ans.js

// Build Array from Permutation


/*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 = [nums[nums[0]], nums[nums[1]], nums[nums[2]], nums[nums[3]], nums[nums[4]], nums[nums[5]]]
    = [nums[0], nums[2], nums[1], nums[5], nums[3], nums[4]]
    = [0,1,2,4,5,3]*/


// Solution

var buildArray = function(nums) {
    let ans=new Array();
    for(let i=0;i<nums.length;i++){
        ans[i]=nums[nums[i]]
    }
    console.log(ans)
};

(buildArray([0,2,1,5,3,4]))