课堂小测

求数组的最大子数组阶段2

在阶段一的基础上加了文件的操作

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class T2 {
    public static int max(int a,int b) {
        return a>b?a:b;
    }

    public static void main(String[] args) throws IOException {
        int[] a=new int[10010];
        int[] res=new int[10010];
        int n;
        BufferedReader br= new BufferedReader(new FileReader("E:\\untitled3\\data\\input"));
        String str = new String();
        int count = 0;

        StringBuffer temp = new StringBuffer();

        while((str = br.readLine()) != null){
            count++;
            if(count >= 3) {

                temp.append(str);

            }


        }

        String str2 = temp.toString();


        String[] str3 = new String[10010];
        str3 = str2.split(",");

         n = str3.length;

        for(int i=1;i<=n;i++) {
            a[i]=Integer.parseInt(str3[i-1]);
        }
        int k=a[0];
        for(int i=1;i<=n;i++) {
            if(res[i-1]<0) res[i]=a[i];
            else res[i]=a[i]+res[i-1];
            k=max(k,res[i]);
        }

        System.out.println(k);

    }