mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-11-04 11:43:12 +08:00
49 lines
2.0 KiB
HTML
49 lines
2.0 KiB
HTML
<p>A <strong>swap</strong> is defined as taking two <strong>distinct</strong> positions in an array and swapping the values in them.</p>
|
|
|
|
<p>A <strong>circular</strong> array is defined as an array where we consider the <strong>first</strong> element and the <strong>last</strong> element to be <strong>adjacent</strong>.</p>
|
|
|
|
<p>Given a <strong>binary</strong> <strong>circular</strong> array <code>nums</code>, return <em>the minimum number of swaps required to group all </em><code>1</code><em>'s present in the array together at <strong>any location</strong></em>.</p>
|
|
|
|
<p> </p>
|
|
<p><strong class="example">Example 1:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> nums = [0,1,0,1,1,0,0]
|
|
<strong>Output:</strong> 1
|
|
<strong>Explanation:</strong> Here are a few of the ways to group all the 1's together:
|
|
[0,<u>0</u>,<u>1</u>,1,1,0,0] using 1 swap.
|
|
[0,1,<u>1</u>,1,<u>0</u>,0,0] using 1 swap.
|
|
[1,1,0,0,0,0,1] using 2 swaps (using the circular property of the array).
|
|
There is no way to group all 1's together with 0 swaps.
|
|
Thus, the minimum number of swaps required is 1.
|
|
</pre>
|
|
|
|
<p><strong class="example">Example 2:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> nums = [0,1,1,1,0,0,1,1,0]
|
|
<strong>Output:</strong> 2
|
|
<strong>Explanation:</strong> Here are a few of the ways to group all the 1's together:
|
|
[1,1,1,0,0,0,0,1,1] using 2 swaps (using the circular property of the array).
|
|
[1,1,1,1,1,0,0,0,0] using 2 swaps.
|
|
There is no way to group all 1's together with 0 or 1 swaps.
|
|
Thus, the minimum number of swaps required is 2.
|
|
</pre>
|
|
|
|
<p><strong class="example">Example 3:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> nums = [1,1,0,0,1]
|
|
<strong>Output:</strong> 0
|
|
<strong>Explanation:</strong> All the 1's are already grouped together due to the circular property of the array.
|
|
Thus, the minimum number of swaps required is 0.
|
|
</pre>
|
|
|
|
<p> </p>
|
|
<p><strong>Constraints:</strong></p>
|
|
|
|
<ul>
|
|
<li><code>1 <= nums.length <= 10<sup>5</sup></code></li>
|
|
<li><code>nums[i]</code> is either <code>0</code> or <code>1</code>.</li>
|
|
</ul>
|