Java Collection Random Element chooseWithoutCheck(Collection collection, long seed)

Description

choose Without Check

License

Open Source License

Declaration

private static <T> T chooseWithoutCheck(Collection<? extends T> collection, long seed) 

Method Source Code

//package com.java2s;
/*/*from  w  w  w .j av a 2 s  .c o m*/
 * Grakn - A Distributed Semantic Database
 * Copyright (C) 2016  Grakn Labs Limited
 *
 * Grakn is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Grakn is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Grakn. If not, see <http://www.gnu.org/licenses/gpl.txt>.
 */

import java.util.Collection;
import java.util.Optional;
import java.util.Random;

public class Main {
    private static <T> T chooseWithoutCheck(Collection<? extends T> collection, long seed) {
        int index = new Random(seed).nextInt(collection.size());
        Optional<? extends T> result = collection.stream().skip(index).findFirst();
        assert result.isPresent();
        return result.get();
    }
}

Related

1. chooseElement(Collection elements, T alternative)
2. chooseRandomThing(Collection possibleroutes)
3. generateMetricsDataWithAllWrongTypes(String metricPostfix, boolean generateRandomTenant, long collectionTime)
4. generateMetricsDataWithPartialWrongTypes(String metricPostfix, boolean generateRandomTenant, long collectionTime)
5. getRandom(Collection collection)
6. getRandomNumber(Collection collection, int number)