Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * 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.Collections;

import java.util.List;

public class Main {
    public static int hashCode(List list) {
        if (list == null) {
            return 0;
        }
        if (list.isEmpty()) {
            return 1;
        }
        ArrayList<?> tmp = new ArrayList<>(list);
        Collections.sort(tmp, (o1, o2) -> Integer.compare(o1.hashCode(), o2.hashCode()));
        return tmp.hashCode();
    }
}