Following on from [Part 1](http://www.codewars.com/kata/filling-an-array-part-1/), part 2 looks at some more complicated array contents.

So let's try filling an array with...

## ...square numbers
The numbers from `1` to `n*n`

## ...a range of numbers
A range of numbers starting from `start` and increasing by `step`

## ...random numbers
A bunch of random integers between `min` and `max`

## ...prime numbers
All primes starting from `2` (obviously)...

HOTE: All the above functions should take as their first parameter a number that determines the length of the returned array.

Source: codewars | Difficulty: EASY
Tags: Fundamentals

Data structures

Starter code: def squares(n):
	

Solutions:
import random

def squares(n):
	return [i ** 2 for i in range(1, n + 1)]

def num_range(n, start, step):
	return [i for i in range(start, start + step * n, step)]

def rand_range(n, mn, mx):
	return [random.randint(mn, mx) for i in range(n)]

def primes(n):
	return [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113][:n]


from random import randint
PRIMES = [2] + [n for n in range(3, 10 ** 3, 2) if all((n % d for d in range(3, int(n ** 0.5) + 1, 2)))]

def squares(n):
	return [x * x for x in range(1, n + 1)]

def num_range(n, start, step):
	return [start + step * i for i in range(n)]

def rand_range(n, mn, mx):
	return [randint(mn, mx) for _ in range(n)]

def primes(n):
	return PRIMES[:n]


from random import choices
from itertools import islice, count

def squares(n):
	return [a ** 2 for a in range(1, n + 1)]

def num_range(n, start, step):
	return list(islice(count(start, step), n))

def rand_range(n, mn, mx):
	return choices(range(mn, mx + 1), k=n)

def primes(n):
	return list(islice((a for a in count(2) if all((a % b != 0 for b in range(2, 1 + int(a ** 0.5))))), n))


import random

def squares(n):
	return [i * i for i in range(1, n + 1)]

def num_range(n, start, step):
	return [i for i in range(start, start + n * step, step)]

def rand_range(n, mn, mx):
	return [random.randint(mn, mx) for nvm in range(n)]

def primes(n):
	if n == 1:
		return [2]
	if n == 2:
		return [2, 3]
	c = 2
	ReturnLs = [2, 3]
	i = 5
	while c < n:
		if isprime(i):
			ReturnLs.append(i)
			c += 1
		i += 2
	return ReturnLs

def isprime(n):
	if n % 2 == 0:
		return False
	if n % 3 == 0:
		return False
	for i in range(5, int(n ** 0.5) + 1):
		if n % i == 0:
			return False
	return True


def squares(n):
	return [x ** 2 for x in range(1, n + 1)]

def num_range(n, start, step):
	list = []
	for i in range(n):
		list.append(start)
		start += step
	return list
import random

def rand_range(n, mn, mx):
	return [random.randint(mn, mx) for x in range(n)]

def primes(n):
	list = []
	num = 2
	while len(list) != n:
		prime = True
		for i in range(2, num):
			if num % i == 0:
				prime = False
		if prime:
			list.append(num)
		num += 1
	return list


from random import randint

def squares(n):
	return [pow(i, 2) for i in range(1, n + 1)]

def num_range(n, start, step):
	return list(range(start, start + n * step, step))

def rand_range(n, mn, mx):
	return [randint(mn, mx) for _ in range(n)]

def primes(n):
	return gen_primes(n)

def gen_primes(size):

	def nats(n):
		yield n
		yield from nats(n + 1)

	def sieve(gen):
		n = next(gen)
		yield n
		yield from sieve((i for i in gen if i % n != 0))
	prime_gen = sieve(nats(2))
	return [next(prime_gen) for _ in range(size)]


import random

def squares(n):
	return [i * i for i in range(1, n + 1)]

def num_range(n, start, step):
	list = []
	x = 0
	for i in range(n):
		list.append(start + x)
		x += step
	return list

def rand_range(n, mn, mx):
	return [random.randint(mn, mx) for i in range(n)]

def primes(n):
	list = []
	count = 1
	s = 2
	while count <= n - 1:
		s += 1
		for i in range(2, s):
			if s % i == 0:
				break
		else:
			if i == 2:
				list.append(i)
			i += 1
			list.append(i)
			count += 1
	return list


from random import randint

def squares(n):
	return [i ** 2 for i in range(1, n + 1)]

def num_range(n, start, step):
	return [start + i * step for i in range(n)]

def rand_range(n, mn, mx):
	return [randint(mn, mx) for i in range(n)]

def primes(n):

	def gen_prime(arr):
		yield arr[0]
		yield from gen_prime([i for i in arr if i % arr[0] != 0])
	primes = gen_prime(range(2, n ** 3))
	return [next(primes) for i in range(n)]