文本文件到 JavaScript 嵌套数组

Question

我有这个 .txt 文件要更改为嵌套数组：

000011000000
000100001100
000001100001
010010001000
100101000100
101010010001
001000001001
000001000111
010100100010
010010010010
000000011100
001001110000

转格式：

var data = [
        [0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0],
        [0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1],
        [0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0],
        [1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0],
        [1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1],
        [0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1],
        [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1],
        [0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0],
        [0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0],
        [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0],
        [0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0]
    ]

到目前为止我所做的是：

1. 读取文件：

function readMatrixFile(){
    var inputElement = document.getElementById("adjencyMatrixInput");
    var fileList = inputElement.files;
    var plainMatrix = new FileReader();
    plainMatrix.readAsText(fileList[0]);
    plainMatrix.onload = function () {
        //Add to Matrix
        renderMatrix(plainMatrix)
    }
}

和 2. 拆分文件

function renderMatrix(plainMatrix) {
    var matrix = plainMatrix.result;
    var mtx = [];

    matrix = matrix.split("\n");
    
}

我知道我需要通过 for 循环，但不确定如何获取嵌套数组。

Answer 1

你把matrix变成一串1和0，你只需要把字符串拆分成数字就行了

function renderMatrix(plainMatrix) {
    var matrix = plainMatrix.result;

    var mtx = matrix.split("\n"); // mtx is now an array of strings of ones and zeros
    
    mtx = mtx.map(string => string.split('')); // mtx is now an array of arrays of number string

    mtx = mtx.map(nested => nested.map(numberString => Number(numberString))); // mtx is now what you want

}

Answer 2

Split 字符串由换行符，然后map 覆盖每个项目，并将字符串转换为带有spread syntax 的字符数组。

const str = `000011000000
000100001100
000001100001
010010001000
100101000100
101010010001
001000001001
000001000111
010100100010
010010010010
000000011100
001001110000`

const res = str.split("\n").map(e => [...e])
console.log(res)

要将字符转换为数字，请映射字符数组并解析每个项目：

const str = `000011000000
000100001100
000001100001
010010001000
100101000100
101010010001
001000001001
000001000111
010100100010
010010010010
000000011100
001001110000`

const res = str.split("\n").map(e => [...e].map(e => +e))
console.log(res)