[Leet Code] Build Array from Permutation

Leet Code: https://leetcode.com/problems/build-array-from-permutation/

Problem:

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).

Example 1:

Input: nums = [0,2,1,5,3,4]
Output: [0,1,2,4,5,3]
Explanation:
The array ans is built as follows:
ans =…