Caesar Cipher problem in python

A Caesar cipher is a simple substitution cipher in which each letter of the plain text is substituted with a letter found by moving n places down the alphabet. For example, assume the input plain text is the following: If the shift value, n, is 4, then the encrypted text would be the following: You are to write … Read more

How to reverse a String in Java?

It might be surprising, but there is no reverse() utility method in the String class. But, it’s a very simple task. We can create a character array from the string and then iterate it from the end to start. We can append the characters to a string builder and finally return the reversed string. public … Read more