Python – K difference Consecutive elements
Given a list of integer elements, check for each element if its difference with successive element is K.
Input : test_list = [5, 6, 3, 2, 5, 3, 4], K = 1
Output : [True, False, True, False, False, True]
Explanation : 5, 6; 3, 2; and 3, 4 have 1 diff. between them.Input : test_list = [5, 6, 3, 2, 5, 3, 4], K = 2
Output : [False, False, False, False, True, False]
Explanation : Only 5, 3 has 2 diff between it.
Method #1 : Using list comprehension
This is one of the ways in which this task can be performed. In this, we check for each element with next one, if difference is K then we tag it True, else False.
Python3
# Python3 code to demonstrate working of # K difference Consecutive elements# Using list comprehension # initializing listtest_list = [5, 6, 3, 2, 5, 3, 4] # printing original listprint("The original list : " + str(test_list)) # initializing K K = 3 # using list comprehension and abs() to compute resultres = [True if abs(test_list[idx] - test_list[idx + 1]) == K else False for idx in range(len(test_list) - 1)] # printing result print("The difference list result : " + str(res)) |
The original list : [5, 6, 3, 2, 5, 3, 4] The difference list result : [False, True, False, True, False, False]
Method #2 : Using zip() + list comprehension
This is another way in which this task can be performed. In this the consecutive list is paired using zip() and computations run through list comprehension.
Python3
# Python3 code to demonstrate working of # K difference Consecutive elements# Using zip() + list comprehension # initializing listtest_list = [5, 6, 3, 2, 5, 3, 4] # printing original listprint("The original list : " + str(test_list)) # initializing K K = 3 # using list comprehension and abs() to compute result# zip() used to pair Consecutive elements listres = [abs(a - b) == K for a, b in zip(test_list, test_list[1:])] # printing result print("The difference list result : " + str(res)) |
The original list : [5, 6, 3, 2, 5, 3, 4] The difference list result : [False, True, False, True, False, False]
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