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java script Write a function `popular(str)` that takes a string as an argument and returns an array of all of the characters that appear 4
java script
Write a function `popular(str)` that takes a
string as an argument and returns an array of all of the characters that appear
4 or more times in the string.
Examples:
console.log(popular('pear')); // []
console.log(popular('bananas as marcg')); // [ 'a' ]
console.log(popular('Yes, we have no bananas,or do we have no bananas today!')); // [ 'e', ' ', 'a', 'n' ]
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