Python 7 lines easy to understand solution with Stack

  • 0
    def nextGreaterElements(self, nums):
        res = [-1] * len(nums)
        stack = []
            for i in range(len(nums)) * 2:
                while stack and (stack[-1][1] < nums[i]):
                    res[stack.pop()[0]] = nums[i]
                stack.append((i, nums[i]))
        return res

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