小编ars*_*jii的帖子

我想打印输出4位数.

例如,使用16/2,输出应该是0008.

我该怎么做？

public class ComputePay
{
   /**
      Compute pay (including overtime) for worker. Hours in excess of 40 hours
      are paid at time-and-a-half.
      @param wage the hourly wage for the employee
      @param hoursWorked the number of hours worked by employee in one week
      @return the amount of pay employee earned
   */
 public static double payForWeek(double wage, double hoursWorked)
   {      
       double totalPay = 0.0;

              if (hoursWorked <= 40);
               {
                   totalPay = hoursWorked*wage;
               }
               else if(hoursWorked > 40);
                 {
                      totalPay = (40*wage+(wage*(hoursWorked-40)));
                  }
       return …

这两个类声明之间是否有任何差异

1:

class MyClass <T extends Number & Comparable>

2:

class MyClass <T extends Number & Comparable<T>>

我认为存在差异.但我找不到一个会显示差异的例子,因为我不完全理解.

你能告诉我这个例子吗？

当我在控制台中键入一个短语时,绿色文本下方只显示一个单词,而其他单词则不出现.不知道我在这里做错了什么.任何帮助,将不胜感激.

Scanner keyboard = new Scanner(System.in);

System.out.println("Enter a sentence or phrase. It can be anything you want it to be: ");

//ask user for sentence or phrase
String p1 = keyboard.next(); 

System.out.println(c1); //display user sentence or phrase

我正在尝试编写一个接受数组的函数,将其转换为字符串,然后将其附加在一起.

防爆.[1,2,3,4,5,6]会回来的'123456'.

这是我已经尝试过的代码,但它给出了错误"list indices必须是整数,而不是str"

a = [1,2,3,4,5,6,7,8,9,10]

def add_it_up(a,b):
    return a+b

def to_str(a):
    for i in a:
        a[i] = str(a[i])

    reduce(add_it_up, a)

a = [1,2,3,4,5,6,7,8,9,10]

def to_str(a):

    ''.join(map(str, l))
    return a

上面的代码有什么问题？它只是返回原始值.

只是想知道为什么几个";;" 在C#语句中,编译时不会抛出错误,例如

string todayDate = DateTime.Now.ToString(); ;;;;; ;