#write a function that creates a new random list of integers
#of specific size and integers in specific range
#we will write several solutions to demostrate differents way to solve it
#we will write main to test it

#write a function make_even_odd that has one parameter  - list of integers
#function returns TWO new lists: list of evens and list of odds

import random
#version 1
def make_random_list(size, min_limit, max_limit):
	my_list=[]
	for i in range(size): #i=0,1,2,....size-1
		my_list.append(random.randint(min_limit, max_limit))
	return my_list

#version 2 List comprehensions - shortcut to create a list
def make_random_list1(size, min_limit, max_limit):
	return [random.randint(min_limit, max_limit) for i in range(size)]

#version 1 for even/odd

def make_even_odd(my_list):
	odd=[]
	even=[]
	for i in range(len(my_list)): #i=0,1,2,3....size-1
	#i-is an INDEX
		if(my_list[i]%2==0):
			even.append(my_list[i])
		else:
			odd.append(my_list[i])
	return even, odd
	"""	
	WRONG SOLUTION
	return even
	return odd
	"""
#version 2
def make_even_odd1(my_list):
	odd=[]
	even=[]
	for i in my_list: #i - is a list element
		if(i%2==0):
			even.append(i)
		else:
			odd.append(i)
	return even, odd

#version 3 - list comprehensions
def make_even_odd2(my_list):
	even=[item for item in my_list if item%2==0]
	odd=[item for item in my_list if item%2!=0]	
	return even,odd
#write a function that CHANGES original list by replacing all evens with the 
#value
def replace(my_list, value):
	for i in range(len(my_list)):
		if(my_list[i]%2==0):
			my_list[i]=value
#IMPORTANT: to change original list we have to use for i in range(size)
#using for item in my_list will not work

#TRY THIS:
def replace1(my_list, value):
	for item in my_list:
		if(item%2==0):
			item=value 

#make new list where all evens replaced with specific value
def make_new(my_list, value):
	return [value if item%2==0 else item for item in my_list]
#IMPORTANT! list comprehension approach cannot change original list

def main():
	list=make_random_list(10, -5,5)
	print(list)
	list1=make_random_list1(5,-100,100)
	print(list1)

	#call function that returns multiple items

	#version 1

	even, odd=make_even_odd(list)
	print("evens",even)
	print("odds",odd)

	#version 2
	result=make_even_odd1(list)
	print("evens and odds",result)

	#version 3
	result=make_even_odd2(list)
	print("even", result[0])
	print("odd",result[1])
	
	#Part 2 creating new list/or replacing existing one
	#evens replaced with different number
	my_list=make_random_list(10,-5,5)
	print("original list",my_list)
	new_list=make_new(my_list, 100)
	print("original list", my_list)
	print("new list after replacement",new_list)
	#IMPORTANT! list comprehension approach cannot change original list
	replace(my_list, -1)
	print("original list", my_list)
	print("original list after replacement",my_list)
	#using for item in my_list and it doesn't work to change the list
	my_list=make_random_list(10,-10,10)
	replace1(my_list,-2)
	print("original list", my_list)
	print("original list after replacement",my_list)


main()