#1920 - Build Array from Permutation

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Problem Description

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 array of distinct integers from 0 to nums.length - 1 (inclusive).

Solution

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var buildArray = function(nums) {
  return nums.map(n => nums[n]);
};