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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | 16x 1x 15x 15x | /**
* Interleave the items from all the lists so that the first items are first
* in the returned list, the second items are next etc.
* Does this in a O(n) fashion, and return lists[0] if there is only one list.
*
* @param lists - Array of arrays to interleave
* @returns Array reordered to be breadth first traversal of lists
*/
export default function interleave<T>(lists: T[][]): T[] {
if (!lists || !lists.length) {
return [];
}
if (lists.length === 1) {
return lists[0];
}
const useLists = [...lists];
const ret = [];
for (let i = 0; useLists.length > 0; i++) {
for (let j = 0; j < useLists.length; j++) {
const list = useLists[j];
Iif (i >= list.length) {
useLists.splice(j, 1);
j--; // Adjust index after removal to avoid iterator skipping
continue;
}
ret.push(list[i]);
}
}
return ret;
}
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