merge 3 sorted lists python code example

Example 1: merge two lists

# Makes list1 longer by appending the elements of list2 at the end.
list1.extend(list2)

Example 2: merge two sorted lists python

from heapq import merge 
  
# initializing lists 
test_list1 = [1, 5, 6, 9, 11] 
test_list2 = [3, 4, 7, 8, 10] 
  
# printing original lists  
print ("The original list 1 is : " + str(test_list1)) 
print ("The original list 2 is : " + str(test_list2)) 
  
# using heapq.merge() 
# to combine two sorted lists 
res = list(merge(test_list1, test_list2)) 
  
# printing result 
print ("The combined sorted list is : " + str(res))