meeting.md

Meeting ^{6 Kyu}

^{LINK TO THE KATA - FUNDAMENTALS}

Description

John has invited some friends. His list is:

str = "Fred:Corwill;Wilfred:Corwill;Barney:Tornbull;Betty:Tornbull;Bjon:Tornbull;Raphael:Corwill;Alfred:Corwill";

Could you make a program that

• makes this string uppercase
• gives it sorted in alphabetical order by last name.

When the last names are the same, sort them by first name. Last name and first name of a guest come in the result between parentheses separated by a comma.

So the result of function meeting(str) will be:

"(CORWILL, ALFRED)(CORWILL, FRED)(CORWILL, RAPHAEL)(CORWILL, WILFRED)(TORNBULL, BARNEY)(TORNBULL, BETTY)(TORNBULL, BJON)"

It can happen that in two distinct families with the same family name two people have the same first name too.

Solution

const meeting = str => {
  return str
    .toUpperCase()
    .split(';')
    .map(name => {
      let [firstName, lastName] = name.split(':')
      return `(${lastName}, ${firstName})`
    })
    .sort()
    .join('')
}