Сделать 4 массива из одного
Есть массив данных
var arr = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28] Из него нужно сделать четыре массива var one =[2, 10, 18, 26]; var two =[4, 12, 20, 28]; var three =[6, 14, 22, 30]; var four =[8, 16, 24, 32]; Т.е. забирать значение через каждые три элемента Как это сделать? |
var arr = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28]; var one = []; var two = []; var three = []; var four = []; const arrs = [one, two, three, four]; for (let i = 0; i < arr.length; i++) arrs[i%4].push(arr[i]); console.log(one, two, three, four); |
yaparoff,
let arr = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32]; const divide = (arr, i = 4) => arr.reduce((ar, el, k) => { k %= i; ar[k] ? ar[k].push(el) : (ar[k] = [el]) return ar }, []) const [one, two, three, four] = divide(arr); console.log(one, two, three, four); |
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