Perfect number: Perfect number is a positive integer that is equal to the sum of its proper divisors.
The smallest perfect number is 6
, which is the sum of 1
, 2
, and 3
.
Some other perfect numbers are 28(1+2+4+7+14=28)
, 496
and 8128
.
Write a function that finds perfect numbers between 1
and 1000
.
Check perfect numbers between 1
and 1000
and find the sum of the perfect numbers using reduce and filter functions.
Write a function that outputs the transcription of an input number with two digits.
Example:
28---------------->Twenty Eight
Write a function that takes an input of different words with hyphen (-) in between them and then:
- sorts the words in alphabetical order,
- adds hyphen icon (-) between them,
- gives the output of the sorted words.
Example:
Input >>> green-red-yellow-black-white
Output >>> black-green-red-white-yellow
Write a function that filters all the unique(unrepeated) elements of a given list.
Example:
Function call: unique_list([1,2,3,3,3,3,4,5,5])
Output : [1, 2, 3, 4, 5]
Write a function that controls the given inputs whether they are equal to their reversed order or not.
Example:
Input >>> madam, tacocat, utrecht
Output >>> True, True, False