Twitch 前端 Front End OA 面經

Twitch Online OA 總共 3題希望對各位朋友有幫助：

1. 考prototype:

You are given an array A consisting of N integers. Your task is to return an array of N objects that share the same prototype, each of whom should have a "value()" method, which called on i-th object should return the integer A[i].

The "value()" method of all objects must be the same method and it cannot be an own property of those objects (for an object O the following O.hasOwnProperty('value') should be false).

Write a function "solution" such that, given an array A of N integers, returns an array T of N JavaScript objects. For any two indices i, j < N, the following conditions should be true:

    T[j].value() === A[j]
    T[i].value === T[j].value
    !T[i].hasOwnProperty('value')
    !T[j].hasOwnProperty('value')

where T = solution(A).

For example, given A = [4, 2], your function should return such array T, that

    T[0].value() === 4
    T[1].value() === 2
    T[0].value === T[1].value
    !T[0].hasOwnProperty('value')
    !T[1].hasOwnProperty('value')</tt>

Assume that:

- N is an integer within the range 1 to 200
- each element of array A is an integer within the range −9,007,199,254,740,991 to 9,007,199,254,740,991

In your solution, focus on correctness. The performance of your solution will not be the focus of the assessment.

2. 考 iterating over HTML DOM Node

You are in a browser-like environment, where you have access to the window object, the document object, and also $ − the jQuery library. The document contains a two-dimensional table. Each cell of the table has an upper-case letter in it and has its background color and text color set. Your task is si

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sed, any one of them could be chosen.
Write a function:

function solution(S) such that, given a string S consisting of N characters, returns any string that can result from a sequence of transformations as described above.


For example, given string S = "ACCAABBC" the function may return "AC", because one of the possible sequences of transformations is as follows:

ACCAABBC -> AAABBC -> ABBC -> AC

Also, given string S = "ABCBBCBA" the function may return "", because one possible sequence of transformations is:

ABCBBCBA -> ABCCBA -> ABBA -> AA -> ""

Finally, for string S = "BABABA" the function must return "BABABA", because no rules can be applied to string S.
Write an efficient algorithm for the following assumptions:

string S consists only of the following characters: "A", "B" and/or "C".

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有后续面经吗 我过几天有个面试

yejiada 发表于 2020-9-4 03:31
有后续面经吗 我过几天有个面试

想问问你做codility了吗？

有没有电面的面经~

这第一题，啥意思。没太明白

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