See if an array contains all the number from other nested arrays with JavaScript?

Question

I have an array of arrays called winingNumbers. I need to test other arrays (userOneNumers and userTwoNumers) to see if they contain all of the numbers from any of winingNumbers's nested arrays.

const userOneNumers = [1,2,4,5];
const userTwoNumers = [1,2,3,6];

const winingNumbers = [
  [1,2,3],
  [4,5,6]
];

In this example userOneNumers should return false but userTwoNumers should return true.

To clarify, to return true an array must contain ALL of either 1,2,3 or 4,5,6. If an array has some numbers from both eg 1,2,4 then it should return false.

Also the array to be tested may have other numbers eg 8,9,1,2,3,7 but should still return true.

Essentially it's comparing of 2 arrays: https://stackoverflow.com/questions/7837456/how-to-compare-arrays-in-javascript — Andrey, Oct 09 '17 at 14:18
Why not create a new array and insert distinct numbers, then sort them and compaire them? — StuiterSlurf, Oct 09 '17 at 14:18
@Andrey Not exactly, ive updated my question to hopefully make it clearer. — Evanss, Oct 09 '17 at 14:21

Nina Scholz · Accepted Answer · 2017-10-09T14:42:40.193

You could take a set and check against with previously check same length of arrays.

function check(a, b) {
    var bb = new Set(b);
    return a.some(aa => aa.length === b.length && aa.every(aaa => bb.has(aaa)));
}


const userOneNumers = [1, 2, 4, 5];
const userTwoNumers = [1, 2, 3];
const winingNumbers = [[1, 2, 3], [4, 5, 6]];

console.log(check(winingNumbers, userOneNumers)); // false
console.log(check(winingNumbers, userTwoNumers)); // true

Edit after edit of the quesion, without length check, just check an inner array against the given values.

function check(a, b) {
    var bb = new Set(b);
    return a.some(aa => aa.every(aaa => bb.has(aaa)));
}


const userOneNumers = [1, 2, 4, 5];
const userTwoNumers = [1, 2, 3, 6];
const winingNumbers = [[1, 2, 3], [4, 5, 6]];

console.log(check(winingNumbers, userOneNumers)); // false
console.log(check(winingNumbers, userTwoNumers)); // true

Looking at the question edit, it seems like you shouldn't test for length. The tested array can be a superset of the winning array. — Mark, Oct 09 '17 at 14:48

See if an array contains all the number from other nested arrays with JavaScript?

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