Which is in order ?

Question

Rearrange the code to define a function that calculates the sum of all numbers from 0 to its argument.
0.)def sum(x):
1.) res += i
2.) return res
3.) for i in range(x):
4.)res = 0

Answer 1

def sum(x):
res=0
for i in range(x):
res+= i
return res