loops - 一次遍历对象的集合n

Question

我是一个自学成才的新手程序员，我觉得这是一个非常基本的问题，如果我真的学习过计算机科学，那么我将能够回答该问题:P在搜索intertrons和StackOverflow时，我还没有'找不到我要找的答案。所以我希望有人可以放纵我。

我有一些 object 。我想一次对它们进行五个操作，然后继续进行下五个操作。上下文正在重新引导一堆VM。我被要求将它们错开，以免主机被立即重新引导的所有VM所撞击。

我感觉到正确的路径在某种程度上是for i循环，而不是foreach。我也觉得这可能是do-until和for i的组合，但我无法从脑中筛选出答案。

我可能可以通过从集合中删除对象来做到这一点，但这听起来像是“错误”的方式，即使它可以工作。

我正在使用Powershell和PowerCLI进行此操作，但是我觉得我试图理解的逻辑比依赖于任何语言更基本，因此，即使您不熟悉Powershell，我也会对您感兴趣回答。

编辑:根据下面的大卫的答案，以下代码似乎是我正在寻找:

$someLetters = @("a","b","c","d","e","f","g","h","i","j","k")

for($i=0; $i -lt $someLetters.length; $i+=5)
{
    Write-Host ("the letter is " + $someLetters[$i] + " and i is " + $i)
    Write-Host ("the letter is " + $someLetters[$i+1] + " and i is " + $i)
    Write-Host ("the letter is " + $someLetters[$i+2] + " and i is " + $i)
    Write-Host ("the letter is " + $someLetters[$i+3] + " and i is " + $i)
    Write-Host ("the letter is " + $someLetters[$i+4] + " and i is " + $i)
    write-host "finished block of five"
}

给出输出:

the letter is a and i is 0
the letter is b and i is 0
the letter is c and i is 0
the letter is d and i is 0
the letter is e and i is 0
finished block of five
the letter is f and i is 5
the letter is g and i is 5
the letter is h and i is 5
the letter is i and i is 5
the letter is j and i is 5
finished block of five
the letter is k and i is 10
the letter is  and i is 10
the letter is  and i is 10
the letter is  and i is 10
the letter is  and i is 10
finished block of five

谢谢大卫!

Answer 1

您没有说对象在哪种容器中。我假设它是一个数组。因此，您可以执行以下操作:

for($i=0; $i -lt $objectArray.length; $i+=5)
{
    #do something with $objectArray[$i]
}