HW_week1_Day4_FunctionsAndStrings

Note: You must save your solution as solution_part1.kt for Part I, and solution_part2.kt for Part II to be submitted before 9AM. ⚠️

Instructions 📋

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Part I - Practice with functions and strings.

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a. Write a function to display the middle character of a string.

fun main() {
   println(mdChar("ali"))
}

Output:

The middle character in the string: l

b. Write a function to count all vowels in a string.

fun main() {
   println(vowCount("supermarket"))
}

Output:

Number of  Vowels in the string: 4

c. Write a function named isEven that accepts an int argument. The method should return true if the argument is even, or false otherwise.

fun main() {
    println(isEven(2))
}

Output:

true

d. Write a function named removeSpace() which removes spaces from a string

fun main() {
    println("John Doe)
}

Output:

JohnDoe

e. Write a function returns a new string with first and last character removed

Part II - Challenges (Optional).

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a. Write a method that takes as input a string and returns true if the string is a palindrome;

    isPalindrome("radar")

Output:

    "radar" is a palindrome string.

b. Write a function to check whether a string is a valid password.

Password rules: A password must have at least ten characters. A password consists of only letters and digits. A password must contain at least two digits.

    validate("abcd1234")

Output:

    Password is valid: abcd1234 

c. Write a function named roundOff() which returns formated rounded float #.##

    roundOff(34.5458738f)

Output:

    34.50

Learning Resources 📚

• Functions in Kotlin
• Strings in Kotlin