Published
Edited
Apr 26, 2019
1 star
{
const array1 = [1,0,2,3,4];
const array2 = [3,5,6,7,8,13];
return sum(array1, array2);
function sum(arr1, arr2) {
const arrs = [arr1, arr2].sort((a, b) => a.length < b.length);
return arrs[0].reduce((res, n, i) => {
res[i] = n + (arrs[1][i] || 0);
return res;
}, []);
}
}
{
const a = [1, [2], [3, [[4]]],[5,6]];
return [
flatten(a),
flatten(a, true)
];
function flatten(arr, shallow) {
return shallow ?
[].concat(...arr) :
arr.reduce((res, a) => Array.isArray(a) ? res.concat(...flatten(a)) : res.concat(a), []);
}
}
{
const a = [1, 3, 6, 4, 2, 1];
const b = [1, 2, 3];
const c = [-1, -3];
return [solution(a), solution(b), solution(c)];
function solution(arr) {
return Math.max(getSmallestPositive(arr.sort()), 1)
}
function solution1(arr) {
const sorted = arr.reduce((res, n, i) => {
for (let j = 0; j < res.length; j++) {
if (res[i] < res[j]) {
const x = res[j];
res[j] = res[i];
res[i] = x;
}
}
return res;
}, arr.slice());
return Math.max(getSmallestPositive(sorted), 1);
}
function getSmallestPositive(arr) {
const lastIdx = arr.length - 1;
for (let i = 1; i <= arr[lastIdx]; i++) {
if(!arr.includes(i)) {
return i;
}
}
return arr[lastIdx] + 1;
}
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
