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<p>假设我有四个多维数组-</p>
<pre><code>a = [["a","a","a"],
["a","a","a"],
["a","a","a"]]
b = [["b","b","b"],
["b","b","b"],
["b","b","b"]]
c = [["c","c","c"],
["c","c","c"],
["c","c","c"]]
d = [["d","d","d"],
["d","d","d"],
["d","d","d"]]
</code></pre>
<p>我想把它们组合成一个数组</p>
<pre><code>total = [["a","a","a","b","b","b"],
["a","a","a","b","b","b"],
["a","a","a","b","b","b"],
["c","c","c","d","d","d"],
["c","c","c","d","d","d"],
["c","c","c","d","d","d"]]
</code></pre>
<p>我该怎么做?你知道吗</p>
<p><em>我这样做是为了生成spelunky风格的地图</em></p>