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MeyCry/flatter.js

Last active January 20, 2020 22:53
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flatter for array
Raw
flatter.js
function flatter(arr) {
return arr.flat(Infinity);
}
flatter(
[1, 2, [3, 4, [5]], 6, [[7, [8]], 9]],
);
function flatter2(arr) {
const arrCopy = arr.slice();
const result = [];
while (arrCopy.length) {
const next = arrCopy.pop();
if (Array.isArray(next)) {
arrCopy.push(...next);
} else {
result.push(next);
}
}
return result.reverse();
}
flatter2([1, 2, [3, 4, [5]], 6, [[7, [8]], 9]]);
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