#1505

Minimum Possible Integer After at Most K Adjacent Swaps On Digits

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Description

A very large integer is represented as a string num. You may perform at most k swaps of adjacent digits. Return the lexicographically smallest integer obtainable, as a string.

Example 1:

Input: num = "4321", k = 4
Output: "1342"
Explanation: The steps to obtain the minimum integer from 4321 with 4 adjacent swaps are shown.

Example 2:

Input: num = "100", k = 1
Output: "010"
Explanation: It's ok for the output to have leading zeros, but the input is guaranteed not to have any leading zeros.

Example 3:

Input: num = "36789", k = 1000
Output: "36789"
Explanation: We can keep the number without any swaps.

Code

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