Java Utililty Methods Array Sum

for (int i = 0; i < freq.length; i++) {
    sumFreq[i] += freq[i];

float sum = 0.0f;
for (float aa : a) {
    sum += Math.ceil(aa);
return sum;

if (a == null)
    return 0.0;
if (a.length == 0)
    return 0.0;
double ret = 0.0;
for (int i = 0; i < a.length; i++) {
    ret += a[i];
return ret;

double sum = 0;
for (double num : arr) {
    sum += num;
return sum;

double sum = 0;
for (double v : input)
    sum = sum + v;
return sum;

float sum = 0.0f;
for (float aa : a) {
    sum += aa;
return sum;

int r = 0;
for (int i : intArray) { 
    if (flag == 0 && i < 0) { 
        throw new IllegalArgumentException("all integers in array must be positive");
    } else if (flag == 1 && i > 0) { 
        throw new IllegalArgumentException("all integers in array must be negative");
    r += i;
...

int sum = 0;
for (int val : array)
    sum += val;
return sum;

int ges = 0;
for (int value : array)
    ges += value;
return ges;

if (a == null)
    throw new Exception("Array is null.");
else {
    int sum = 0;
    for (int i = 0; i < a.length; i++)
        sum += a[i];
    return sum;