Sorting an array by two values

Question

Suppose I have ``` an_array = [[2, 3], [1, 4], [1, 3], [2, 1], [1, 2]] ``` I want to sort this array by the first value of each inner array, and then by the second (so the sorted array should look like this: `[[1, 2], [1, 3], [1, 4], [2, 1], [2, 3]]`) What's the most readable way to do this?

Accepted Answer

This is the default behavior for sorting arrays (see the Array#<=> method definition for proof). You should just be able to do:

```
 an_array.sort
```

Sorting an array by two values

Solution

Problem