Given an array of numbers, create a new array where each element represents the next strictly greater element to the right of the corresponding element in the input array x. If there is no next greater element, put -1.
For example, given x = [1 3 2 4], the output should be [3 4 4 -1] because:
  • The next greater element to 1 is 3.
  • The next greater element to 3 is 4.
  • The next greater element to 2 is 4.
  • There is no next greater element to 4, so it is -1.
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Last Solution submitted on Feb 20, 2026

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Dyuman Joshi Riccardo G. Alexander Ross Lorenzo

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