Here's a straightforward question. I have an array, like this:
let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
maxChunkLength = 3;
I am looking to divide this array into multiple arrays as follows:
[[1, 2, 3], [3, 4, 5], [5, 6, 7], [7, 8, 9], [9, 10]]
The key point here is that the last element of each chunk should be the first element of the following chunk.
If anyone has suggestions on the optimal approach to achieve this, please share!
this specific method could be the solution you need,
function divideArray(arr, sections){
var x,y, result = [];
sections = sections - 1;
for (x=0,y=arr.length; x<y; x+=sections) {
result.push(arr.slice(x,x+sections +1));
}
return result;
}
demonstrations
divideArray([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 3); //[[1, 2, 3], [3, 4, 5], [5, 6, 7], [7, 8, 9], [9, 10]]
This solution has been optimized for speed, performing around twice as fast as the original implementation.
function splitArrayIntoChunks(arr, chunkSize) {
var currentChunk = [], result = [], i, j;
for (i=0, j=arr.length; i<j; i++) {
currentChunk.push(arr[i]);
if (currentChunk.length === chunkSize) {
result.push(currentChunk);
currentChunk = [arr[i]];
}
}
if (currentChunk.length !== chunkSize) {
result.push(currentChunk);
}
return result;
}
document.write(JSON.stringify(splitArrayIntoChunks([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 3)));This code snippet appears to be functional and should produce the desired output.
let array = [1, 2, 3, 4, 5, 6, 7, 8];
let element1 = 0, element2 = 0, element3 = 0;
let finalResult = [];
let splitSize = 3;
for(let index = 0; index < array.length; index += (splitSize -1) ) {
let tempArray = [];
for(let subIndex = 0; subIndex < splitSize && arr[index+subIndex]; subIndex++) {
tempArray.push(array[index + subIndex]);
}
finalResult.push(tempArray);
}
console.log("[" + finalResult.join("]\n[") + "]");
Is this solution suitable for your needs?
let originalNumbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let chunkSize = 3;
let newChunkedArray = [];
for (let i = 0; i < originalNumbers.length; chunkSize += 2) {
let tempChunk = [];
for (let j = i; j < i+chunkSize; j++) {
if (typeof originalNumbers[j] !== "undefined") {
tempChunk.push(originalNumbers[j]);
}
}
newChunkedArray.push(tempChunk);
tempChunk = [];
}
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