> For the complete documentation index, see [llms.txt](https://jaywin.gitbook.io/leetcode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jaywin.gitbook.io/leetcode/solutions/0571-find-median-given-frequency-of-numbers.md).

# 0571. Find Median Given Frequency of Numbers

<https://leetcode.com/problems/find-median-given-frequency-of-numbers>

## Description

The `Numbers` table keeps the value of number and its frequency.

```

+----------+-------------+
|  Number  |  Frequency  |
+----------+-------------|
|  0       |  7          |
|  1       |  1          |
|  2       |  3          |
|  3       |  1          |
+----------+-------------+
```

In this table, the numbers are `0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2, 3`, so the median is `(0 + 0) / 2 = 0`.

```

+--------+
| median |
+--------|
| 0.0000 |
+--------+
```

Write a query to find the median of all numbers and name the result as `median`.

## ac

```java
```