Java Utililty Methods Array Sum

double[] sum = new double[xs1.length];
for (int i = 0; i < xs1.length; i++) {
    sum[i] = xs1[i] + xs2[i];
return sum;

long suma = 0;
for (int i = 0; i < vector.length; i++) {
    suma += vector[i];
return suma;

int result = 0;
for (int i = 0; i < array.length; i++) {
    result += array[i];
return result;

long sum = 0L;
for (byte aByteArray : byteArray) {
    sum += (int) aByteArray;
return sum;

double total = 0;
for (int i = 0; i < array.length; i++) {
    total += array[i];
return total;

Arrays.sort(x);
double sum = 0;
for (int i = 0; i < x.length; i++)
    sum += Math.abs((x[i] - x[0]) / (x[x.length - 1] - x[0]) - (i + 0.5) / x.length);
return sum;

int result = 0;
for (final int i : digits) {
    result += decimalDigit(value, i);
return result;

double sum = 0.0;
for (double d : double_array)
    sum += Math.abs(d);
return sum;

Double sum = 0.0;
for (int i = 0; i < ds.length; i++)
    sum += ds[i];
return sum;

int sum = 0;
if (FACTORS.length == numbers.length) {
    for (int i = 0; i < numbers.length; i++) {
        for (int j = 0; j < FACTORS.length; j++) {
            if (i == j) {
                sum = sum + numbers[i] * FACTORS[j];
return sum;