28 lines
509 B
Python
28 lines
509 B
Python
|
|
|
|
def append(list1, list2):
|
|
result = []
|
|
for item in list1:
|
|
result += [item]
|
|
for item in list2:
|
|
result += [item]
|
|
return result
|
|
|
|
def concat(lists):
|
|
result = []
|
|
for sublist in lists
|
|
result = append(result, sublist)
|
|
return result
|
|
|
|
def filter(function, list):
|
|
result = []
|
|
for item in list:
|
|
if function(item):
|
|
result += [item]
|
|
return result
|
|
|
|
def length(l):
|
|
result = 0
|
|
for item in l:
|
|
result +=1
|
|
return result |