Maximum Number with Limited Digits X26324

Statement

Write a function $maxlim(m, k)$ that finds the largest number that can be written with at most $k$ digits taken from $m$ , and written in the same order as they appear in $m$ . Both $m$ and $k$ are nonnegative integers.

Observation

The digits of all numbers are assumed to be as written in base 10.

Sample session

>>> maxlim(1234, 1)
4
>>> maxlim(3234, 2)
34
>>> maxlim(32749, 2)
79
>>> maxlim(1917, 2)
97
>>> maxlim(32749, 18)
32749
>>> maxlim(2668037, 5)
68037

Information

Author: Jordi Delgado / José Luis Balcázar
Language: English
Official solutions: Python
User solutions: Python