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halivert/splitIn.js

Created August 22, 2021 18:41
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Split in groups a JS array
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splitIn.js
const splitIn = (elements, groups) => {
return elements.reduce((result, val, _, elements) => {
let lastItem = result[result.length - 1];
if (lastItem.length === Math.ceil(elements.length / groups)) result.push([val]);
else lastItem.push(val);
return result;
}, [[]]);
}
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