COMP1231-Assignment2

Table of Contents

1. Function 1A
2. Function 2A
3. Function 3A
4. Function 4A
5. Function 5A
6. Function 6A
7. Function 7A
8. Function 8A
9. Function 9A
10. Function 10A

Unique Array

function uniqueArray(arr)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• Receives an array of integers as an argument
• The function removes all duplicates (if they exist) from the array and returns it to the caller.
• Assume the input array parameter will have at least one element in it.
• Displays the calculated information as illustrated below:

Calling uniqueArray([33]) ➔ [33]

Calling uniqueArray([33, 33, 1, 4]) ➔ [1, 4]

Calling uniqueArray([33, 33, 1, 4, 1]) ➔ [4]

Fail Pass Averages

function failPassAvg(arr)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• Receives an array of numbers as a parameter, with each integer being a mark out of 100.
• The function should return an array consisting of all the averages less than 50, followed by the average of all the mark more than 50.
  • both averages should be rounded to the nearest whole number.
  • If there are no failing marks (< 50), then the average fail mark should be set to -1
  • If there are no passing marks (< 50), then the average pass mark should be set to -1
• Displays the calculated information as illustrated below:

Calling failPassAvg(([63, 65, 33]) ➔ [33, 64]

Calling failPassAvg(([[63, 62, 100, 100]]) ➔ [-1, 81]

Calling failPassAvg(([33, 42, 20, 10]) ➔ [26, -1]

Check Date

function checkDate(string)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• Receives a string as a parameter.
• The function returns a Boolean indicating if the parameter string passed, is a valid date
  • True indicates a valid date was provideD
  • False indicates that a valid date was not provided.
• A valid date string, will have only the full month name (ex “January” not “Jan”) and a day number
  • A year will not be provided and thus your logic need not be concerned in that regard.
• The string parameter can contain any number of spaces, but the month name must always start at the first non-space character from the beginning of the string
• The day number part of the date string to be tested could contain alphabetic characters and thus making it invalid.
• You may assume February only has 28 days in it.
• Displays the calculated information as illustrated below:

Calling checkDate("January 21") ➔ true

Calling checkDate("Auust 3") ➔ false

Calling checkDate("June 15B") ➔ false

Calling checkDate("February 0") ➔ false

Calling checkDate("December 3k1") ➔false

Calling checkDate("February 29") ➔ false

Calling checkDate("February 28") ➔ true

How many Days Between

function daysBetweenTwoDates( str_date1, str_date2 )

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• Create a function that takes two valid dates as arguments
• The function returns the number of days between str_date1 and str_date2
• Displays the calculated information as illustrated below:

Calling daysBetweenTwoDates("June 14, 2021", "June 20, 2021") ➔ 6

Calling daysBetweenTwoDates("December 29, 2021", "January 1, 2022") ➔ 3

Calling daysBetweenTwoDates("July 20, 2021", "July 30, 2021") ➔ 10

Swap Characters

function swapCharacter(string, c1, c2)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• That take three arguments, a string, character 1 and character 2
• The function replaces all instances of c1 with c2, and vice versa
• The function returns the updated string
• Displays the result to the console as illustrated below.

Calling swapCharacter("aabbccc", "a", "b") ➔ "bbaaccc"

Calling swapCharacter("random w#rds writt&n h&r&", "#", "&") ➔ "random w&rds writt#n h#r#"

Calling swapCharacter("128 895 556 788 999", "8", "9") ➔ "129 985 556 799 888"

Move Capital Letters

function moveCapitalToFront(string)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• The function moves all capital letters to the front of a word.
• The uppercase letters moved to the front, maintain their original relative order
• The lowercase letters moved to the back front, maintain their original relative order
• Displays the result to the console as illustrated below:

Calling moveCapitalToFront("hApPy") ➔ "APhpy"

Calling moveCapitalToFront("moveMENT") ➔ "MENTmove"

Calling moveCapitalToFront("shOrtCAKE") ➔ "OCAKEshrt"

Leading Zeros

function trimZero(string)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• That takes in a string number as an argument
• The function returns the number removing any trailing and/or leading zeros.
• Trailing zeros are the zeros after a decimal point which don’t affect the value of the number
• Leading zeros are the zeros before a number which don’t affect the value of the number
• Displays the results to the console as illustrated below:

Calling trimZero("230.000") ➔ "230"

Calling trimZero("00402") ➔ "402"

Calling trimZero("03.1400") ➔ "3.14"

Calling trimZero("30") ➔ "30"

Sort Me

function sortArray(arr[], str)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• That takes in an array of integers, and a string (“Asc”, “Des”, “None”)
• The function returns the array of number according to the following rules
  • “Asc” returns a sorted array in ascending order
  • “Des” returns a sorted array in descending order
  • “None” returns an array without any modification
• Displays the result to the console as illustrated below:

Calling sortArray([4, 3, 2, 1], "Asc") ➔ [1, 2, 3, 4]

Calling sortArray([7, 8, 11, 66], "Des") ➔ [66, 11, 8, 7]

Calling sortArray([1, 2, 3, 4], "None") ➔ [1, 2, 3, 4]

Repeating Characters

function repeatingCharacter(string)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• That takes in a string
• The function returns the first character that repeats
• If there is no character that repeats, return -1
• The function should be case sensitive (case sensitive "I" not equal to "i")
• Displays the result to the console as illustrated below.

Calling repeatingCharacter(“legolas”) ➔ "l"

Calling repeatingCharacter(“Gandalf”) ➔ "a"

Calling repeatingCharacter(“Balrog”) ➔ "-1"

Calling repeatingCharacter(“Isildur”) ➔ "-l"

Capitalize first Letter of Each Word

function capitalizeFirstLetter(string)

Create a JavaScript function that meets the following requirements:

• Please give your function a descriptive name
• That takes in a string as an argument
• The function converts first character of each word to uppercase
• The function returns the newly formatted string
• Displays the result to the console as illustrated below.

Calling capitalizeFirstLetter("This is a title") ➔ "This Is A Title"

Calling capitalizeFirstLetter("capitalize every word") ➔ "Capitalize Every Word"

Calling capitalizeFirstLetter("I Like Pizza") ➔ "I Like Pizza"

Calling capitalizeFirstLetter("PIZZA PIZZA PIZZA") ➔ "PIZZA PIZZA PIZZA"