PRG420 Java Programming I

PRG/420 Week 3 Java 3.14 LAB: Remove spaces

Write a program that removes all spaces from the given input.

Ex: If the input is:
Hello my name is John.

the output is:
HellomynameisJohn.

PRG/420 Week 3 Java 3.13 LAB: Checker for integer string

Forms often allow a user to enter an integer. Write a program that takes in a string representing an integer as input, and outputs yes if every character is a digit 0-9.

Ex: If the input is:
1995
the output is:
yes

Ex: If the input is:
42,000
or
1995!
the output is:
no

Hint: Use a loop and the Character.isDigit() function.

PRG/420 Week 3 Java 3.12 LAB: Varied amount of input data

Statistics are often calculated with varying amounts of input data. Write a program that takes any number of non-negative integers as input, and outputs the average and max. A negative integer ends the input and is not included in the statistics.

Ex: When the input is:
15 20 0 5 -1

the output is:
10 20
You can assume that at least one non-negative integer is input.

PRG/420 Week 3 Java 3.11 LAB: Mad Lib - Loops

Mad Libs are activities that have a person provide various words, which are then used to complete a short story in unexpected (and hopefully funny) ways.

Write a program that takes a string and integer as input, and outputs a sentence using those items as below. The program repeats until the input string is quit 0.

Ex: If the input is:
apples 5
shoes 2
quit 0

the output is:
Eating 5 apples a day keeps the doctor away.
Eating 2 shoes a day keeps the doctor away.

Note: This is a lab from a previous chapter that now requires the use of a loop.

PRG/420 Week 2 Java 2.24 LAB: Name format

Many documents use a specific format for a person's name. Write a program whose input is: firstName middleName lastName, and whose output is: lastName, firstName middlelnitial.

Ex: If the input is:
Pat Silly Doe
the output is:
Doe, Pat S.
If the input has the form firstName lastName, the output is lastName, firstName.

Ex: If the input is:
Julia Clark
the output is:
Clark, Julia

PRG/420 Week 2 Java 2.23 LAB: Leap Year

A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are:
1) The year must be divisible by 4
2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400
Some example leap years are 1600, 1712, and 2016.

Write a program that takes in a year and determines whether that year is a leap year.

Ex: If the input is:
1712
the output is:
1712 is a leap year.

Ex: If the input is:
1913
the output is:
1913 is not a leap year.

PRG/420 Week 2 Java 2.22 LAB: Exact change

Write a program with total change amount in pennies as an integer input, and output the change using the fewest coins, one coin type per line. The coin types are Dollars, Quarters, Dimes, Nickels, and Pennies. Use singular and plural coin names as appropriate, like 1 Penny vs. 2 Pennies.

Ex: If the input is:
0
the output is:
No change

Ex: If the input is:
45
the output is:
1 Quarter
2 Dimes

PRG/420 Week 2 Java 2.21 LAB: Seasons

Write a program that takes a date as input and outputs the date's season. The input is a string to represent the month and an int to represent the day.

Ex: If the input is:
April 11
the output is:
Spring
In addition, check if the string and int are valid (an actual month and day).

Ex: If the input is:
Blue 65
the output is:
Invalid

The dates for each season are:
Spring: March 20 - June 20
Summer: June 21- September 21
Autumn: September 22 - December 20
Winter: December 21 - March 19

PRG/420 Week 2 Java 2.20 LAB: Interstate highway numbers

Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90.
Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also indicate if the (primary) highway runs north/south or east/west.

Ex: If the input is:
90
the output is:
I-90 is primary, going east/west.
Ex: If the input is:
290
the output is:
I-290 is auxiliary, serving I-90, going east/west.
Ex: If the input is:
0
or any number not between 1 and 999, the output is:
0 is not a valid interstate highway number.

See Wikipedia for more info on highway numbering.