A lucky number is a number that gives 1 by repeatedly adding the square of its digits. If such a process results in an endless cycle of numbers containing 4, that number is said to be an unlucky number. Create a function that accepts a number and determines whether the number is lucky or not. If so, return true, otherwise false. Examples isHappy (67) → false isHappy (89) false isHappy (2871) → false isHappy (3970) → true Solution in JS

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