Python program to create 1D array of elements and find odd/even numbers

               1D(single Dimensional) array is a collection of similar elements. Let us create a 1D array of elements in python as follows….

Creation of 1D array from 1 to 20:

• This program starts from import the built-in file “numpy” and create an object for numpy as np.
• Create an array as s_arr. Using the function “arange()” to assign the size.
• Here, we set the range as 20 members.
• Finally, print the array elements using print() function.

Python Code:

import numpy as np

# Create a 1D(single dimensional) array from 1 to 20

s_arr = np.arange(1, 21)

print("Here is the 1D Array:\n", s_arr)

Output:

Here is the 1D Array:

 [ 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20]

Print Even numbers in the array:

              This program imports the numpy, the built-in file. It creates the object for numpy.

• First, create an array with 20 data members. To create the even_numbers,just use the % operator.
• Find the array elements with even numbers. Print the original array and even_numbers array.

Python Code:

 import numpy as np

# Create a single dimensional array from 1 to 20

s_arr = np.arange(1, 21)

#let us find the even numbers

even_numbers = s_arr[s_arr % 2 == 0]

print("Original Array:\n", s_arr)

print("Even Numbers:\n", even_numbers)

Output:

Original Array:

 [ 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20]

Even Numbers:

 [ 2  4  6  8 10 12 14 16 18 20]

Print the Odd numbers in the array:

              Import the built-in file numpy and make the object. As usual, create an array.

• Divide the array element by 2. If it is not equal to zero, then it is an odd number. Make a list of it.
• At last, print the original array and the array with odd numbers.

Python code:

import numpy as np

# Create a 1D array from 1 to 20

s_arr = np.arange(1, 21)

#Find the odd numbers

odd_numbers = s_arr[s_arr % 2 != 0]

print("Original Array is:\n", s_arr)

print("Odd Numbers:\n", odd_numbers)

Output:

Original Array is:

 [ 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20]

Odd Numbers:

 [ 1  3  5  7  9 11 13 15 17 19]

These are the ways to create an array of elements and find the odd numbers and even numbers was done successfully. Keep Coding!!!