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NumPy: Create a 5x5 array with random values and find the minimum and maximum values

NumPy: Random Exercise-4 with Solution

Write a NumPy program to create a 5x5 array with random values and find the minimum and maximum values.

Sample Solution :

Python Code :

import numpy as np
x = np.random.random((5,5))
print("Original Array:")
print(x) 
xmin, xmax = x.min(), x.max()
print("Minimum and Maximum Values:")
print(xmin, xmax)

Sample Output:

Original Array:                                                        
[[ 0.3839264   0.6527485   0.41092465  0.63987331  0.72739435]         
 [ 0.1711146   0.7542493   0.30799339  0.79689356  0.92014308]         
 [ 0.14420449  0.28689129  0.69339598  0.26608753  0.20895817]         
 [ 0.20215693  0.36993965  0.21283682  0.33183608  0.92672618]         
 [ 0.25734144  0.01083637  0.41502065  0.90604563  0.92236538]]        
Minimum and Maximum Values:                                            
0.0108363710034 0.926726177113

Pictorial Presentation:

NumPy Random: Create a 5x5 array with random values and find the minimum and maximum values

Python-Numpy Code Editor:

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Previous: Write a NumPy program to create a 3x3x3 array with random values.
Next: Write a NumPy program to create a random 10x4 array and extract the first five rows of the array and store them into a variable.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m