package yiweishuzu;import java.util.Scanner;public class Shuzu {public static void main(String[] args){int n=0;int LONG=20;//数量int FANWEI=10;//   n  :    -n   ~   +nint step = 0;int number = 0;int a=1;Scanner input=new Scanner(System.in);String[] Content = new String[LONG];int [] num=new int[LONG];int []kuai=new int[LONG];System.out.println("原数组：");for(int k=0;k<LONG;k++){num[k]=(int)(1+Math.random()*FANWEI*2)-FANWEI;System.out.println(num[k]);}System.out.println("—————————————————————————————————————————————————————————————————————————————");//int [] num= {1,8,5,-6,9,-7,-9,4,5,-9,-3,4,-5,4};int i=0,t=0;int sum=0,max=0,aMax=num[0];//从第一个开始加直到最大，中途记录for(i=0;i<num.length;i++)//起始
        {Content[i] = "当前执行第 "+i+" 步,\n";t=0;max=num[t];//赋初值for(sum=num[t+i];t<num.length-i-1;t++)//加
            {if(max<=sum)//比较，记录最大
                {max=sum;}//System.out.println(sum);sum=sum+num[t+1+i];int s=i+t;Content[i]+="已经检查 "+(n++)+" 个子数组,";Content[i]+="从下标 "+i+" 到 "+s+" 的子数组总和是："+sum+",\n";}if(aMax<=max){aMax=max;}//System.out.println("");Content[i]+="到第 "+i+" 步为止的最大子数组和为："+aMax+"\n";}System.out.println("END："+aMax);System.out.println("————————————————————————————————————————————————————————————————————————————");System.out.println("请输入操作");System.out.println("1.直接运行\n2.单步运行\n3.跳转到指定步骤\n4.退出\n");do{try{number = input.nextInt();}catch(Exception e){System.out.println("请输入整型序号");}switch(number){case 1:for(int k=step;k<LONG;k++){System.out.println(Content[k]);try {Thread.sleep(1000);} catch (InterruptedException e) {// TODO Auto-generated catch block
                            e.printStackTrace();}}step = LONG-1;break;case 2:System.out.println(Content[step]);break;case 3:System.out.println("请输入步骤数");step = input.nextInt();System.out.println(Content[step]);break;case 4:return;default:System.out.println("请输入正确的序号");break;}if(step < LONG-1){System.out.println("1.直接运行（剩余步骤）\n2.单步运行（剩余步骤）\n3.跳转到指定步骤（剩余步骤）\n4.退出\n");step++;}if(step == LONG-1){String judge = null;System.out.println("————————————————————————————————————————————————————————————————————————————");System.out.println("运行步骤已全部执行完,是否回到初始页面(Y/N)");judge = input.next();switch(judge){case "Y":step = 0;System.out.println("1.直接运行\n2.单步运行\n3.跳转到指定步骤\n4.退出\n");break;case "N":return;default:System.out.println("请输入正确的字母");break;}}}while(a==1);for(int k=0;k<LONG;k++){System.out.println(Content[k]);}}
}