java菜鸟求助 这题用编程怎么做？

Question

如题所述

Answer 1

将电量定义一个参数 int a
public static double add(int a) {
double price;
if(a >= 0 && a <= 90) {
price = a*0.5;
}else if(a >= 91 && a < 150 ) {
price =a*0.65;
}else {
price = a*0.75;
}
return price;
}本回答被网友采纳

Answer 2

int num = 100;//输入的电量
int money = 0;//价格
if(num <= 90){
money = num * 0.5;
}else if(num <= 150){
money = (90 * 0.5) + ((num - 90) * 0.65);
}else if(num > 150){
money = (90 * 0.5) + (60 * 0.65) + ((num - 150) * 0.75);
}