[python][hackerrank] Beautiful Days at the Movies

일반적인 방법

i,j,k = [int(x) for x in input().strip().split(' ')]
cnt = 0
for n in range(i,j):
    diff = abs(n - int(str(n)[::-1])) % k
    if diff == 0:
        cnt += 1
print(cnt)

조금더 일반적인(?) 방법

def bueatiful_days2():
    i,j,k = [int(x) for x in input().strip().split(' ')]
    res = sum(1 for x in range(i,j) if abs(int(str(x)[::-1])-x) % k == 0)
    print(res)