凱撒密碼

 indata = 'ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ'

outdata = indata[3:29]

print(outdata)

rd = {}

for i in range(26):

    rd[indata[i]] = outdata[i]

print(rd)

a = 'HELLO'

for i in a:

    print(rd[i],end='')