Next Greater Element (Circular)

`nums` is circular (the element after the last is the first). For each element, return the first strictly greater value found by walking forward, wrapping around if needed, or `-1` if none exists. **Example 1:** ``` Input: nums = [1, 2, 1] Output: [2, -1, 2] ``` **Example 2:** ``` Input: nums = [1, 2, 3, 4, 3] Output: [2, 3, 4, -1, 4] ``` **Example 3:** ``` Input: nums = [5, 5] Output: [-1, -1] ```