Python: Reorder numbers in increasing/decreasing order based on whether the first plus last element is even/odd
Python Programming Puzzles: Exercise-75 with Solution
Reorder Numbers Based on Sum
Write a Python program to reorder numbers from a given array in increasing/decreasing order based on whether the first plus last element is odd/even.
Input: [3, 7, 4] Output: [3, 4, 7] Input: [2, 7, 4] Output: [7, 4, 2] Input: [1, 5, 6, 7, 4, 2, 8] Output: [1, 2, 4, 5, 6, 7, 8] Input: [1, 5, 6, 7, 4, 2, 9] Output: [9, 7, 6, 5, 4, 2, 1]
Visual Presentation:
Sample Solution:
Python Code:
# License: https://bit.ly/3oLErEI
# Define a function named 'test' that takes a list of numbers as input
def test(nums):
# Use the sorted function to reorder the numbers based on whether the sum of the first and last element is odd/even
return sorted(nums, reverse=(False if (nums[0] + nums[-1]) % 2 else True))
# Print a message indicating the purpose of the code
print("Reorder numbers of a given array in increasing/decreasing order based on whether the first plus last element is odd/even.")
# Example 1
nums1 = [3, 7, 4]
print("\nList of numbers:", nums1)
print("Result:")
print(test(nums1))
# Example 2
nums2 = [2, 7, 4]
print("\nList of numbers:", nums2)
print("Result:")
print(test(nums2))
# Example 3
nums3 = [1, 5, 6, 7, 4, 2, 8]
print("\nList of numbers:", nums3)
print("Result:")
print(test(nums3))
# Example 4
nums4 = [1, 5, 6, 7, 4, 2, 9]
print("\nList of numbers:", nums4)
print("Result:")
print(test(nums4))
Sample Output:
Reorder numbers of a give array in increasing/decreasing order based on whether the first plus last element is odd/even.: List of numbers: [3, 7, 4] Result: [3, 4, 7] List of numbers: [2, 7, 4] Result: [7, 4, 2] List of numbers: [1, 5, 6, 7, 4, 2, 8] Result: [1, 2, 4, 5, 6, 7, 8] List of numbers: [1, 5, 6, 7, 4, 2, 9] Result: [9, 7, 6, 5, 4, 2, 1]
Flowchart:
Python Code Editor :
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous: Find a string consisting of space-separated characters with given counts.
Next: Find the index of the largest prime in the list and the sum of its digits.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.
https://www.w3resource.com/python-exercises/puzzles/python-programming-puzzles-75.php
- Weekly Trends and Language Statistics
- Weekly Trends and Language Statistics