565. Array Nesting

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You are given an integer array nums of length n where nums is a permutation of the numbers in the range [0, n - 1]. You should build a set s[k] = {nums[k], nums[nums[k]], nums[nums[nums[k]]], ... } subjected to the following rule: - The first element in s[k] starts with the selection of the element nums[k] of index = k. - The next element in s[k] should be nums[nums[k]], and then nums[nums[nums

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solution.cppC++17

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