PRG420 Java Programming I

PRG/420 Week 4 Java 4.14 LAB: Contains the character

Write a program that reads an integer, a list of words, and a character. The integer signifies how many words are in the list. The output of the program is every word in the list that contains the character at least once. Assume at least one word in the list will contain the given character. Assume that the list of words will always contain fewer than 20 words.

Ex: If the input is:
4 hello zoo sleep drizzle z
then the output is:
zoo drizzle

To achieve the above, first read the list into an array. Keep in mind that the character 'a' is not equal to the character 'A.

PRG/420 Week 4 Java 4.13 LAB: Word frequencies

Write a program that reads a list of words. Then, the program outputs those words and their frequencies. The input begins with an integer indicating the number of words that follow. Assume that the list will always contain fewer than 20 words.

Ex: If the input is:
5 hey hi Mark hi mark
the output is:
hey 1
hi 2
Mark 1
hi 2
mark 1

Hint: Use two arrays, one array for the strings and one array for the frequencies.

PRG/420 Week 4 Java 4.12 LAB: Adjust list by normalizing

When analyzing data sets, such as data for human heights or for human weights, a common step is to adjust the data. This can be done by normalizing to values between 0 and 1, or throwing away outliers.
For this program, adjust the values by subtracting the smallest value from all the values. The input begins with an integer indicating the number of integers that follow. Assume that the list will always contain fewer than 20 integers.

Ex: If the input is:
5 30 50 10 70 65
the output is:
20 40 0 60 55

The 5 indicates that there are five values in the list, namely 30, 50, 10, 70, and 65. 10 is the smallest value in the list, so is subtracted from each value in the list.

For coding simplicity, follow every output value by a space, including the last one.

PRG/420 Week 4 Java 4.11 LAB: Output values below an amount

Write a program that first gets a list of integers from input. The input begins with an integer indicating the number of integers that follow. Then, get the last value from the input, which indicates a threshold. Output all integers less than or equal to that last threshold value. Assume that the list will always contain fewer than 20 integers.

Ex: If the input is:
5 50 60 140 200 75 100
the output is:
50 60 75

The 5 indicates that there are five integers in the list, namely 50, 60, 140, 200, and 75. The 100 indicates that the program should output all integers less than or equal to 100, so the program outputs 50, 60, and 75. For coding simplicity, follow every output value by a space, including the last one. Such functionality is common on sites like Amazon, where a user can filter results.

PRG/420 Week 4 Java 4.10 LAB: Middle item

Given a sorted list of integers, output the middle integer. Assume the number of integers is always odd.

Ex: If the input is:
2 3 4 8 11 -1
(where a negative indicates the end), the output is:
4

The maximum number of inputs for any test case should not exceed 9. If exceeded, output "Too many inputs".
Hint: First read the data into an array. Then, based on the array's size, find the middle item.

PRG/420 Week 4 Java 4.9 LAB: Output numbers in reverse

Write a program that reads a list of integers, and outputs those integers in reverse. The input begins with an integer indicating the number of integers that follow. For coding simplicity, follow each output integer by a space, including the last one. Assume that the list will always contain fewer than 20 integers.

Ex: If the input is:
5 2 4 6 8 10
the output is:
10 8 6 4 2
To achieve the above, first read the integers into an array. Then output the array in reverse.

PRG/420 Week 3 Java 3.18 LAB: Palindrome

A palindrome is a word or a phrase that is the same when read both forward and backward. Examples are: 'bob,' "sees,' or "never odd or even' (ignoring spaces). Write a program whose input is a word or phrase, and that outputs whether the input is a palindrome.

Ex: If the input is:
bob
the output is:
bob is a palindrome

Ex: If the input is:
bobby
the output is:
bobby is not a palindrome

Hint: Start by just handling single-word input, and submit for grading. Once passing single-word test cases, extend the program to handle phrases. If the input is a phrase, remove or ignore spaces.

PRG/420 Week 3 Java 3.17 LAB: Print string in reverse

Write a program that takes in a line of text as input, and outputs that line of text in reverse. The program repeats, ending when the user enters 'Quit', "quit, or 'q' for the line of text.

Ex: If the input is:
Hello there
Hey
quit
the output is:
ereht olleH
yeH

PRG/420 Week 3 Java 3.16 LAB: Output range with increment of 10

Write a program whose input is two integers, and whose output is the first integer and subsequent increments of 10 as long as the value is less than or equal to the second integer.

Ex: If the input is:
-15 30
the output is:
-15 -5 5 15 25

Ex: If the second integer is less than the first as in:
20 5
the output is:
Second integer can't be less than the first.
For coding simplicity, output a space after every integer, including the last.