ENH: Enhanced the problem set building on the image handing and arrays.
Illustrated dtypes, casting and their importance along with an example
using RGBA images. Also introduce edge detection.
# Armstrong Numbers
for n in range(100, 1000):
# s = str(n)
# a, b, c = int(s[0]), int(s[1]), int(s[2])
# if a * a * a + b * b * b + c * c * c == n:
# print n
# sum, copy = 0, n
# while copy > 0:
# sum += (copy % 10) ** 3
# copy /= 10
# if sum == n:
# print n
u = n % 10
h = n / 100
t = (n/10) % 10
if h ** 3 + t ** 3 + u ** 3 == N:
print n