cassidoo-nq-july24.js

let listA = [1, 4, 5, 6];
let listB = [2, 3, 4, 5, 6];

const biggerArray = (listA, listB) => {
    let greater;
    let lesser;
    if (listA.length > listB.length) {
        greater = listA
        lesser = listB;
    }else {
        greater = listB;
        lesser = listA;
    }
    return {greater, lesser}
};

const findIntersection = (listA, listB) => {
    let {greater, lesser}= biggerArray(listA,listB)
    let greaterSet = new Set(greater)
    let lesserSet = new Set(lesser);
    
    let result

    for(let num of greaterSet) {
        let numPlus = num + 1;
        let numMinus = num - 1;
        if(lesserSet.has(numMinus)){
            result = [numMinus, num]
            return result;
        }
        if (lesserSet.has(numPlus)) {
          result = [num, numPlus];
          return result;
        }
    }
}