Answer to Question #230262 in Python for Anilkumar Dakarapu

Question

in the above case only armstrong numbers can be printed.For,Example consider the two number that is "A" value should be 10 and "B" value should be 15. There is no armstrong number between these two intervals so we need to print a"-1".but the output should be shown empty value.how could we print -1 please explain that code

Answer 1

A = int(input())
B = int(input())

def is_armstrong(x):
    degree = len(str(x))
    _sum = 0
    for i in str(x):
        _sum += int(i)**degree
    if _sum == x:
        return True
    return False

# flag to output -1 if there are no armstrong numbers    
is_armstrong_exist = False  
for i in range(A, B + 1):
    if is_armstrong(i):
        is_armstrong_exist = True
        print(i)
        
if not is_armstrong_exist:
    print(-1)