Minimum Sum of Four Digit Number After Splitting Digits LeetCode solution in JavaScript

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var minimumSum = function (num) {
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  let numbers = [];
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  for (let i = 0; i < 4; i++) {
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    numbers.push(~~num % 10);
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    num /= 10;
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  }
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  const sorted = numbers.sort((a, b) => b - a);
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  return sorted[0] + sorted[1] + 10 * (sorted[2] + sorted[3]);
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};