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Add a `transpose` Java goody

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
tooling

Research direction

Start by locating the Java goodies and the existing VirtualList implementation. Compare its lazy backing behavior with the proposed transpose(matrix) API and use the 3×3 example as the expected result. Done means the API returns the transposed view while preserving the requested lazy relationship to the original data.

Written by the indexing model from the issue text.

Description

enhancement java

I'm thinking it would be neat to make this "lazy", i.e. have it backed by the same data as the original.

A possible API:

int[][] matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
List<List<Integer>> transposedMatrix = transpose(matrix);

System.out.println(transposedMatrix); // should print [[1, 4, 7], [2, 5, 8], [3, 6, 9]]

The implementation could use the VirtualList goody to achieve this effect.

Dominant language
TypeScript
Stars
20
Forks
12
No merged PRs in 30d

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