VB使用升序选择排解释

2025-04-07 06:25:43
推荐回答(2个)
回答1:

前面和后面应该都看得懂吧,重点在排序这一部分代码:
for i=2 to 10
k=a(i)
for j=i-1 to 1 step-1
if knext j
a(j+1)=k
next i
i=2从数组的第二个元素开始,比较i之前的数字,如果有比a(i)小的,则做一个交换。就这样一个方法;
比如数组 4 3 2 1
第一次排序,发现3比4小,交换下,变成3 4 2 1
第二次排序,2再与 它前面的3 4比较,首先与3比较,2 比较小,排序是2 4 3 1
再次3又与4比较,3 比较小,排序2 3 4 1
第三次排序,1与它之前的2 3 4比较,
首先1比2小,排序后是1 3 4 2
再次2比3小,排序后是1 2 4 3
再次3比4小,排序后是1 2 3 4
就可以了。如果能看明白4 3 2 1的排序过程,就不难理解上述排序过程了。

回答2:

private sub command1_click()
'定义数组存储10个两位数-------------
dim a(1 to 10)as integer
print
print "原数列是"
'产生10个两位随机数,并存入数组------
randomize
for i=1 to 10
a(i)=int(rnd*90+10)
print a(i);" ";
next i
'排序----------------
for i=2 to 10
k=a(i)
for j=i-1 to 1 step-1
if knext j
a(j+1)=k
next i
'输出排序后的值
print
print "排列后的数列是:"
for i=1 to 10
print a(i);" ";
next i
end sub

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