Closure Exercises

First Challenge

We sorted a collection by returning a new instance of Array with its integers sorted from smallest to largest. You can also sort collections in place – meaning modifying the existing collection, rather than returning a new one.

Change the way you sort volunteerCounts to sort the array in place from smallest to largest.

Note

check the documentation to find the method that can help you achieve this

Second Challenge

Write a function named applyClosureNTimes that takes an integer N and a closure. The function must call the closure N times. The closure will not take any parameters, but will have to print "I love closures" each time it's runned.

Example

Function call

applyClosureNTimes(3) { 
    print("I love closures")
}

Output

I love closures
I love closures
I love closures

Third Challenge

Use filter to create an array called multiples that contains all the multiples of 5 from an array of integers called numbers. Print the resulting array.

Example

Input

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]

Output

[5, 10, 15]

Fourth Challenge

Find the largest number from an array of integers called numbers by using the reduce method. Print the resulting number.

Example

Input

let numbers = [1, 2, 3, 4, 5, 6, 7]

Output

7

Fifth Challenge

Join the all the values from an array of strings called strings into a single one using the method reduce. Add spaces between each value. Print the resulting string.

Example

Input

let strings = ["I", "love", "functional", "programming"]

Output

"I love functional programming"

Sixth Challenge

Find the sum of the squares of all the odd numbers from an array of integers called numbers. Use the methods map, filter and reduce to solve this problem. Print the resulting number.

Example

Input

let numbers = [1, 2, 3, 4, 5, 6]

Output

35 // 1 + 9 + 25 -> 35

Seventh Challenge

Create a function called combine that takes 2 arrays (of the same length) and a closure. The function must combine the two arrays into a single one by multiplying the numbers in the same positions in the array. Print the resulting array.

Example

Function call

let first = [1, 2, 3, 4]
let second = [5, 5, 5, 3]

combine(first, second) {
    $0 * $1
}

Output

[5, 10, 15, 12]