Leetcode 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits

Given a digit string and a budget k of adjacent swaps, produce the lexicographically smallest string obtainable by performing at most k adjacent swaps. The core challenge is a greedy selection of the smallest digit that can be moved to each position within the remaining swap budget, which requires efficient tracking of positions/swaps (order-statistics) for large n and k.