﻿ Python: Single digits in numbers sorted backwards and converted to English words - w3resource

# Python: Single digits in numbers sorted backwards and converted to English words

## Python Programming Puzzles: Exercise-96 with Solution

Write a Python program to get the single digits in numbers sorted backwards and converted into English words.

```Input:
[1, 3, 4, 5, 11]
Output:
['five', 'four', 'three', 'one']

Input:
[27, 3, 8, 5, 1, 31]
Output:
['eight', 'five', 'three', 'one']
```

Visual Presentation:

Sample Solution:

Python Code:

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

# Function to convert single-digit numbers in a list to English words,
# sort them backwards, and return the result
def test(nums):
# Dictionary mapping English words to their corresponding digits
digits = {
"zero": None,
"one": 1,
"two": 2,
"three": 3,
"four": 4,
"five": 5,
"six": 6,
"seven": 7,
"eight": 8,
"nine": 9
}

# Create a reverse dictionary mapping digits to their corresponding English words
digits_backwards = {digits[k]: k for k in digits}

# Convert the original dictionary values to a list
digits = [digits[s] for s in digits]

# Extract single-digit numbers from the input list and convert them to English words
li = [digits[n] for n in nums if n in digits]

# Return the sorted list of English words corresponding to the digits
return [digits_backwards[n] for n in sorted(li, reverse=True)]

# Test cases with different lists of numbers
nums = [1, 3, 4, 5, 11]
print("Original list of numbers:")
print(nums)
print("Return the single digits in nums sorted backwards and converted to English words:")
print(test(nums))

nums = [27, 3, 8, 5, 1, 31]
print("\nOriginal list of numbers:")
print(nums)
print("Return the single digits in nums sorted backwards and converted to English words:")
print(test(nums))
``````

Sample Output:

```Original list of numbers:
[1, 3, 4, 5, 11]
Return the single digits in nums sorted backwards and converted to English words:
['five', 'four', 'three', 'one']

Original list of numbers:
[27, 3, 8, 5, 1, 31]
Return the single digits in nums sorted backwards and converted to English words:
['eight', 'five', 'three', 'one']
```

Flowchart:

Python Code Editor :

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