterGrade(85.2) should return 'B'

getLetterGrade(69.9) should return 'D'

getLetterGrade(78.33) should return 'C'

getLetterGrade(110.0) should return 'X'

getLetterGrade(104.3) should return 'A'

Write a method, getFirstLast, the method receives a String and returns a String containing the first and last characters in the received string ignoring leading/trailing spaces.

method signature: public static String getFirstLast(String aString)

Example values:

getFirstLast("Hi There!") should return "H!"

getFirstLast("Seu") should return "Su"

getFirstLast("Q") should return "Q" // note that 1 letter is both first and last

getFirstLast(" A CDG jk B ") should return "AB" so remove leading/trailing spaces

getFirstLast(" ") should return "" //

getFirstLast("") should return "" // empty string should return empty string

Write a method doubleChars, that returns a String containing all chars in the received String appearing two times in the returned String.

method signature: public static String doubleChars(String str)

doubleChars("The") returns "TThhee"

doubleChars("AAbb") returns "AAAAbbbb"

doubleChars("Hi-There") returns "HHii--TThheerree"

doubleChars("") returns ""

doubleChars(" ") returns " "

Write a method mixIt, that receives 2 strings and returns a string containing the first char of string1, the first char of string2, the second character of string1, the second character of string2 etc. Any leftover chars go at the end of the returned string

method signature: public static String mixIt(String str1, String str2)

mixIt("abc", "xyz")returns "axbycz"

mixIt("Hi", "There") returns "HTihere"

mixIt("xxxx", "There")returns "xTxhxexre"

Write a method, computeTicketCode, that receives a vehicle's speed(int) detected by radar camera , and a boolean(isSchoolZone). Return appropriate code depending on received values as described below:

method signature: public static int computeTicketCode(int speed, boolean isSchoolZone)

When NOT in a school zone: (false value received for isSchoolZone)

speed code

0-30 0

31-59 1

60-75 2

75+ 3

When IN a school zone (true value received for isSchoolZone)

speed code

0-20 0

21-50 1

51-60 2

61+ 3

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