如何使用循环来增加一项并减少第二项

Question

我想获得以下结果：如果速度增加一gasLiter，则减少0.25。有人可以帮忙吗？这是我的代码，我有：

public class Gas extends Car{

    public Gas (String wheels, String frame, double engine, int maxSpeed) {
        super (wheels, frame, engine, maxSpeed);

        for (int speed = 0; speed<maxSpeed; speed++) {
            for (double gasLiter= 60; gasLiter <60; gasLiter-=0.25){

Answer 1

您需要一个循环：

double gasLiter = 60;
for (int speed = 0; speed < 800; speed++, gasLiter-=0.25) {

}

您还可以添加第二个停止条件：

double gasLiter = 60;
for (int speed = 0; speed < 800 && gasLiter >= 0; speed++, gasLiter-=0.25) {

}

我认为您原来的gasLiter < 60条件是一个错误。

Answer 2

    for (int speed = 0; double gasLiter = 60; speed < maxSpeed; gasLiter>0; speed++, gasLiter-=0.25) {
            // your code 
}

Answer 3

@Eran已解决问题，但您还可以添加条件，以在没有更多气体可用时停止：

double gasLiter = 60;
for (int speed = 0; speed < 800 && gasLiter > 0; speed++, gasLiter-=0.25) {
   // ^ initial conditions;     ^ end conditions ; ^ increment speed, decrement gas   
}

Answer 4

您可以添加一个检查气体是否达到0.0。

int maxSpeed = 200;
double gasLiter = 60;

for (int speed = 0; speed < maxSpeed; speed++) {
    gasLiter -= 0.25;
}