**解析:**Version 1,贪心算法,优先往车上放装东西多的盒子。
class Solution:
def maximumUnits(self, boxTypes: List[List[int]], truckSize: int) -> int:
count = 0
boxTypes.sort(key=lambda x: x[1], reverse=True)
i = 0
while truckSize > 0 and i < len(boxTypes):
if truckSize - boxTypes[i][0] > 0:
truckSize -= boxTypes[i][0]
count += boxTypes[i][0] * boxTypes[i][1]
else:
count += truckSize * boxTypes[i][1]
truckSize = 0
i += 1
return count