My input is a multidimensional array and I want everything in the array to be in one string -
Input -
let input = [[1,2,3],[1,3,2],[3,2,1],[3,1,2],[2,1,3],[2,3,,1]]
Expected Ouput
"123,132,321,312,213,231"
I have tried
input.join() // which gives me
"1,2,3,1,3,2,3,2,1,3,1,2,2,1,3,2,3,1"
And also I have tried
input.join('') // which gives me
"1,2,31,3,23,2,13,1,22,1,32,3,1"
I have also tried using a for loop for this
let input = [[1,2,3],[1,3,2],[3,2,1],[3,1,2],[2,1,3],[2,3,1]]
let output = ''
for (let i = 0; i < input.length; i++){
let result = input[i]
output += result.toString()
}
Which returns
"123132321312213231"
I can't seem to crack this... Any tips??
Thanks
Can be achieved simply using .map() with .join('') inside:
const input = [[1,2,3],[1,3,2],[3,2,1],[3,1,2],[2,1,3],[2,3,,1]];
const result = input.map(arr => arr.join('')).join();
console.log(result);When you pass an empty string '' into .join(), all elements are joined without any characters in between them.
You almost there with your for loop
The other Solution from the User above me is in my opionion better
but here using your system you could do something like this:
let input = [[1, 2, 3], [1, 3, 2], [3, 2, 1], [3, 1, 2], [2, 1, 3], [2, 3, 1]]
let output = ''
// since we are working with an array why not use forEach, but you can also go with a normal for, or for of etc
input.forEach((array) => {
// here we could another forEach for example
array.forEach(number => { // adding all numbers inside the smaller array to one string
output += number;
})
output += ','
})
output = output.slice(0, output.length - 1)
gives the output :
"123,132,321,312,213,231"
Array.prototype.join() is what you're looking for, but to join each array element without any separators requires an empty string array.join(""):
let input = [[1,2,3],[1,3,2],[3,2,1],[3,1,2],[2,1,3],[2,3,1]]
let stringified2DArray = ""
for (let i in input) {
if (i == input.length-1) stringified2DArray += input[i].join("")
else stringified2DArray += input[i].join("") + ','
}
console.log(stringified2DArray)In the above example, we loop through each inner array, join each element and add comma afterward. If it's the last iteration in the loop, we exclude the comma to avoid a trailing comma.