Java List Truncate trunc(List as, int length)

License

Declaration

public static <A> List<A> trunc(List<A> as, int length) 

Method Source Code

//package com.java2s;
/*/*from  w  ww . j a v  a  2s  . c o m*/
 * Copyright 2012 Andy Boothe
 *
 *   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.
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    public static <A> List<A> trunc(List<A> as, int length) {
        if (length < as.size())
            remove(as, length, as.size());
        return as;
    }

    public static <A> List<A> remove(List<A> as, int start, int end) {
        List<A> result = new ArrayList<A>(as.subList(start, end));
        for (int i = 0; i < end - start; i++)
            as.remove(start);
        return result;
    }
}

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