Method: Using a list comprehension
This task can be done in a crude way, but it is always better to have a shorter implementation using a list comprehension. In this we perform the task in 2 steps, first we create a list of helpers to form a list of multiplication factors, and then we accumulate the result using the original list.
| # Python3 demo code
# Repeat and multiply list extension
# Using comprehension list
# initializing list test_list = [ 4 , 5 , 6 ]
# print original list print ( "The original list is:" + str (test_list))
# Expansion factor N = 4
# Multiplication factor M = 3
# Repeat and multiply the list extension
# Using the comprehension list temp = [ 1 * M * * i for i in range (N)] res = list ([ele * tele for tele in temp for ele in test_list])
# print result print ( "List after extension and multiplication:" + str (res)) |
Output:
The original list is: [4, 5, 6] List after extension and multiplication: [4, 5, 6, 12, 15, 18, 36, 45, 54, 108, 135, 162]
Python | Repeat and multiply list expansion exp: Questions
Python | Repeat and multiply list expansion Python functions: Questions
