#challenge

💻 Array of Multiples | #easy

Create a function that takes two numbers as arguments (num, length) and returns an array of multiples of num until the array length reaches length.

Examples:

ArrayOfMultiples(7, 5) ➞ [7, 14, 21, 28, 35]
ArrayOfMultiples(12, 10) ➞ [12, 24, 36, 48, 60, 72, 84, 96, 108, 120]
ArrayOfMultiples(17, 6) ➞ [17, 34, 51, 68, 85, 102]

For your convenience: dotnetfiddle.

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

#interview

✨ Here is a solution for the #challenge above

💬 Personally, I like the first solution more, it is much more expressive!

#challenge

💻 Check if a Number is Prime | #easy

Create a function that returns true if a number is prime, and false otherwise. A prime number is any positive integer that is evenly divisible by only two divisors: 1 and itself.

The first ten prime numbers are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Examples:

isPrime(31) ➞ true
isPrime(18) ➞ false
isPrime(11) ➞ true

For your convenience: dotnetfiddle.

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

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✨ Here is a solution for the #challenge above

#challenge

💻 Capitalize the First Letter of Each Word | #easy

Create a function that takes a string as an argument and converts the first character of each word to uppercase. Return the newly formatted string.

Examples:

MakeTitle("This is a title") ➞ "This Is A Title"
MakeTitle("capitalize every word") ➞ "Capitalize Every Word"
MakeTitle("I Like Pizza") ➞ "I Like Pizza"
MakeTitle("PIZZA PIZZA PIZZA") ➞ "PIZZA PIZZA PIZZA"

For your convenience: dotnetfiddle.

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

#interview

✨ Here is a solution for the #challenge above

💬 Actually, I vote for this solution to this #challenge instead.

Thx to Roman!

#challenge

💻 Perfect Number | #easy

Create a function that tests whether or not an integer is a perfect number. A perfect number is a number that can be written as the sum of its factors, (equal to sum of its proper divisors) excluding the number itself.

For example, 6 is a perfect number, since 1 + 2 + 3 = 6, where 1, 2, and 3 are all factors of 6. Similarly, 28 is a perfect number, since 1 + 2 + 4 + 7 + 14 = 28.

Examples:

CheckPerfect(6) ➞ true
CheckPerfect(28) ➞ true
CheckPerfect(496) ➞ true
CheckPerfect(12) ➞ false
CheckPerfect(97) ➞ false

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

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✨ Here is a solution for the #challenge above

#challenge

💻 Is the Input Factorial of an Integer? | #easy

Create a function that checks if a given integer is exactly the factorial of an integer or not. true if it is, false otherwise.

Examples:

isFactorial(2) ➞ true
// 2 = 2 * 1 = 2!

isFactorial(27) ➞ false

isFactorial(24) ➞ true
// 24 = 4 * 3 * 2 * 1 = 4!

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

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✨ Here is a solution for the #challenge above

#challenge

💻 Largest Gap | #easy

Given an array of integers, return the largest gap between elements of the sorted version of that array.

Here's an illustrative example. Consider the array:

9, 4, 26, 26, 0, 0, 5, 20, 6, 25, 5

... which, after sorting, becomes the array:

0, 0, 4, 5, 5, 6, 9, 20, 25, 26, 26

... so that we now see that the largest gap in the array is the gap of 11 between 9 and 20.

Examples:

LargestGap(new int[] { 9, 4, 26, 26, 0, 0, 5, 20, 6, 25, 5 }) ➞ 11
// After sorting get { 0, 0, 4, 5, 5, 6, 9, 20, 25, 26, 26 }
// Largest gap of 11 between 9 and 20

LargestGap(new int[] { 14, 13, 7, 1, 4, 12, 3, 7, 7, 12, 11, 5, 7 }) ➞ 4
// After sorting get { 1, 3, 4, 5, 7, 7, 7, 7, 11, 12, 12, 13, 14 }
// Largest gap of 4 between 7 and 11

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

#interview

✨ Here is a solution for the #challenge above

💬 At first blush, it seems tricky but, in my opinion, this solution is really graceful

#challenge

💻 Compounding Letters | #easy

Create a function that takes a string and returns a new string with each new character accumulating by +1. Separate each set with a dash.

Capitalize the first letter of each set.

Examples:

Accum("abcd") ➞ "A-Bb-Ccc-Dddd"
Accum("RqaEzty") ➞ "R-Qq-Aaa-Eeee-Zzzzz-Tttttt-Yyyyyyy"
Accum("cwAt") ➞ "C-Ww-Aaa-Tttt"

🏆 Leave your solutions in the comments. The solution will be posted below in a couple of hours 👇

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