leetcode刷题记录--Find Anagram Mappings

题目

难度：easy

Given two lists Aand B, and B is an anagram of A. B 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[0] = 1 because the 0th element of A appears at B[1], and P[1] = 4 because the 1st element of A appears at B[4], and so on.
Note:

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

第一次解法

/**
 * @param {number[]} A
 * @param {number[]} B
 * @return {number[]}
 */
var anagramMappings = function(A, B) {
    let res = []
    A.forEach(function(item){
        res.push(B.indexOf(item))
    })
    return res
};
# runtime : 94 ms