小区便利店正在促销,用 numExchange
个空酒瓶可以兑换一瓶新酒。你购入了 numBottles
瓶酒。
如果喝掉了酒瓶中的酒,那么酒瓶就会变成空的。
请你计算 最多 能喝到多少瓶酒。
示例 1:
输入:numBottles = 9, numExchange = 3
输出:13
解释:你可以用 3
个空酒瓶兑换 1 瓶酒。
所以最多能喝到 9 + 3 + 1 = 13 瓶酒。
示例 2:
输入:numBottles = 15, numExchange = 4
输出:19
解释:你可以用 4
个空酒瓶兑换 1 瓶酒。
所以最多能喝到 15 + 3 + 1 = 19 瓶酒。
示例 3:
输入:numBottles = 5, numExchange = 5 输出:6
示例 4:
输入:numBottles = 2, numExchange = 3 输出:2
提示:
1 <= numBottles <= 100
2 <= numExchange <= 100
直接模拟空瓶兑新酒即可。
class Solution:
def numWaterBottles(self, numBottles: int, numExchange: int) -> int:
ans = numBottles
while numBottles >= numExchange:
numBottles -= (numExchange - 1)
ans += 1
return ans
class Solution {
public int numWaterBottles(int numBottles, int numExchange) {
int ans = numBottles;
while (numBottles >= numExchange) {
numBottles -= (numExchange - 1);
++ans;
}
return ans;
}
}
class Solution {
public:
int numWaterBottles(int numBottles, int numExchange) {
int ans = numBottles;
while (numBottles >= numExchange)
{
numBottles -= (numExchange - 1);
++ans;
}
return ans;
}
};
func numWaterBottles(numBottles int, numExchange int) int {
ans := numBottles
for numBottles >= numExchange {
numBottles -= (numExchange - 1)
ans++
}
return ans
}