# Scala algorithm: Reshape a matrix

Published

## Algorithm goal

Turn an m-by-n matrix into an n-by-m matrix, retaining the order of the elements. For example:

1 | 2 | 3 |

4 | 5 | 6 |

Becomes:

1 | 2 |

3 | 4 |

5 | 6 |

## Test cases in Scala

## Algorithm in Scala

4 lines of Scala (compatible versions 2.13 & 3.0), showing how concise Scala can be!

## Explanation

In Scala this is straightforward: flatten the whole matrix, and then group the elements into chunks of length of the height of the matrix (.grouped). (this is Â© from www.scala-algorithms.com)

## Scala concepts & Hints

### View

The

`.view`

syntax creates a structure that mirrors another structure, until "forced" by an eager operation like .toList, .foreach, .forall, .count.