Leetcode Problem 503. Next Greater Element II

503. Next Greater Element II

Leetcode Solutions

Initialize an empty stack and a result array with the same length as nums filled with -1.
Iterate over the array twice to simulate circularity.
For each element, while the stack is not empty and the current element is greater than the element corresponding to the index on the top of the stack, pop from the stack and set the result for that index to the current element.
If traversing the array for the first time, push the current index onto the stack.
After the second pass, return the result array.

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