Column with a few zeros X85208
Write a function zcol(mat) that receives an n× m matrix of integers mat and finds the first column with at least a 10% of zeros with respect to the column size, returning the value of that column at the first row. If no such column exists, it must return the sum of all the elements of the matrix. You can count on both the number of rows and the number of columns being strictly positive.
Observation
You can safely assume only that the rows of the matrix are either tuples or lists, and that the matrix itself is either a tuple of rows or a list of rows.
Sample session
>>> zcol([(2, 3, 4), (0, 1, 5), (-1, 0, 6)]) 2 >>> zcol(([1, 2, 0], [7, 10, -7], [102, 101, 100])) 0 >>> zcol([(10, 20), (11, 21), (12, 22), (13, 23), (0, 24), (15, 25), (16, 0), (17, 27), (18, 28), (19, 29), (20, 30)]) 400 >>> zcol(([10, 20], [11, 21], [12, 22], [13, 23], [0, 0], [15, 25], [16, 24], [17, 27], [18, 28], [19, 29], [20, 30])) 400
Information
- Author
- José Luis Balcázar
- Language
- English
- Official solutions
- Python
- User solutions
- Python