Question

基本上，1.26美元如何变成：

Dollars: 1
Quarters: 1
Pennies: 1

谢谢！编辑剩余部分的标题而不是模数运算符

int change = (int)(changeDue*100);

int dollars = (int)(change/100);
change=change%100;
int quarters = (int)(change/25);
change=change%25;
int pennies = (int)(change/1);
change=change%1

System.out.println("Dollars: " + dollars);
System.out.println("Quarters: " + quarters);
System.out.println("Pennies: " + pennies);

Answer 1

对于每个面额，你需要进行整数除法，然后模数：

整数除法忽略了一个除法的提醒，例如100分之126= 1
Modulo仅返回分组的提醒，例如126％100 = 26

所以126美分需要1美元。并对每个较小面额的提醒值重复相同的事情。对于季度，您将得到26/25 = 1季度，提醒是26％1，这是1 ...你明白了。

Answer 2

模运算给出了除法的余数。％-operation a % m中的值始终从0到m - 1。

change=change%100; // divides by 100 and leaves the remainder which is less than a dollar
change=change%25; // divides by 25 and leaves the remainder which is less than a quarter
change=change%10; // divides by 10 and leaves the remainder which is less than a dime
change=change%5; // divides by 5 and leaves the remainder which is less than a nickel
change=change%1 // this operation is always 0 because an integer can always be divided by 1 without a remainder

java中的多个余数如何在一系列中工作？

2 个答案: