Solution: Remove K Digits
Explore how to apply a greedy algorithm with a monotonic stack to remove exactly k digits from a non-negative integer string to produce the smallest possible number. Understand each step of this O(n) time solution, including digit comparisons and stack operations, while practicing optimization of number manipulation problems.
We'll cover the following...
We'll cover the following...
Statement
Given a string, num, that represents a non-negative integer and an integer k, remove exactly k digits from num so that the remaining digits form the smallest possible number.
Constraints:
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