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package com.github.andyshao.lang;

import java.util.Comparator;

/**
 * 
 * 
 * Title:

 * Descript:

 * Copyright: Copryright(c) Apr 11, 2019

 * Encoding: UNIX UTF-8
 * 
 * @author Andy.Shao
 *
 */
public final class ComparableOperation {
	private ComparableOperation() {}

	/**
	 * Reverse {@link java.util.Comparator}
	 * @param comparaRet compare result
	 * @return reverse result
	 */
	public static final int reversed(int comparaRet) {
		if(comparaRet < 0) return 1;
		else if(comparaRet > 0) return -1;
		else return 0;
	}

	/**
	 * Reveese {@link Comparator}
	 * @param origin origin {@link Comparator}
	 * @return reverse {@link Comparator}
	 * @param  data type
	 */
	public static final  Comparator reverse(Comparator origin) {
		return (o1, o2) -> reversed(origin.compare(o1, o2));
	}
}