Java Utililty Methods List Random Item

List of utility methods to do List Random Item

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Description

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

Method

ListresampleWithReplacement(final List l, final int n)
resample With Replacement 
return resampleWithReplacement(l, n, new Random());
Esample(List l, Random r)
sample 
int i = r.nextInt(l.size());
return l.get(i);
Tsample(Random random, List list)
sample 
return list.get(random.nextInt(list.size()));
ListsampleRandomSublist(List list, int sampleSize)
sample Random Sublist 
int size = list.size();
if (sampleSize >= size) {
    List<T> sublist = new ArrayList<T>(list);
    Collections.shuffle(sublist);
    return sublist;
List<T> sublist = new ArrayList<T>();
Random random = new Random();
...
ListsampleWithoutReplacement(List items, int sampleSize)
sample Without Replacement 
if (sampleSize > items.size()) {
    return items;
Random random = new Random();
List<T> sample = new ArrayList<T>();
for (int i = 0; i < sampleSize; i++)
    sample.add(items.remove(random.nextInt(items.size())));
return sample;
...
ArrayListsampleWithReplacement(final Random random, final List data, final int sampleSize)
Samples a a given number of items from a list with replacement. 
final ArrayList<DataType> result = new ArrayList<DataType>(sampleSize);
sampleWithReplacementInto(random, data, sampleSize, result);
return result;
voidsampleWithReplacementInto(final Random random, final List data, final int sampleSize, final Collection result)
Samples a a given number of items from a list with replacement and puts the samples into the given collection. 
final int dataSize = data.size();
for (int i = 0; i < sampleSize; i++) {
    final int randomIndex = random.nextInt(dataSize);
    result.add(data.get(randomIndex));
intsoftMaxIndex(Random rand, int listSize, double temperature)
soft Max Index 
double rnd = rand.nextDouble();
double total = 0.0d;
double[] values = new double[listSize];
int j = listSize + 1;
for (int i = 0; i < listSize; i++) {
    double val = j;
    j--;
    values[i] = Math.exp(val / temperature);
...