now you want to split an array according to the specified size.
chunk (arr, 10)
divide the array into a sum less than or equal to 10. Please consult the gods
let arr = [15,1,3,4,3,4,10,7,19]
function chunk(arr, sum) {
}
// [[15], [1, 3, 4], [3, 4], [10], [7], [19]] var arr = [15,1,3,4,3,4,10,7,19];
function chunk(arr, critical) {
var result = [];
var sum = 0;
var temp = [];
arr.forEach(function(item) {
if(!temp.length) {
temp.push(item);
sum = item;
} else {
if(sum > critical - item) {
result.push(temp);
sum = item;
temp = [item];
} else {
sum += item;
temp.push(item);
}
}
});
result.push(temp);
return result;
}
var result = chunk(arr, 10);
console.log(result);let arr = [15, 1, 3, 4, 3, 4, 10, 7, 19];
let chunk = arr.reduce((arr, num) => {
const n = arr[arr.length - 1];
if (n.length && n.reduce((a, b) => a + b, num) > 10) {
arr.push([num]);
} else {
n.push(num);
}
return arr;
}, [[]]);
console.log(chunk); var arr = [15,1,3,4,3,4,10,7,19],
o = [0],
newArr = [];
arr.reduce(function (p, v, index) {
p + v > 10 ? o.push(index) : false;
return p + v > 10 ? v : p + v;
});
for(var i = 0; i < o.length; iPP) {
newArr.push(arr.slice(o[i], o[i+1]))
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