Python | Reverse array

NumPy | Python Methods and Functions | reverse array

Method # 1: Using a shortcut

# Python code for demonstration
# how to reverse the numpy array
# using the shortcut

import numpy as np

# numpy array initialization

ini_array = np.array ([ 1 , 2 , 3 , 6 , 4 , 5 ])

# print the initial ini_array

print ( "initial array" , str (ini_array))

# print type ini_array

print ( "type of ini_array" , type (ini_array))

# using the shortcut method for reverse

res = ini_array [:: - 1 ]

   
  # print result  
   print   (  "final array"   ,   str   (res))

Exit:

 initial array [1 2 3 6 4 5] type of ini_array & lt; class `numpy.ndarray` & gt; final array [5 4 6 3 2 1]

Method # 2: Using the flipud

# Python code for demonstration
# how to reverse the numpy array
# using flipud method

import numpy as np

# numpy array initialization

   ini_array   =   np.array ([  1  ,   2  ,   3  ,   6   ,   4  ,   5  ]) 
   
  # print the initial ini_array  
   print   (  "initial array"  ,   str   (ini_array)) 
   
  # print type ini_array  
   print   ( " type of ini_array " ,   type   (ini_array)) 
   
  # using the flipud method to reverse  
   res   =   np.flipud (ini_array)   
   
  # print result  
   print   (  "final array"  ,   str   (res))

Exit :

 initial array [1 2 3 6 4 5] type of ini_array & lt; class `numpy.ndarray` & gt; final array [5 4 6 3 2 1]

Python | Reverse array

Python | Reverse array: StackOverflow Questions

Books for developers

Taming Big Data with Apache Spark and Python

The Pragmatic Programmer

Expert Python Programming: Third Edition

Big Data Concepts, Theories, and Applications

Submit new EBook