const getStringSpace = (n) => {
    let a = '';
    for (let i = 0; i < n; i++) {
        a = a + ' ';
    }
    a = a + 'x';
    return a;
}

const getLastLine = (n) => {
    let a = '';
    for (let i = 0; i < n; i++) {
        a = a + 'x ';
    }
    return a;
}

const main = () => {
    const n = 5;
    for (let i = 1; i <= n; i++) {
        if (i === 1) {
            console.log(getStringSpace(n - i));
        } else if (i === n) {
            console.log(getLastLine(n));
        } else {
            console.log(
                getStringSpace(n - i)
                + getStringSpace((i - 1) * 2 - 1)
            );
        }
    }
}

main();