String is traditionally a sequence of characters, either as a literal constant or as some kind of variable. The latter may allow its elements to be mutated and the length changed, or it may be fixed (after creation).

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Parentheses in Codeland

John is a student at Codeland Primary School and he is in trouble with his homework and he needs your help. He tries to check validation of given parentheses. There are three types of opening and clo ...
Coder
Published on Nov 1st, 2017

Determine if two strings are anagram or not

Any word that exactly reproduces the letters in another order is an anagram. In other words, X and Y are anagrams if by rearranging the letters of X, we can get Y using all the original letters of X ...
Murat Sütunç
Published on Oct 13th, 2017

Check if given set of moves is circular or not

A rover is given instructions such as Move (M), Left (L) and Right (R). Check if given set of moves is circular or not. If circular return true, otherwise return false. The move is circular if its st ...
Murat Sütunç
Published on Oct 13th, 2017

Longest even length palindromic sum substring

Find the length of longest contiguous substring of a string, such that the length of the substring is 2 * N digits and the sum of the leftmost N digits is equal to the sum of the rightmost N digits. ...
Murat Sütunç
Published on Oct 13th, 2017

Validate an IP address

Write a solution to validate an IPv4 address. IPv4 addresses are canonically represented in dot-decimal notation, which consists of four decimal numbers, each ranging from 0 to 255, separated by dot ...
Murat Sütunç
Published on Oct 13th, 2017

Find all possible combinations of words formed from mobile keypad

The standard 12-key telephone keypad looks like the following: To write text using the keypad you have to press the number keys. For example, to write X press the key 9 twice. Given a sequence of nu ...
Murat Sütunç
Published on Oct 13th, 2017