package?OS;

import?java.util.ArrayList;
import?java.util.List;
import?java.util.Scanner;


/**
?*?@author?:hly
?*?@date?:2018/6/5
?*/
public?class?Groupslinking?{
????//可用磁盤快
????static?int[][]?groupslinking?=?{{3?1?2?3}?{3?4?5?6}?{0?0?0?0}?{0?0?0?0}?{2?0?7?0}?{0?0?0?0}?{0?0?0?0}?{0?0?0?0}};
????//當(dāng)前空閑塊
????static?List?freeList?=?new?ArrayList（）?{{
????????for?（int?i?=?1;?i?<=?7;?i++）?{
????????????add（i）;
????????}
????}};

????static?Scanner?scanner?=?new?Scanner（System.in）;

????//分配空閑塊
????public?static?void?allocate（）?{
????????//空閑塊數(shù)分配的盤塊號
????????int?freeNum?allocativeNum;
????????//當(dāng)前組盤塊大于1塊
????????if?（groupslinking[0][0]?>?1）?{
????????????freeNum?=?groupslinking[0][0];
????????????allocativeNum?=?groupslinking[0][freeNum];
????????????groupslinking[0][0]--;
????????????freeList.remove（（Integer）?allocativeNum）;
????????????System.out.println（“分配的塊號為：“?+?allocativeNum）;

????????}

????????else?if?（groupslinking[0][0]?==?1）?{

????????????if?（groupslinking[0][1]?!=?0）?{
????????????????allocativeNum?=?groupslinking[0][1];
????????????????for?（int?j?=?0;?j?nking[allocativeNum].length;?j++）
????????????????????//當(dāng)前組已經(jīng)分配完，下一組拷貝到當(dāng)前組
????????????????????groupslinking[0][j]?=?groupslinking[allocativeNum][j];
????????????????//groupslinking[0][0]--;
????????????????freeList.remove（（Integer）?allocativeNum）;
????????????????System.out.println（“分配的塊號為：“?+?allocativeNum）;

????????????}?else?{
????????????????System.out.println（“已經(jīng)沒有空閑塊了“）;
????????????????return;
????????????}
????????}
????????else?{
????????????System.out.println（“當(dāng)前組已經(jīng)分配完了“）;
????????}
????????display（）;
????}

????//回收空閑塊
????public?static?void?recycling（）?{
????????int?freeNum;
????????System.out.println（“請輸入你想回收的空閑盤塊的盤塊號:“）;
????????int?recyclingNum?=?scanner.nextInt（）;
????????for?（int?i?=?0;?i?????????????if?（freeList.get（i）?==?recyclingNum）?{
????????????????System.out.println（“該空閑塊已經(jīng)存在“）;
????????????????return;
????????????}
????????}
????????//當(dāng)前組不滿3塊
????????if?（groupslinking[0][0]?????????????freeNum?=?groupslinking[0][0];
????????????groupslinking[0][++freeNum]?=?recyclingNum;
????????????freeList.add（recyclingNum）;
????????????groupslinking[0][0]++;
????????}?else?{
????????????for?（int?j?=?0;?j?<=?3;