Leetcode 1920. 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]
Example 2:
Input: nums = [5,0,1,2,3,4]Output: [4,5,0,1,2,3]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[5], nums[0], nums[1], nums[2], nums[3], nums[4]] ? ?= [4,5,0,1,2,3]
Runtime1 ms
Beats
99.95%
Memory42.7 MB
Beats
95.48%