Multiply a Column

Write a function $prod\_col(i, m)$ that receives the index $i$ of one column of a matrix of int’s $m$ and returns the product of all the integers in that column. The matrix of int’s is represented as a tuple of rows, each row being, in turn, a tuple of int’s. If $m$ has $n$ columns, we are guaranteed that $0 \leq i < n$ .

Observation

Observe that $0 \leq i < n$ implies that the rows of $m$ , if any, have that column and are hence nonempty, but nothing else.

Problem information

Author: José Luis Balcázar

Generation: 2026-01-25T17:16:10.590Z