Python | Calculate difference between adjacent elements in given list
Given a list, the task is to create a new list containing difference of adjacent elements in the given list.
Method #1: Using zip()
# Python code to demonstrate# to calculate difference# between adjacent elements in list # initialising _listini_list = [5, 4, 89, 12, 32, 45] # printing iniial_listprint("intial_list", str(ini_list)) # Calculating difference listdiff_list = []for x, y in zip(ini_list[0::], ini_list[1::]): diff_list.append(y-x) # printing difference listprint ("difference list: ", str(diff_list)) |
Output:
intial_list [5, 4, 89, 12, 32, 45] difference list: [-1, 85, -77, 20, 13]
Method #2: Using Naive approach
# Python code to demonstrate# to calculate difference# between adjacent elements in list # initialising _listini_list = [5, 4, 89, 12, 32, 45] # printing iniial_listprint("intial_list", str(ini_list)) # Calculating difference listdiff_list = [] for i in range(1, len(ini_list)): diff_list.append(ini_list[i] - ini_list[i-1]) # printing difference listprint ("difference list: ", str(diff_list)) |
Output:
intial_list [5, 4, 89, 12, 32, 45] difference list: [-1, 85, -77, 20, 13]
Method #3: Using numpy
# Python code to demonstrate# to calculate difference# between adjacent elements in list import numpy as np# initialising _listini_list = np.array([5, 4, 89, 12, 32, 45]) # printing iniial_listprint("intial_list", str(ini_list)) # Calculating difference listdiff_list = np.diff(ini_list) # printing difference listprint ("difference list: ", str(diff_list)) |
Output:
intial_list [ 5 4 89 12 32 45] difference list: [ -1 85 -77 20 13]
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course
