从单个数组创建嵌套数组的最快方法？

如何解决从单个数组创建嵌套数组的最快方法？

我在 .txt 文件中有大量数据。我正在使用 node.js fs.readFile 读取它，当我将数据作为 data.toString() 获取时，我得到如下内容：

II IY 9C JD 2D QC QY 6Y 3C ID
KI JI 2Y 6Y 5Y QY QI 3Y 7C 6D
TC 3Y 4I 7Y QC 2Y 3I 8C JI KH
AH 8H 5I 4C 9H JD 3H 7I JC AC

我需要创建一个嵌套数组，每行分成五个。它应该是这样的：

[
[[["I","I"] ["I","Y"] ["9","C"] ["J","D"] ["2","D"]],[["Q","C"] ["Q","Y"] ["6","Y"] ["3","C"] ["I","D"]]]
[[["K","I"] ["J","I"] ["2","Y"] ["5","Y"]],"Y"] ["Q","I"] ["3","Y"] ["7","C"] ["6","D"]]]
[[["T","C"] ["3","Y"] ["4","I"] ["7","C"]],[["2","I"] ["8","I"] ["K","H"]]]
[[["A","H"] ["8","H"] ["5","I"] ["4","C"] ["9","H"]],[["J","D"] ["3","H"] ["7","C"] ["A","C"]]]
]

这样做的最佳方法是什么？

编辑：

当前代码：

const fs = require('fs');
  fs.readFile(path,async (err,data) => {
    if (err) {
      return console.error(err);
    }
    console.log(data.toString());
  });

文件片段：

8C TS KC 9H 4S 7D 2S 5D 3S AC
5C AD 5D AC 9C 7C 5H 8D TD KS
3H 7H 6S KC JS QH TD JC 2D 8S
TH 8H 5C QS TC 9H 4D JC KS JS
7C 5H KC QH JD AS KH 4C AD 4S
5H KS 9C 7D 9H 8D 3S 5D 5C AH
6H 4H 5C 3H 2H 3S QH 5S 6S AS
TD 8C 4H 7C TC KC 4C 3H 7S KS
7C 9C 6D KD 3H 4C QS QC AC KH
JC 6S 5H 2H 2D KD 9D 7C AS JS
AD QH TH 9D 8H TS 6D 3S AS AC
2H 4S 5C 5S TC KC JD 6C TS 3C
QD AS 6H JS 2C 3D 9H KC 4H 8S
KD 8S 9S 7C 2S 3S 6D 6S 4H KC
3C 8C 2D 7D 4D 9S 4S QH 4H JD
8C KC 7S TC 2D TS 8H QD AC 5C
3D KH QD 6C 6S AD AS 8H 2H QS
6S 8D 4C 8S 6C QH TC 6D 7D 9D

解决方法

这将为您提供多组 2 组 5 个项目的预期输出

let data = `II IY 9C JD 2D QC QY 6Y 3C ID
KI JI 2Y 6Y 5Y QY QI 3Y 7C 6D
TC 3Y 4I 7Y QC 2Y 3I 8C JI KH
AH 8H 5I 4C 9H JD 3H 7I JC AC`;

let nested = data.split("\n").map(l => ([
  [...l.split(" ").filter((n,i) => i < 5).map(n => n.split(''))],[...l.split(" ").filter((n,i) => i >= 5).map(n => n.split(''))]
]))

console.log(nested)

// or even more concise

const gset = (grp,setn) => [...grp.split(" ").filter((n,i) => setn == 0 ? (i < 5) : (i>=5)).map(n => n.split(''))]
let nested2 = data.split("\n").map(g => ([gset(g,0),gset(g,1)]))
console.log('More concise version:',nested2)

