LeetCode 143 Reorder List - An interesting LinkList Problem - Two Pointers (Med, Java, O(n))

Jul 9, 2025 · 2 min read · LeetCode 143 Reorder List LeetCode 143 "Reorder List" requires transforming a linked list from L₀ → L₁ → L₂ → ... → Lₙ₋₁ → Lₙ into L₀ → Lₙ → L₁ → Lₙ₋₁ → L₂ → Lₙ₋₂ → ... The solution uses a three-step approach: Find the middle using the two-pointer t...