Question

vbs定义一个数组, 包含5个元素, 都是随机整数(随便输入), 要求把他们按照从大到小的顺序排列起来

dim num(4)
dim i,n,t
for i=0 to 4
num(i)=InputBox("输入随机数")
num(i)=int(num(i))
next
for i=0 to 3
for n=i to 4
if num(i)< num(n) then
t=num(i)
num(i)=num(n)
num(n)=t
End if
next
next
msgbox ("5个随机数为: " & num(0) & "," & num(1) & "," & num(2) & "," & num(3) & "," & num(4))

下面这段没看懂,网上看到是c的冒泡法

求解释一下

for i=0 to 3
for n=i to 4
if num(i)< num(n) then
t=num(i)
num(i)=num(n)
num(n)=t
End if
还有个问题,变量t是什么用的?

Answer 1

t 是临时变量，用于两变量交换时保存一个变量的值。因为一个变量或一个数组元素只能保存一个值，要交换时不用一个临时变量存放时怎么行？