LeetCode 3563. Lexicographically Smallest String After Adjacent Removals May 26, 2025 weekly contest 451。 雖然是承接 Q2,但是難度跨度也太大了,而且還是複雜度妙妙屋。
LeetCode 3561. Resulting String After Adjacent Removals May 26, 2025 weekly contest 451。 感覺有點像是為 Q4 做鋪陳。