Sourav Dey
LeetCode Question - 1710. Maximum Units on a Truck 🚛

LeetCode Question - 1710. Maximum Units on a Truck 🚛

1st July 2022 | 🗓 Daily LeetCode Challenge - #1

3 min read01 Jul, 2022

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LeetCode Question - 1710. Maximum Units on a Truck 🚛

About the Series

Problem-solving is a key skill set for any tech-related stuff you might be working on.

When it comes to developers it's one of the most crucial skills which is needed in almost any day-to-day code you might be writing.

So, this series of blogs is all about practicing Daily LeetCode Challenges & Problem-solving. 🚀

Problem Statement

Maximum Units on a Truck 🚛

You are assigned to put some amount of boxes onto one truck. You are given a 2D array boxTypes, where boxTypes[i] = [numberOfBoxesi, numberOfUnitsPerBoxi]:

  • numberOfBoxes is the number of boxes of type i.
  • numberOfUnitsPerBox is the number of units in each box of type i. You are also given an integer truckSize, which is the maximum number of boxes that can be put on the truck. You can choose any boxes to put on the truck as long as the number of boxes does not exceed truckSize.

Return the maximum total number of units that can be put on the truck.

Video Explanation



Code 🧑‍💻

var maximumUnits = function (boxTypes, truckSize) {
  boxTypes.sort((a, b) => b[1] - a[1]);
  var maxTotal = 0;
  var i = 0;
  while (truckSize > 0 && i < boxTypes.length) {
    const numOfBoxes = boxTypes[i][0];
    const numOfUnits = boxTypes[i][1];
    if (truckSize <= numOfBoxes) {
      maxTotal += truckSize * numOfUnits;
      truckSize = 0;
    } else {
      maxTotal += numOfBoxes * numOfUnits;
      truckSize -= numOfBoxes;
  return maxTotal;

Time Complexity : O(nlogn)+O(n) = O(nlogn)

Space Complexity: O(1)

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