Solution: Remove K Digits
Explore how to apply a greedy algorithm to remove exactly k digits from a numeric string to achieve the smallest possible number. Understand the use of a monotonic increasing stack to decide which digits to remove, and learn to handle edge cases like leading zeros and leftover removals efficiently.
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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