blocks|key|4557460|text|要只删除最后一个元素，请使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4557461|newDeck+=+newDeck.Take(newDeck.Count()+-+1).ToArray();|code-block|syntax|javascript|4557462|您的解决方案将移除与最后一个元素相等的所有元素。对于字符串，这意味着它将删除所有等于A的元素|offset|length|style|CODE|4557463|entityMap^0|0|0|16|1|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

To remove just the last element use this:

<pre><code>newDeck = newDeck.Take(newDeck.Count() - 1).ToArray();
</code></pre>

Your solution removes all Elements that are equal to the last element. For a string, this means, it removes all elements equal to <code>A</code>

blocks|key|50941|text|@Flat+Eric解释了为什么你的解决方案不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|50942|下面是删除最后一个元素的替代方法：|50943|newDeck+=+newDeck.Reverse().Skip(1).Reverse().ToArray();|code-block|syntax|javascript|50944|澄清：|50945|[a,+b,+c]+=>+Reverse+=>+[c,+b,+a]+=>+Skip(1)+=>+[b,+a]+=>+Reverse()+=>+[a,+b]|50946|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

@Flat Eric explained why your solution is not working.

Here is alternate for removing last element:

<pre><code>newDeck = newDeck.Reverse().Skip(1).Reverse().ToArray();
</code></pre>

Clarification: 

<pre><code>[a, b, c] =&gt; Reverse =&gt; [c, b, a] =&gt; Skip(1) =&gt; [b, a] =&gt; Reverse() =&gt; [a, b]
</code></pre>

blocks|key|4557611|text|您可以使用Array类来调整大小：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4557612|Array.Resize(ref+result,+result.Length+-+1);|code-block|syntax|javascript|4557613|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/system.array(v=vs.110).aspx^0|5|5|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You can use <a href="https://msdn.microsoft.com/en-us/library/system.array(v=vs.110).aspx" rel="noreferrer">Array</a> class to resize:

<pre><code>Array.Resize(ref result, result.Length - 1);
</code></pre>

blocks|key|51016|text|这应该会删除Array的最后一个元素：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|51017|Array.Resize(ref+newDeck,+newDeck.Length+-+1);|code-block|syntax|javascript|51018|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This should remove the last element of your Array:

<pre><code>Array.Resize(ref newDeck, newDeck.Length - 1);
</code></pre>

blocks|key|4557697|text|如果您使用的是C#+8.0+(与.net+3.0一起发布)或更高版本，那么删除数组的最后一项很容易。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4557698|通过组合使用"hat"+%5E运算符和range+..运算符，可以删除最后一项：|4557699|newDeck+=+newDeck[..%5E1];++//+all+items+in+the+array+except+the+last|code-block|syntax|javascript|4557700|4557701|%5E和..的其他一些示例|4557702|var+lastItem+++=+newDeck[%5E1];++++//+last+item+in+array
var+allItems+++=+newDeck[..];++++//+all+items
var+skipTwo++++=+newDeck[2..];+++//+all+items+except+the+first+2+items
var+innerItems+=+newDeck[1..%5E1]++//+all+items+except+the+first+and+last|4557703|Online+demo|4557704|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/ranges#systemindex|1|https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/ranges#systemrange|2|https://dotnetfiddle.net/IdSCYR^0|7|6|G|8|0|C|1|N|2|6|5|0|H|5|1|0|0|0|0|1|2|2|0|0|0|B|2|0^^$0|@$1|2|3|4|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@$9|1F|A|1G|1|1H]|$9|1I|A|1J|1|1K]]|E|$]]|$1|H|3|I|5|J|7|1L|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1N|8|@$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|J|7|1S|8|@]|D|@]|E|$K|L]]|$1|R|3|S|5|6|7|1T|8|@]|D|@$9|1U|A|1V|1|1W]]|E|$]]|$1|T|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]]|U|$V|$5|W|X|Y|E|$Z|10]]|11|$5|W|X|Y|E|$Z|12]]|13|$5|W|X|Y|E|$Z|14]]]]

It's easy to remove the last item of an array if you're using <code>C# 8.0</code> (released with <code>.net 3.0</code>) or above.
You can remove the last item by combining the <a href="https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/ranges#systemindex" rel="nofollow noreferrer">&quot;hat&quot;</a> <code>^</code> operator with the <a href="https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/ranges#systemrange" rel="nofollow noreferrer">range</a> <code>..</code> operator:
<pre><code>newDeck = newDeck[..^1]; // all items in the array except the last
</code></pre>
<hr />
Some other examples of <code>^</code> and <code>..</code>:
<pre><code>var lastItem = newDeck[^1]; // last item in array
var allItems = newDeck[..]; // all items
var skipTwo = newDeck[2..]; // all items except the first 2 items
var innerItems = newDeck[1..^1] // all items except the first and last
</code></pre>
<a href="https://dotnetfiddle.net/IdSCYR" rel="nofollow noreferrer">Online demo</a>

I'm working on a simple blackjack game project. Firstly I create the array of cards:

<pre><code>string[] deck = { "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", };
</code></pre>

than I multiply it 4 and given <code>deckNumber</code>:

<pre><code>newDeck = Enumerable.Repeat(deck, deckNumber*4).SelectMany(x =&gt; x).ToArray();
</code></pre>

when I want to delete last card from array I apply this:

<pre><code>newDeck = newDeck.Where(w =&gt; w != newDeck.Last()).ToArray();
</code></pre>

so the problem is that code doesn't removes last item from array, acts like there are multiple arrays and removes all last elements from them. For example with one deck:

<pre><code>cards: 2 3 4 5 6 7 8 9 10 J Q K A 2 3 4 5 6 7 8 9 10 J Q K A 2 3 4 5 6 7 8 9 10 J Q K A 2 3 4 5 6 7 8 9 10 J Q K A 
</code></pre>

when I apply my remove command it become:

<pre><code>cards: 2 3 4 5 6 7 8 9 10 J Q K 2 3 4 5 6 7 8 9 10 J Q K 2 3 4 5 6 7 8 9 10 J Q K 2 3 4 5 6 7 8 9 10 J Q K 
</code></pre>

it removes all the A's from array. But I want to remove only the last item from whole array. Whats the problem how can I solve this?

Deleting Last Item from Array of String

我正在做一个简单的二十一点游戏项目。首先，我创建了卡片数组：string[] deck = { "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", };然后我将它乘以4并给出deckNumbernewDeck = Enumerable.Re...

问从字符串数组中删除最后一项
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