A happy ticket is a ticket with such a serial number that the sum of the first three digits is the same as the sume of the last three digits.
For example, ticket number 385916 is a happy ticket, since 3 + 8 + 5 = 9 + 1 + 6
Implement and export as default a function that verifies the happiness of a ticket. This function should return
true if the ticket is happy, and
isHappyTicket(385916); // true isHappyTicket(231002); // false isHappyTicket(128722); // true
Convert a number to string using
String like so:
String(1234); // "1234"
Convert a string back into a number using
Number like so:
Number("456"); // 456
length value to find out the length of a string:
'welcome'.length; // 7
Use the substr method to get a substring:
'foo'.substr(1, 2); // 'oo';
For full access to the challenge you need a professional subscription.
A professional subscription will give you full access to all Hexlet courses, the opportunity to seek help from mentors and lifetime access to the theory of lessons learned. You can cancel your subscription at any time.