Count family login pairs (AWS SDE Assessment Coding Challenge)

hacker-rank-aws-count-family-login-pairs.ts

function countFamilyLoginsPairs(logins) {
    // Write your code here
    let familyLoginPairsCount = 0;
    const cachedResults = {};
    logins.map((login, currentLoginIndex) => {
        const possibleLoginPairs = ['', ''];
        cachedResults[login] = 0;
        if (cachedResults[login]) {
            cachedResults[login] += 1;
            familyLoginPairsCount++;
        }
        [...login].map(loginLetter => {
            const loginLetterCharCode = loginLetter.charCodeAt(0);
            possibleLoginPairs[0] += String.fromCharCode(loginLetterCharCode === 122 ? 97 : loginLetterCharCode + 1);
            possibleLoginPairs[1] += String.fromCharCode(loginLetterCharCode === 97 ? 122 : loginLetterCharCode - 1);
        });
        // console.log(login, possibleLoginPairs);
        for(let nextLoginIndex = currentLoginIndex + 1; nextLoginIndex < logins.length; nextLoginIndex++) {
            const nextLogin = logins[nextLoginIndex];
            if (possibleLoginPairs.includes(nextLogin)) {
                familyLoginPairsCount++;
                cachedResults[login] += 1;
            }
        }
    });
    // console.log(logins, familyLoginPairsCount);
    return familyLoginPairsCount;
}

countFamilyLoginsPairs(['ab', 'bc', 'zz', 'aa', 'bb', 'cc', 'cc', 'cc', 'aa']) // 8

hacker-rank-fizz-buzz.java

class Solution {
    public List<String> fizzBuzz(int n) {
        List output = new ArrayList();
        for (int i = 1; i <= n; i++) {
            String print = i % 3 == 0 ? "Fizz" : "";
            if (i % 5 == 0) {
                output.add(print + "Buzz");
                continue;
            }
            output.add(print.isEmpty() ? Integer.toString(i) : print);
        }
        return output;
    }
}

hacker-rank-fizz-buzz.ts

const isDivisbleBy = (numerator: number, denominator: number): boolean =>
    numerator % denominator === 0;

const fizzBuzz = (num: number): void => {
    for (let n = 1; n <= num; n++) {
        let print = n % 3 === 0 ? 'Fizz' : '';
        if (n % 5 === 0) {
            console.log(print + 'Buzz');
            continue;
        }
        console.log(print || n);
    }
    
}

i got this question and got zero zil, can you do this in Java?