Final Prices With a Special Discount in a Shop LeetCode solution in JavaScript

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var finalPrices = function (prices) {
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  let adjPrices = [];
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  while (prices.length) {
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    let currentPrice = prices[0];
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    // Remove first price in original array
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    // Since we're looking for a price less than or equal to
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    prices.shift();
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    let lowerPrice = prices.find((a) => a <= currentPrice);
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    adjPrices.push(lowerPrice ? currentPrice - lowerPrice : currentPrice);
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  }
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  return adjPrices;
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};