LeetCode 760. Find Anagram Mappings

Description

https://leetcode.com/problems/find-anagram-mappings/

Given two lists Aand B, and B is an anagram of AB is an anagram of A means B is made by randomizing the order of the elements in A.

We want to find an index mapping P, from A to B. A mapping P[i] = j means the ith element in A appears in B at index j.

These lists A and B may contain duplicates. If there are multiple answers, output any of them.

For example, given

A = [12, 28, 46, 32, 50]
B = [50, 12, 32, 46, 28]

We should return

[1, 4, 3, 2, 0]

as P = 1 because the 0th element of A appears at B, and P = 4 because the 1st element of A appears at B, and so on.

Note:

1. A, B have equal lengths in range [1, 100].
2. A[i], B[i] are integers in range [0, 10^5].

Explanation

Find A’s numbers’ indices in B.

Python Solution

class Solution:
def anagramMappings(self, A: List[int], B: List[int]) -> List[int]:
results = []

for number in A:
results.append(B.index(number))

return results
• Time Complexity: O(N)
• Space Complexity: O(N)