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  2. Python | Calculate the difference between adjacent elements in a given list

Python | Calculate the difference between adjacent elements in a given list

Method # 1: Using zip()

# Python code for demo
# calculate the difference
# between adjacent elements in the list

 

 
# initializing _list

ini_list = [ 5 , 4 , 89 , 12 , 32 , 45 ]

 < br /> # print iniial_list

print ( "intial_list" , str (ini_list))

 
# Difference calculation

diff_list = []

for x, y in zip (ini_list [ 0 ::], ini_list [ 1 ::]):

  diff_list.append (y - x)

 
# print a list of differences

print ( " difference list: " , str (diff_list))

 

Exit :

 intial_list [5, 4, 89, 12, 32, 45] difference list: [-1, 85, -77, 20, 13]

Method # 2: Taking a Naive Approach

# Python code for demo
# calculate the difference
# between adjacent elements in the list

  

 
# initializing _list

ini_list = [ 5 , 4 , 89 , 12 , 32 , 45 ]

 
# print iniial_list

print ( "intial_list" , str (ini_list))

 
# Difference calculation

diff_list = []

 

fo r i in range ( 1 , len (ini_list)):

diff_list.append (ini_list [i] - ini_list [i - 1 ])

  
# print a list of differences

print ( " difference list: " , str (diff_list))

Exit:

 intial_list [5, 4, 89, 12, 32, 45] difference list: [-1, 85, -77, 20, 13]

  Method # 3: Using NumPy

# Python code for demo
# calculate the difference
# between adjacent elements in the list

  

import numpy as np

# initializing _list

ini_list = np .array ([ 5 , 4 , 89 , 12 , 32 , 45 ])

  
# print iniial_list

print ( "intial_list" , str (ini_list))

 
# Difference calculation

diff_list = np. diff (ini_list)

 
# print a list of differences

print ( "difference list:" , str (diff_list))

Exit :

 intial_list [5 4 89 12 32 45] difference list: [-1 85 - 77 20 13]