Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.HashSet;

public class Main {
    /**
     * Extract a set of Integer indices into an int[].
     * 
     * @param coll
     *            {@code HashSet} of {@code Integer}
     * @return int[]
     * @since 3.0.1
     */
    public static int[] extractIndices(HashSet<Integer> coll) {
        int[] result = new int[coll.size()];
        int i = 0;
        for (Integer index : coll) {
            result[i++] = index.intValue();
        }
        return result;
    }
}