
sequenceElement
Consider an infinite sequence a of decimal digits which is generated using the following algorithm: the first…
removeDuplicateCharacters
Remove all characters from a given string that appear more than once in it. Example…
alphanumericLess
An alphanumeric ordering of strings is defined as follows: each string is considered as a sequence of…
reverseInParentheses
Write a function that reverses characters in (possibly nested) parentheses in the input string. Input…
isIPv4Address
IPv4 address is a string with the following structure: a.b.c.d, where a, b, c and dare integers in range [0, 255]. For…
messageFromBinaryCode
You are taking part in an Escape Room challenge designed specifically for programmers. In your…