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How to use ROT13 in JavaScript?
Create a function that takes a string and returns the string with each letter substituted with the 13th letter after it in the alphabet (ROT13). If there are numbers or special characters included in the string, they should be returned as they are.
What is ROT13 cipher?
ROT13 (“rotate by 13 places”, sometimes hyphenated ROT-13) is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the alphabet. ROT13 is used in online forums as a means of hiding spoilers, punchlines, puzzle solutions, and offensive materials from the casual glance.
What is Enctype ROT13?
Tool to decrypt/encrypt with rot13. ROT-13 cipher is a particular case of the Caesar cipher, where the shift is equal to 13, this allow the cipher to be reciprocal.
What is indexOf JavaScript?
The JavaScript indexOf() method returns the position of an item in a list or a substring in a string. The indexOf() method returns the first index at which a certain value can be found in an array or a string. If a value is not found, a special -1 value is returned.
How do you do ROT13?
ROT13 = Rotate the string to be encrypted by 13 positions (modulo 26) in the alphabet of 26 characters. If you want to encrypt a string, shift each character forwards by 13 positions in the alphabet. If you move past the last character “z”, you start over at the first position in the alphabet “a”.
What are JavaScript characters?
A JavaScript identifier must start with a letter, underscore ( _ ), or dollar sign ( $ ). Subsequent characters can also be digits ( 0 – 9 ). Because JavaScript is case sensitive, letters include the characters ” A ” through ” Z ” (uppercase) as well as ” a ” through ” z ” (lowercase).
How do I use ROT13?
How many possible keys exist for a rotation cipher?
It is so much fun. 4. How many possible keys exist for a rotation cipher? There are 25 possible keys for a rotation cipher.
Where is my implementation of ROT13 in JavaScript going?
There is still room for enhancement, checking (c<=”Z”) is actually a check against the codepoint (that we need later on), following that idea gives us a win ! In nodejs, you can use Buffer to cast/serialize codepoints, e.g. : My golfed version is 82 bytes long (vs. Ben Albert, which is 35% heavier, but inspired mine):
What do you need to know about ROT13?
A ROT13 means each letter substituted with the 13th letter after it in the alphabet Create a function that takes a string and returns the string with each letter substituted with the 13th letter after it in the alphabet (ROT13). If there are numbers or special characters included in the string, they should be returned as they are.
Can a ROT13 cipher script be improved?
I wrote a ROT13 cipher script rotating uppercase letters only. Can this function be improved? The mapping is so simple, I prefer to do a more literal implementation of the wiki explanation: If it’s a non-letter, don’t translate it. If it’s a letter, translate it by mapping its physical position in the input to its physical position in the output.
How to instantly share ROT13 code on GitHub?
Instantly share code, notes, and snippets. function rot13(str) { // LBH QVQ VG! result += (re.test(str[i]) ? This comment has been minimized. This comment has been minimized. This comment has been minimized. Sign up for free to join this conversation on GitHub .