Caesar cipher related

Encrypt, decrypt, crack, and analyze the frequency of Caesar's password
Introduction to Caesar Password
The Caesar password, also known as the Caesar password, shift password, Caesar password, or Caesar shift, is a replacement password in which each letter in plaintext is replaced by some fixed position letters in the alphabet. For example, if left shifted by 3, D will be replaced by A, E will become B, and so on.
Usage Tips
The use of frequency analysis for Caesar cipher is suitable for natural texts with a larger number of words, but has no effect on non natural texts with fewer words.