commonSubString.js

function commonSubString(arr1, arr2) {
    for (const [i, value] of arr1.entries()) {
        let isCommon = checkSubString(arr1[i], arr2[i])
        console.log(isCommon)
    }
}

function checkSubString(s1, s2) {
    let shortStr;
    let longStr;

    if (s1.length < s2.length) {
        shortStr = s1;
        longStr = s2;
    } else {
        shortStr = s2;
        longStr = s1;
    }

    for (let i = 0; i < shortStr.length; i++) {
        if (longStr.indexOf(shortStr[i]) !== -1) {
            return "YES"
        }
    }

    return "NO"
}

let a = ["ab", "qw"]
let b = ["ad", "sdlfjgsldfjaafhjklashflaksdflaskdfaskdhfaskasdf"]

console.log(commonSubString(a, b))