Given that 
```
f0 = '0'
f1 = '01'
f2 = '010' = f1 + f0
f3 = '01001' = f2 + f1
```

You will be given a number and your task is to return the `nth` fibonacci string. For example:

```
solve(2) = '010'
solve(3) = '01001'
```

More examples in test cases. Good luck!

If you like sequence Katas, you will enjoy this Kata: [Simple Prime Streaming](https://www.codewars.com/kata/5a908da30025e995880000e3)

Difficulty: EASY
Starter code: def solve(n):
	

Solutions:
def solve(n):
	(a, b) = '01'
	for _ in range(n):
		(a, b) = (a + b, a)
	return a


def solve(n):
	return '0' if n == 0 else '01' if n == 1 else solve(n - 1) + solve(n - 2)


def solve(n):
	(a, b) = ('0', '01')
	for i in range(0, n):
		a = b + a
		(a, b) = (b, a)
	return a
	pass


def solve(n):
	(x, y) = ('0', '01')
	for i in range(n):
		(x, y) = (y, y + x)
	return x


def solve(n):
	if n < 1:
		return str(n)
	if n < 2:
		return solve(n - 1) + str(n)
	return solve(n - 1) + solve(n - 2)


def solve(n, f='0', g='01'):
	return solve(n - 1, g, g + f) if n else f


def solve(n):
	print(n)
	a = '0'
	b = '01'
	lf = 1
	if n > 1:
		for i in range(n - lf):
			c = b + a
			a = b
			b = c
		return c
	elif n == 1:
		return b
	else:
		return a


def solve(n):
	if n == 0:
		return '0'
	if n == 1:
		return '01'
	return f'{solve(n - 1)}{solve(n - 2)}'


def solve(n):
	FIB = ['0', '01']
	for _ in range(len(FIB), n + 1):
		FIB.append(FIB[-1] + FIB[-2])
	return FIB[n]