Saddle Points
Saddle Points

Saddle Points



Detect saddle points in a matrix.

So say you have a matrix like so:

    1  2  3
1 | 9  8  7
2 | 5  3  2     <--- saddle point at column 1, row 2, with value 5
3 | 6  6  7

It has a saddle point at column 1, row 2.

It's called a "saddle point" because it is greater than or equal to every element in its row and less than or equal to every element in its column.

A matrix may have zero or more saddle points.

Your code should be able to provide the (possibly empty) list of all the saddle points for any given matrix.

The matrix can have a different number of rows and columns (Non square).

Note that you may find other definitions of matrix saddle points online, but the tests for this exercise follow the above unambiguous definition.

Last updated 1 December 2021
Edit via GitHub The link opens in a new window or tab
Go Exercism

Ready to start Saddle Points?

Sign up to Exercism to learn and master Go with 26 concepts, 128 exercises, and real human mentoring, all for free.