// A permutation of an array of integers is an arrangement of its members into a sequence or linear order. // For example, for arr = [1,2,3], the following are considered permutations of arr: [1,2,3], ...

Given a zero-based permutation nums (0-indexed), build an array ans of the same length where ans[i] = nums[nums[i]] for each 0 <= i < nums.length and return it. A zero-based permutation nums is an ...