soulflysimple123

PC 可以配置到 12600k +64g ddr4 +2t nvme ssd ，后期可以看行情再加显卡

时间还可以不是整数 ，疏忽了 ，改了下提示：结果是 19.6

import org.apache.commons.math3.fraction.Fraction;

public class WaterPool {

public static void main(String[] args) {
Fraction capacity = new Fraction(1, 1);
Fraction current = Fraction.ZERO;
// 甲、乙、丙的流量分别是 1/5 、1/6 、-1/4
Fraction[] flows = {
new Fraction(1, 5),
new Fraction(1, 6),
new Fraction(-1, 4)
};

int completeHours = 0;
while (current.compareTo(capacity) < 0) {
int index = completeHours % 3;
Fraction rate = flows[index];

// 计算当前水管需要多少时间才能刚好注满
if (rate.compareTo(Fraction.ZERO) > 0) { // 进水管
Fraction timeToFill = capacity.subtract(current).divide(rate);
// 如果需要的时间不超过 1 小时，那么就找到精确时间了
if (timeToFill.compareTo(Fraction.ONE) <= 0) {
System.out.println("最终结果: " + (completeHours + timeToFill.doubleValue()) + " 小时");
return;
}
}
// 否则，完成一个完整小时
current = current.add(rate);
completeHours++;
// 如果水量变为负，重置为 0
if (current.compareTo(Fraction.ZERO) < 0) {
current = Fraction.ZERO;
}
}

System.out.println("需要整数小时数: " + completeHours + " 小时");
}
}

1/6 转为浮点有精度丢失，改为 apache 的 Fraction 类

import org.apache.commons.math3.fraction.Fraction;

public class WaterPoolRecalc {
public static void main(String[] args) {
Fraction capacity = new Fraction(1, 1);
Fraction current = Fraction.ZERO;
// 甲、乙、丙的流量分别是 1/5 、1/6 、-1/4
Fraction[] flows = {
new Fraction(1, 5),
new Fraction(1, 6),
new Fraction(-1, 4)
};

int hours = 0;
while (current.compareTo(capacity) < 0) {
current = current.add(flows[hours % 3]);
hours++;
// 如果水量小于 0 则重置
if (current.compareTo(Fraction.ZERO) < 0) {
current = Fraction.ZERO;
}
}

System.out.println("需要的小时数：" + hours); // 输出 20
}
}

public class WaterPool {
public static void main(String[] args) {
double capacity = 1.0; // 代表满池
double current = 0.0; // 当前水量
double[] rates = {1.0/5.0, 1.0/6.0, -1.0/4.0}; // 甲、乙、丙每小时进出水比例
int hour = 0;

// 每小时轮流开甲、乙、丙水管
while (current < capacity) {
// 计算当前水管索引
int index = hour % rates.length;
current += rates[index];
hour++;
if (current >= capacity) break;
if (current < 0) current = 0; // 防止出现负值
}

System.out.println("需要的小时数: " + hour);
}
} 结果是 20

我用的燃气热水器，温度设置 43 度，从来不用调整

github copilot 要 Copilot Enterprise 才能用 gpt 4.5,pro 用户还用不了

github copilot