You get an array of numbers, return the sum of all of the positives ones.

Example `[1,-4,7,12]` => `1 + 7 + 12 = 20`

Note: if there is nothing to sum, the sum is default to `0`.

Difficulty: EASY
Starter code: def positive_sum(arr):
	

Solutions:
def positive_sum(arr):
	return sum((x for x in arr if x > 0))


def positive_sum(arr):
	sum = 0
	for e in arr:
		if e > 0:
			sum = sum + e
	return sum


def positive_sum(arr):
	return sum(filter(lambda x: x > 0, arr))


positive_sum = lambda l: sum((x for x in l if x >= 0))


def positive_sum(arr):
	return sum((i for i in arr if i > 0))


def positive_sum(list):
	answer = 0
	for numbers in list:
		if numbers > 0:
			answer += numbers
	return answer


def positive_sum(arr):
	summ = 0
	for temp in arr:
		if temp > 0:
			summ += temp
	return summ


def positive_sum(arr):
	return sum((max(i, 0) for i in arr))


positive_sum = lambda a: sum((e for e in a if e > 0))


def positive_sum(arr):
	return sum([i for i in arr if i == abs(i)])


def positive_sum(arr):
	L = []
	for i in arr:
		if i > 0:
			L.append(i)
	return sum(L)


positive_sum = lambda a: sum((x > 0 and x for x in a))


def positive_sum(arr):
	nums = [num for num in arr if num > 0]
	return sum(nums)


positive_sum = lambda arr: sum((e for e in arr if e > 0))


def positive_sum(arr):
	add = 0
	addtemp = 0
	index = 0
	for i in arr:
		if i > 0:
			add = arr[index]
			index += 1
			add = add + addtemp
			addtemp = add
			print(add)
		else:
			print('skipping the {}'.format(i))
			index += 1
	if add > 0:
		return add
	else:
		return 0


def positive_sum(arr):
	summ = 0
	for num in arr:
		if num >= 0:
			summ += num
	return summ


def positive_sum(arr):
	add = []
	for item in arr:
		if item > 0:
			add.append(item)
	return sum(add)
	return 0


def positive_sum(arr):
	res = 0
	for i in arr:
		if not arr:
			return 0
		elif i < 0:
			continue
		else:
			res += i
	return res


def positive_sum(arr):
	sum = 0
	if not arr:
		return sum
	for n in arr:
		if n >= 0:
			sum = sum + n
	return sum


def positive_sum(n):
	b = 0
	if not n:
		return 0
	else:
		for i in range(len(n)):
			if n[i] < 0:
				pass
			else:
				b += n[i]
		return b


from functools import reduce

def positive_sum(arr):
	return reduce(lambda acc, n: acc + n if n > 0 else acc, arr, 0)


def positive_sum(arr):
	sum = 0
	for n in range(0, len(arr)):
		if arr[n] > 0:
			sum += arr[n]
	return sum


def positive_sum(arr):
	positive_list = []
	for num in arr:
		if num >= 0:
			positive_list.append(num)
	result = sum(positive_list)
	return result


def positive_sum(arr):
	sum = 0
	if arr:
		for numb in arr:
			if numb > 0:
				sum = sum + numb
	return sum


def positive_sum(arr):
	return sum([a for a in arr if a > 0])


def positive_sum(arr):
	return sum([abs(x) for x in arr] + arr) // 2


positive_sum = lambda a: sum(filter(lambda x: x > 0, a))


positive_sum = lambda a: sum(map(lambda n: n > 0 and n, a))


positive_sum = lambda lst: sum(list(filter(lambda _: _ > 0, lst)))


from functools import reduce

def positive_sum(arr):
	arr = list(filter(lambda x: x > 0, arr))
	try:
		return reduce(lambda x, y: x + y, arr)
	except:
		return 0


def positive_sum(arr):
	return sum([_ for _ in arr if _ > 0])


from functools import reduce

def positive_sum(arr):
	return reduce(lambda x, y: x + max(0, y), arr, 0)


def positive_sum(arr):
	sum = 0
	for el in arr:
		if el > 0:
			sum += int(el)
	return sum


def positive_sum(arr):
	total = 0
	for a in arr:
		if '-' not in str(a):
			total += a
	return total


def positive_sum(arr):
	res = []
	for x in arr:
		if x > 0:
			res.append(x)
	return sum(res)


def positive_sum(arr):
	ans = []
	for n in list(arr):
		if n >= int(0):
			ans.append(n)
	return sum(ans)


def positive_sum(arr):
	pos_arr = list([x for x in arr if x > 0])
	if pos_arr:
		return sum(pos_arr)
	return 0