Return a List of Sublists

Write a function that takes three arguments (x, y, z) and returns a list containing x sublists (e.g. [[], [], []]), each containing y number of item z.

• x Number of sublists contained within the main list.
• y Number of items contained within each sublist.
• z Item contained within each sublist.

Examples

matrix(3, 2, 3) ➞ [[3, 3], [3, 3], [3, 3]]

matrix(2, 1, "innokodakademija") ➞ [["innokodakademija"], ["innokodakademija"]]

matrix(3, 2, 0) ➞ [[0, 0], [0, 0], [0, 0]]

Notes

• The first two arguments will always be integers.
• The third argument is either a string or an integer.