Remove K Digits
Updated Feb 24, 2026
Problem
Remove k digits to make the smallest possible number string.
Constraints
1 <= num.length <= 10^5
Examples
Example 1
Input:
{"num": "1432219", "k": 3}
Output:
"1219"
Function Signature
def removeKdigits(self, num: str, k: int) -> str
How to Submit
Implement a Solution class with a removeKdigits method.
Your method will be called with the input parameters and should return the answer.