package com.example.google.guava.demo.clazz;

import com.google.common.collect.ContiguousSet;

import com.google.common.collect.DiscreteDomain;

import com.google.common.collect.Range;

import com.google.common.primitives.Ints;

/**

 * <p>

 * <code>RangeTest</code>

 * </p>

 * Description:

 *

 * @author Mcchu

 * @date 2017/10/19 9:06

 */

public class RangeTest {

    public static void main(String[] args) {

        testRange();

    }

    private static void testRange(){

        // 1. 使用 Range.closed () 创建范围: [a,b] = { x | a <= x <= b}

        Range<Integer> range1 = Range.closed(0, 9);

        System.out.println("新建数据范围range1："+range1);

        printRange(range1);

        // 1.1 包含关系

        Boolean containVal = range1.contains(1);

        Boolean containAllVal1 = range1.containsAll(Ints.asList(1,3,5));

        Boolean containAllVal2 = range1.containsAll(Ints.asList(1,3,5,12));

        System.out.println("是否包含1："+containVal);

        System.out.println("是否包含1，3，5："+containAllVal1);

        System.out.println("是否包含1，3，5，12："+containAllVal2);

        // 1.2 边界值

        Boolean bol1 = range1.hasLowerBound();

        Boolean bol2 = range1.hasUpperBound();

        System.out.println("是否存在最小边界值："+bol1);

        System.out.println("是否存在最大边界值："+bol2);

        Integer lower = range1.lowerEndpoint();

        Integer upper = range1.upperEndpoint();

        System.out.println("最小边界值："+lower);

        System.out.println("最大边界值："+upper);

        System.out.println();

        // 2. 使用 Range.open () 创建范围: (a,b) = { x | a < x < b}

        Range<Integer> range2 = Range.open(0,9);

        System.out.println("新建数据范围range2："+range2);

        printRange(range2);

        System.out.println();

        // 3. 使用 Range.openClosed () 创建范围： (a,b] = { x | a < x <= b}

        Range<Integer> range3 = Range.openClosed(0, 9);

        System.out.println("新建数据范围range3："+range3);

        printRange(range3);

        System.out.println();

        // 4. 使用 Range.closedOpen () 创建范围： [a,b) = { x | a <= x < b}

        Range<Integer> range4 = Range.closedOpen(0, 9);

        System.out.println("新建数据范围range4："+range4);

        printRange(range4);

        System.out.println();

        // 5. 右无穷大 a>9

        Range<Integer> range5 = Range.greaterThan(9);

        System.out.println("新建数据范围range5："+range5);

        // 5.1 边界值

        Boolean bol3 = range5.hasLowerBound();

        Boolean bol4 = range5.hasUpperBound();

        System.out.println("是否存在最小边界值："+bol3);

        System.out.println("是否存在最大边界值："+bol4);

        Integer lower1 = range5.lowerEndpoint();

        //Integer upper1 = range5.upperEndpoint (); // 抛 java.lang.IllegalStateException: range unbounded on this side

        System.out.println("最小边界值："+lower1);

        //System.out.println ("最大边界值："+upper1);

        System.out.println();

        // 6. 子范围

        Range<Integer> range6 = Range.closed(3, 5);

        System.out.println("新建数据范围："+range6);

        printRange(range6);

        Boolean subRange = range1.encloses(range6);

        System.out.println("范围range1是否包含range6："+subRange);

        System.out.println();

        // 7. 承接关系

        Range<Integer> range7 = Range.closed(9, 20);

        System.out.println("新建数据范围："+range7);

        printRange(range7);

        Boolean connected = range7.isConnected(range1);

        System.out.println("范围range7是否承接range1："+connected);

        System.out.println();

        // 8. 范围交叉，取交集、并集

        Range<Integer> range8 = Range.closed(5, 15);

        Range<Integer> intersection = range1.intersection(range8);

        System.out.println("范围range1和range8的交集："+intersection);

        printRange(intersection);

        Range<Integer> span = range1.span(range8);

        System.out.println("范围range1和range8的并集："+span);

        printRange(span);

    }

    private static void printRange(Range<Integer> range){

        System.out.print("具体数据范围：");

        System.out.print("[ ");

        for(int grade : ContiguousSet.create(range, DiscreteDomain.integers())) {

            System.out.print(grade +" ");

        }

        System.out.println("]");

    }

}