Pair iteration in a list using list comprehension
List comprehension can be used to print the pairs by accessing the current and next elements in the list and then printing the same. Care has to be taken while pairing the last element with the first one to form a cyclic pair.
Python3
from itertools import compress# initializing listtest_list = [0, 1, 2, 3, 4, 5]# printing original listprint ("The original list is : " + str(test_list))# using list comprehension# to perform pair iteration in listres = [((i), (i + 1) % len(test_list)) for i in range(len(test_list))]# printing resultprint ("The pair list is : " + str(res)) |
Output:
The original list is : [0, 1, 2, 3, 4, 5] The pair list is : [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 0)]
Time complexity: O(n), where n is the length of the test_list.
Auxiliary space: O(n), where n is the length of the test_list.
Python | Pair iteration in list
List iteration is common in Python programming, but sometimes one requires to print the elements in consecutive pairs. This particular problem is quite common and having a solution to it always turns out to be handy. Let’s discuss certain ways in which this problem can be solved.
Contact Us