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ixjava developed by David Karnok

There is a newer version: 1.0.0

/*
 * Copyright 2011-2016 David Karnok
 *
 * Licensed 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.
 */

package ix.internal.operators;

import java.util.*;

public final class Skip implements Iterable {
    final Iterable source;
    
    final int num;

    public Skip(Iterable source, int num) {
        this.source = source;
        this.num = num;
    }
    
    @Override
    public Iterator iterator() {
        @SuppressWarnings("unchecked")
        Iterator it = (Iterator)source.iterator();
        
        int i = num;
        
        while (i > 0) {
            if (!it.hasNext()) {
                return Collections.emptyList().iterator();
            }
            it.next();
            i--;
        }
        
        return it;
    }
}