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A general programming library in Java/Android. It's easy to learn and simple to use with concise and powerful APIs.

There is a newer version: 2.1.12

/*
 * Copyright (C) 2016 HaiYang Li
 *
 * 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 com.landawn.abacus.util;

import java.util.Comparator;

import com.landawn.abacus.util.function.BiFunction;

// TODO: Auto-generated Javadoc
/**
 * The Enum Nth.
 *
 * @author Haiyang Li
 * @since 0.8
 */
public enum Nth {

    /** The first. */
    FIRST,
    /** The second. */
    SECOND
    /**
     *
     * @param 
     * @param a
     * @param b
     * @return
     */
    /*, THIRD, FOURTH, FIFTH, SIXTH, SEVENTH*/;
    public static > Nth minFirst(final T a, final T b) {
        return N.compare(a, b) <= 0 ? Nth.FIRST : Nth.SECOND;
    }

    /**
     *
     * @param 
     * @param a
     * @param b
     * @param cmp
     * @return
     */
    public static  Nth minFirst(final T a, final T b, final Comparator cmp) {
        return cmp.compare(a, b) <= 0 ? Nth.FIRST : Nth.SECOND;
    }

    /**
     *
     * @param 
     * @param a
     * @param b
     * @return
     */
    public static > Nth maxFirst(final T a, final T b) {
        return N.compare(a, b) >= 0 ? Nth.FIRST : Nth.SECOND;
    }

    /**
     *
     * @param 
     * @param a
     * @param b
     * @param cmp
     * @return
     */
    public static  Nth maxFirst(final T a, final T b, final Comparator cmp) {
        return cmp.compare(a, b) >= 0 ? Nth.FIRST : Nth.SECOND;
    }

    /**
     * Returns a stateful {@code BiFunction}. Don't cache or reuse it.
     *
     * @param 
     * @return
     */
    public static  BiFunction alternate() {
        return new BiFunction() {
            private final MutableBoolean flag = MutableBoolean.of(true);

            @Override
            public Nth apply(T t, T u) {
                return flag.getAndInvert() ? Nth.FIRST : Nth.SECOND;
            }
        };
    }
}