Conditionals & Loop Cleanliness

if (numbers != null) {
    if (numbers.length > 0) {
        process(numbers);
    }
}

if (numbers == null || numbers.length == 0) {
    return;
}
process(numbers);

Flat code > nested code.

---

Loop Cleanliness

int value = numbers[index];
currentSum = Math.max(value, currentSum + value);

Enhanced loop when index not needed:

for (int number : numbers) {
    totalSum += number;
}