Solution: Remove K Digits
Explore how to apply a greedy algorithm to remove k digits from a non-negative integer represented as a string to achieve the smallest possible number. This lesson teaches you to use a monotonic increasing stack to efficiently decide which digits to remove, ensuring optimal solutions with linear time complexity.
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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