,

您可以进行一些字符串操作，尤其是 split()。

更新

答案似乎不能满足 OP 的问题。这是实际版本：

const data = 
`8C TS KC 9H 4S 7D 2S 5D 3S AC
5C AD 5D AC 9C 7C 5H 8D TD KS
3H 7H 6S KC JS QH TD JC 2D 8S
TH 8H 5C QS TC 9H 4D JC KS JS
7C 5H KC QH JD AS KH 4C AD 4S
5H KS 9C 7D 9H 8D 3S 5D 5C AH
6H 4H 5C 3H 2H 3S QH 5S 6S AS
TD 8C 4H 7C TC KC 4C 3H 7S KS
7C 9C 6D KD 3H 4C QS QC AC KH
JC 6S 5H 2H 2D KD 9D 7C AS JS
AD QH TH 9D 8H TS 6D 3S AS AC
2H 4S 5C 5S TC KC JD 6C TS 3C
QD AS 6H JS 2C 3D 9H KC 4H 8S
KD 8S 9S 7C 2S 3S 6D 6S 4H KC
3C 8C 2D 7D 4D 9S 4S QH 4H JD
8C KC 7S TC 2D TS 8H QD AC 5C
3D KH QD 6C 6S AD AS 8H 2H QS
6S 8D 4C 8S 6C QH TC 6D 7D 9D`;
const lines = data.split("\n"); // Each line will be an array value
let result = []; // Define our result
lines.forEach(item => {
  let current = [];
  let now = item.split(" ");
  let fir = [];
  let sec = [];
  for(let i = 0; i < now.length; i++) {
    if(i < 5) fir.push(now[i].split(""));
    else sec.push(now[i].split(""));
  }
  current.push(fir);
  current.push(sec);
  result.push(current);
});
console.log(result);

旧版本

const data = 
`8C TS KC 9H 4S 7D 2S 5D 3S AC
5C AD 5D AC 9C 7C 5H 8D TD KS
3H 7H 6S KC JS QH TD JC 2D 8S
TH 8H 5C QS TC 9H 4D JC KS JS
7C 5H KC QH JD AS KH 4C AD 4S
5H KS 9C 7D 9H 8D 3S 5D 5C AH
6H 4H 5C 3H 2H 3S QH 5S 6S AS
TD 8C 4H 7C TC KC 4C 3H 7S KS
7C 9C 6D KD 3H 4C QS QC AC KH
JC 6S 5H 2H 2D KD 9D 7C AS JS
AD QH TH 9D 8H TS 6D 3S AS AC
2H 4S 5C 5S TC KC JD 6C TS 3C
QD AS 6H JS 2C 3D 9H KC 4H 8S
KD 8S 9S 7C 2S 3S 6D 6S 4H KC
3C 8C 2D 7D 4D 9S 4S QH 4H JD
8C KC 7S TC 2D TS 8H QD AC 5C
3D KH QD 6C 6S AD AS 8H 2H QS
6S 8D 4C 8S 6C QH TC 6D 7D 9D`;
const lines = data.split("\n"); // Each line will be an array value
let result = []; // Define our result
lines.forEach(item => {
  let current = [];
  let now = item.split(" ");
  let fir = [];
  let sec = [];
  for(let i = 0; i < now.length; i++) {
    if(i < 5) fir.push(now[i].split(""));
    else sec.push(now[i].split(""));
  }
  current.push(fir);
  current.push(sec);
  result.push(current);
});
console.log(result);

,

split() 是您想要使用的。

let data = `II IY 9C JD 2D QC QY 6Y 3C ID
KI JI 2Y 6Y 5Y QY QI 3Y 7C 6D
TC 3Y 4I 7Y QC 2Y 3I 8C JI KH
AH 8H 5I 4C 9H JD 3H 7I JC AC`;

const createArray = (str) => {
    const splitedByLines = str.split('\n');
    const splitedByBlank = splitedByLines.map(line => line.split(' '));
    const result = splitedByBlank.map(line => line.map(e => e.split('')));
    return result;
}

console.log(createArray(data));

您甚至可以在一行中完成所有内容：

let data = `II IY 9C JD 2D QC QY 6Y 3C ID
KI JI 2Y 6Y 5Y QY QI 3Y 7C 6D
TC 3Y 4I 7Y QC 2Y 3I 8C JI KH
AH 8H 5I 4C 9H JD 3H 7I JC AC`;

const createArray2 = str => str.split('\n').map(line => line.split(' ')).map(line => line.map(e => e.split('')));

console.log(createArray2(data));