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leetcode-problemset/leetcode-cn/problem (Chinese)/通过翻转子数组使两个数组相等 [make-two-arrays-equal-by-reversing-sub-arrays].html
2022-03-29 12:43:11 +08:00

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<p>给你两个长度相同的整数数组&nbsp;<code>target</code>&nbsp;&nbsp;<code>arr</code>&nbsp;。每一步中,你可以选择&nbsp;<code>arr</code>&nbsp;的任意 <strong>非空子数组</strong>&nbsp;并将它翻转。你可以执行此过程任意次。</p>
<p><em>如果你能让 <code>arr</code>&nbsp;变得与 <code>target</code>&nbsp;相同,返回 True否则返回 False 。</em></p>
<p>&nbsp;</p>
<p><strong>示例 1</strong></p>
<pre>
<strong>输入:</strong>target = [1,2,3,4], arr = [2,4,1,3]
<strong>输出:</strong>true
<strong>解释:</strong>你可以按照如下步骤使 arr 变成 target
1- 翻转子数组 [2,4,1] arr 变成 [1,4,2,3]
2- 翻转子数组 [4,2] arr 变成 [1,2,4,3]
3- 翻转子数组 [4,3] arr 变成 [1,2,3,4]
上述方法并不是唯一的,还存在多种将 arr 变成 target 的方法。
</pre>
<p><strong>示例 2</strong></p>
<pre>
<strong>输入:</strong>target = [7], arr = [7]
<strong>输出:</strong>true
<strong>解释:</strong>arr 不需要做任何翻转已经与 target 相等。
</pre>
<p><strong>示例 3</strong></p>
<pre>
<strong>输入:</strong>target = [3,7,9], arr = [3,7,11]
<strong>输出:</strong>false
<strong>解释:</strong>arr 没有数字 9 ,所以无论如何也无法变成 target 。
</pre>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>target.length == arr.length</code></li>
<li><code>1 &lt;= target.length &lt;= 1000</code></li>
<li><code>1 &lt;= target[i] &lt;= 1000</code></li>
<li><code>1 &lt;= arr[i] &lt;= 1000</code></li>
</ul>