CODEWITHSUNDEEP
javascriptmultidimensional-array
red assault
red assault

Reputation: 99

How to convert an array of strings to a 2-dimensional array?

How do I convert this array : 

let strArr = ["10100", "10111", "11111", "01010"];

into a 2-d array.

The 2-d array will be :-

 1 0 1 0 0
 1 0 1 1 1
 1 1 1 1 1
 0 1 0 1 0

Upvotes: 1

Views: 132

Answers (6)

Daniel Priest
Daniel Priest

Reputation: 98

let inArr = ["10100", "10111", "11111", "01010"];
let outArr = inArr.map( line => line.split("").map(  item =>  +item  ) );

console.log(outArr);

let inArr = ["10100", "10111", "11111", "01010"];
let outArr = inArr.map( line => line.split("").map(  item =>  +item  ) );

Upvotes: 0

SamVK
SamVK

Reputation: 3405

Loop over each item and spread its content into an array - then convert to a number.

let newArr = strArr.map(item => [...item].map(Number));

Upvotes: 0

pretzelhammer
pretzelhammer

Reputation: 15115

let strArr = ["10100", "10111", "11111", "01010"];
let numColumns = strArr[0].length;
let numRows = strArr.length;
let string = strArr.join('');
let result = [];

for (let row = 0; row < numRows; row++) {
  result.push([]);
  for (let column = 0; column < numColumns; column++) {
    result[row].push(parseInt(string.charAt(row*5 + column), 10));
  }
}

console.log(result);

Upvotes: 0

Nina Scholz
Nina Scholz

Reputation: 386620

You could get the iterables from string and map numbers.

var array = ["10100", "10111", "11111", "01010"],
    matrix = array.map(s => Array.from(s, Number));
    
console.log(matrix);
.as-console-wrapper { max-height: 100% !important; top: 0; }

Upvotes: 3

Kavian Rabbani
Kavian Rabbani

Reputation: 984

this way, you will have 2d array of zero and ones 

const newArr = strArr.map((a) => a.split("").map(char => char === "0"? 0: 1))

Upvotes: 0

Pierre-Nicolas Piquin
Pierre-Nicolas Piquin

Reputation: 745

If the result needs to be an array of array containing one element per character of a string, you can split each string with an empty string in a loop or map.

let res = [];
let strArr = ["10100", "10111", "11111", "01010"];
strArr.map((str) => {
    res.push(str.split(''))
});
console.log(res);

Upvotes: 0

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