Checks if a specific exists in he list @return {@code true} if element exist, {@code false} otherwise

@return true if tree contains element

Checks if a specific exists in he list @return {@code true} if element exist, {@code false} otherwise

Checks for existing of a specific element in the list. @param element is element @return If element exists method returns true, otherwise it returns

Checks if there is at least one account with provided email domain. @param emailDomain @return true if there is an account that has an email with pro

Checks if the table contains a given key. @param key @return true is there is such key in the table or false otherwise

Checks if the table contains a given value. @param value @return true is there is such value in the table or false otherwise

@return max. number of transition between root node and any other node; 0 - if tree is empty or contains 1 element

Method encodeMessage accepts one {@link String} parameter and returns encoded {@link String}. <p> PLEASE NOTE THAT YOU WILL GET STUCK ON THIS METHOD I

A Pattern that finds only the following abbreviation: - AK, AL, AR, AZ, CA, CO, CT, PR, PA, PD @return a pattern that looks for the abbreviations abo

Returns a {@link List} of {@link Account} that have a birthday month equal to provided. @param birthdayMonth a month of birth @return a list of accou

Returns all stored flight numbers @return a set of flight numbers

A Pattern that finds all .com, .net and .edu emails @return a pattern that looks for all .com, .net and .edu emails

A Pattern that finds words and numbers with following constraints: - not shorter than two symbols - not longer than three symbols @return a pattern t

A Pattern that finds all numbers in text. When we have "555-555", "(555)555" and "30th" in text our pattern must grab all that numbers: "555" - four t

A Pattern that finds all open braces @return a pattern that looks for all open braces

A Pattern that finds the following examples of phone numbers: - 555-555-5555 - 555.555.5555 - (555)555-5555 @return a pattern that looks for phone

A Pattern that finds all words that begin with capital letter @return a pattern that looks for the words that begin with capital letter

A Pattern that finds all words in text that have length 5 @return a pattern that looks for the words that have length 5

A Pattern that finds all dates. For instance: "1971-11-23" @return a pattern that looks for dates

A Pattern that finds different variations of word "color". We are looking for: "color", "colour", "colors", "colours" @return a pattern that looks fo

A Pattern that finds different variations of word "link". We are looking for: "lynk", "link", "l nk", "l(nk" @return a pattern that looks for differe

A Pattern that finds first word in text @return a pattern that looks for the first word in text

A Pattern that finds last word in text @return a pattern that looks for the last word in text