First N even, descending. Given an integer N, display all even numbers from N to 0 in descending order
|
|
n = int(input()) if n % 2 == 1: n -= 1 for i in range(n, -1, -2): print(i) |
or
|
|
N = int(input()) for number in range(N, -1, -1): if number % 2 == 0: print(number) |
- Reading Input:
- The
input() function reads a line of text from the user.
- The
int() function converts the input text to an integer and stores it in the variable N.
- For Loop:
for number in range(N, -1, -1):
- A
for loop iterates over the range from N to 0 (inclusive) in steps of -1, effectively counting down.
- Even Number Check:
- Inside the loop, each number is checked to see if it is even using the modulus operator
%.
- If the number is even (i.e.,
number % 2 is equal to 0), it is printed.