算法1
(暴力枚举) $O(1)$
模拟
时间复杂度
参考文献
C++ 代码
class Solution {
public:
int accountBalanceAfterPurchase(int purchaseAmount) {
if(purchaseAmount%10 >= 5) purchaseAmount = (purchaseAmount/10+1)*10;
else purchaseAmount = purchaseAmount/10*10;
return 100-purchaseAmount;
}
};