Min-Max Matrix Z70247

Statement

Given a square matrix $M$ of integers, with size $n\times{n}, n\ge{1}$ , its matrix minMax is a matrix $mM$ with size $x\times{2}$ such that for all $i, 0\le{i}\le{n}$ , element mM[i][0] is the minimum element of the $i$ -th row of $M$ and mM[i][1] is the maximum element of the $i$ -th column of $M$ .

For instance, if M is the matrix

1 2 3
6 7 4
8 9 5

then mM will be:

1 8
4 9
5 5

Implement a function minMax(M) that given a square matrix M returns its minMax matrix.

You can use the python min and max functions to compute the maximum and minimum of a list.

Observation

Only the function is expected. Remember to comment out any testing main program you may have.

Sample session

>>> minMax([[1, 2, 3], [6, 7, 4], [8, 9, 5]])
[[1, 8], [4, 9], [5, 5]]
>>> minMax([[1, 2, 3], [3, 2, 1], [2, 3, 1]])
[[1, 3], [1, 3], [1, 3]]
>>> minMax([[100]])
[[100, 100]]
>>> minMax([[2, 10], [5, 1]])
[[2, 5], [1, 10]]
>>> minMax([[14, 4], [1, 1]])
[[4, 14], [1, 4]]
>>> minMax([[5, 2, 1, -2], [21, -1, -3, 8], [2, 3, 6, 6], [1, 2, 4, 5]])
[[-2, 21], [-3, 3], [2, 6], [1, 8]]

Information

Author: Lluís Padró
Language: English
Official solutions: Python
User solutions: Python