function maxSubarray(array) {
    const getMaxSubsum = array => {
        let maxSum = -Infinity;
        array.reduce((sum, value) => {
            sum += value;
            maxSum = Math.max(maxSum, sum);
            return (sum > 0) ? sum : 0;
        }, 0);
        return maxSum;
    };
    const getMaxSubsequence = array => {
        array.sort((a, b) => a - b);
        return (array.at(-1) < 0) ? array.at(-1) : array.filter(value => value >= 0).reduce((sum, value) => sum + value);
    };
    return [getMaxSubsum(array), getMaxSubsequence(array)];
}