Question

22.23 LAB 9 C FALL 2019: Countdown until matching digits

Write a program that takes in an integer in the range 20-98 as input. The output is a countdown starting from the integer, and stopping when both output digits are identical.

Ex: If the input is:

93

the output is:

93 92 91 90 89 88

Ex: If the input is:

77

the output is:

77

Ex: If the input is:

15

or any value not between 20 and 98 (inclusive), the output is:

Input must be 20-98

Answer 1

n = int(input())
if(n>=20 and n<=98):
    while(not(n%10==n//10)):
        print(n,end=' ')
        n-=1
    print(n)
else:
    print("Input must be 20-98")

Output

93 93 92 91 90 89 88