Back to course home
0% completed
Vote For New Content
Remove K Digits (hard)
Problem Statement
Given a non-negative integer represented as a string num
and an integer k
, delete k
digits from num
to obtain the smallest possible integer. Return this minimum possible integer as a string.
Examples
-
- Input:
num = "1432219", k = 3
- Output:
"1219"
- Explanation: The digits removed are 4, 3, and 2 forming the new number 1219 which is the smallest.
- Input:
-
- Input:
num = "10200", k = 1
- Output:
"200"
- Explanation: Removing the leading 1 forms the smallest number 200.
- Input:
-
- Input:
num = "1901042", k = 4
- Output:
"2"
- Explanation: Removing 1, 9, 1, and 4 forms the number 2 which is the smallest possible. Constraints:
- Input:
- 1 <= k <= num.length <= 10<sup>5</sup>
num
consists of only digits.num
does not have any leading zeros except for the zero itself.
Try it yourself
Try solving this question here:
Python3
Python3
. . . .
.....
.....
.....
Like the course? Get enrolled and start learning!
Table of Contents
Contents are not accessible
Contents are not accessible
Contents are not accessible
Contents are not accessible
Contents are not accessible