Project Notes

Consecutive Numbers

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Description

tab: English
 
<p>Table: <code>Logs</code></p>
 
<pre>
+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| id          | int     |
| num         | varchar |
+-------------+---------+
In SQL, id is the primary key for this table.
id is an autoincrement column starting from 1.
</pre>
 
<p>&nbsp;</p>
 
<p>Find all numbers that appear at least three times consecutively.</p>
 
<p>Return the result table in <strong>any order</strong>.</p>
 
<p>The&nbsp;result format is in the following example.</p>
 
<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
 
<pre>
<strong>Input:</strong> 
Logs table:
+----+-----+
| id | num |
+----+-----+
| 1  | 1   |
| 2  | 1   |
| 3  | 1   |
| 4  | 2   |
| 5  | 1   |
| 6  | 2   |
| 7  | 2   |
+----+-----+
<strong>Output:</strong> 
+-----------------+
| ConsecutiveNums |
+-----------------+
| 1               |
+-----------------+
<strong>Explanation:</strong> 1 is the only number that appears consecutively for at least three times.
</pre>
 
 
 
---
 
[submissions](https://leetcode.com/problems/consecutive-numbers/submissions/) | [solutions](https://leetcode.com/problems/consecutive-numbers/solutions/)
 
 
tab: 中文
 
<p>表：<code>Logs</code></p>
 
<pre>
+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| id          | int     |
| num         | varchar |
+-------------+---------+
在 SQL 中，id 是该表的主键。
id 是一个自增列。</pre>
 
<p>&nbsp;</p>
 
<p>找出所有至少连续出现三次的数字。</p>
 
<p>返回的结果表中的数据可以按 <strong>任意顺序</strong> 排列。</p>
 
<p>结果格式如下面的例子所示：</p>
 
<p>&nbsp;</p>
 
<p><strong>示例 1:</strong></p>
 
<pre>
<strong>输入：</strong>
Logs 表：
+----+-----+
| id | num |
+----+-----+
| 1  | 1   |
| 2  | 1   |
| 3  | 1   |
| 4  | 2   |
| 5  | 1   |
| 6  | 2   |
| 7  | 2   |
+----+-----+
<strong>输出：</strong>
Result 表：
+-----------------+
| ConsecutiveNums |
+-----------------+
| 1               |
+-----------------+
<strong>解释：</strong>1 是唯一连续出现至少三次的数字。</pre>
 
 
 
---
 
[提交记录](https://leetcode.cn/problems/consecutive-numbers/submissions/) | [题解](https://leetcode.cn/problems/consecutive-numbers/solution/)

Solutions & Notes

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