Answers for "fin which number is repeated in array javascript"

javascript check if array has duplicates

function hasDuplicates(array) {
    return (new Set(array)).size !== array.length;
}

Posted by: Guest on July-28-2020

duplicate numbers in an array javascript

[1, 1, 2, 2, 3].filter((element, index, array) => array.indexOf(element) !== index) // [1, 2]

Posted by: Guest on November-10-2020

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