Python: Find the product of the units digits in the numbers

Python Programming Puzzles: Exercise-53 with Solution

Write a Python program to find the product of the units digits in the numbers of a given list.

Input:
[12, 23]
Output:
6

Input:
[12, 23, 43]
Output:
18

Input:
[113, 234]
Output:
12

Input:
[1002, 2005]
Output:
10

Pictorial Presentation:

Sample Solution-1:

Python Code:

#License: https://bit.ly/3oLErEI

def test(nums):
     return eval('*'.join([str(x % 10) for x in nums]))
 
nums = [12, 23]
print("Original list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [12, 23, 43]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [113, 234]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [1002, 2005]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))

Sample Output:

Original list of numbers:
[12, 23]
Product of the units digits in the numbers of the said:
6

Original list of numbers:
[12, 23, 43]
Product of the units digits in the numbers of the said:
18

Original list of numbers:
[113, 234]
Product of the units digits in the numbers of the said:
12

Original list of numbers:
[1002, 2005]
Product of the units digits in the numbers of the said:
10

Flowchart:

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Sample Solution-2:

Python Code:

#License: https://bit.ly/3oLErEI

def test(nums):
    prod = 1
    for n in nums:
        prod *= abs(n % 10)
    return prod
 
nums = [12, 23]
print("Original list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [12, 23, 43]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [113, 234]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))
nums = [1002, 2005]
print("\nOriginal list of numbers:")
print(nums)
print("Product of the units digits in the numbers of the said:")
print(test(nums))

Sample Output:

Original list of numbers:
[12, 23]
Product of the units digits in the numbers of the said:
6

Original list of numbers:
[12, 23, 43]
Product of the units digits in the numbers of the said:
18

Original list of numbers:
[113, 234]
Product of the units digits in the numbers of the said:
12

Original list of numbers:
[1002, 2005]
Product of the units digits in the numbers of the said:
10

Flowchart:

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor :

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