Java Utililty Methods List Sum

List of utility methods to do List Sum

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Description

The list of methods to do List Sum are organized into topic(s).

Method

intgetSumOfInts(List ints)
Get the sum of a list of integers 
int sum = 0;
for (double num : ints) {
    sum += num;
return sum;
doublegetSumOfPositiveDoubles(List scores)
Sum up list of doubles, ignores doubles that are negative or zero 
double sum = 0;
for (double score : scores) {
    if (score > 0) {
        sum += score;
return sum;
List>removeOne(List summary, int start)
remove One 
List<List<E>> combinations = new ArrayList<List<E>>();
for (int i = start; i < summary.size(); i++) {
    List<E> combination = new ArrayList<E>(summary);
    combination.remove(i);
    combinations.add(combination);
return combinations;
Listsum(final List list1, final List list2)
Returns the sum of the given lists. 
return subtract(union(list1, list2), intersection(list1, list2));
doublesum(final List list)
Sums a list of numbers. 
double sum = 0;
for (Number number : list) {
    sum += number.doubleValue();
return sum;
intsum(final List list)
sum 
int sum = 0;
for (Integer i : list) {
    sum += i;
return sum;
intsum(int[] list)
sum 
int sum = 0;
for (int x : list)
    sum += x;
return sum;
longsum(List list)
Sum List array 
long sum = 0;
for (Object i : list) {
    sum += ((Length) i).length();
return sum;
doublesum(List a)
sum 
if (a.size() > 0) {
    double sum = 0;
    for (Double i : a) {
        sum += i;
    return sum;
return 0;
...
doublesum(List data)
sum 
double v = 0.0;
for (int i = 0; i < data.size(); i++)
    v += data.get(i);
return v;