第二次作业

package 数组1;
import java.util.Scanner
public class A {public static void main(String[]args)
{
int[] arr1={-2574,-4010,8243,771,2447,-5197,2556,8044,3314,3617,6065,-2817,3131,6318,2186,-113,629,-2582,-37,-1520,164,2055,-5936,5912,1717,5988,4781,5757,892,-4394,8034,2213,-1080,-2080,5364,106,2657,566,3940,-5116,4583,1806,6555,2621,-7197,528,1626,18,1049,6243,3198,4397,-1325,9087,936,-6291,662,-178,135,-3473,-2385,-165,1713,-7949,-4234,1138,2212,104,6968,-3632,3801,1137,-1296,-1215,4272,6223,-5922,-7723,7044,-2938,-8180,1356,1159,-4022,-3713,1158,-8715,-4081,-2541,-2555,-2284,461,940,6604,-3631,3802,-2037,-4354,-1213,767};/此数据直接copy
int sum=0;
Scanner se = new Scanner(System.in) ;
System.out.println("请输入start:");
int start = se.nextInt() ;
System.out.println("请输入end:");
int end =se.nextInt();
System.out.println("start为：" +start);
System.out.println("end为：" +end);
for(int i=start;i<=end;i++)
sum+=arr1[i];
System.out.println(sum);
}
}

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package 数组2;

import java.util.Scanner;

public class B {

public static void main(String[]args){
int[][] a={{-2574,-4010,8243,771,2447,-5197,2556,8044,3314,3617,6065,-2817,3131,6318,2186,-113,629,-2582,-37,-1520,164,2055,-5936,5912,1717,5988,4781,5757,892,-4394,8034,2213,-1080,-2080,5364,106,2657,566,3940,-5116,4583,1806,6555,2621,-7197,528,1626,18,1049,6243,3198,4397,-1325,9087,936,-6291,662,-178,135,-3473,-2385,-165,1713,-7949,-4234,1138,2212,104,6968,-3632,3801,1137,-1296,-1215,4272,6223,-5922,-7723,7044,-2938,-8180,1356,1159,-4022,-3713,1158,-8715,-4081,-2541,-2555,-2284,461,940,6604,-3631,3802,-2037,-4354,-1213,767},{2740,-4182,-5632,-2966,-1953,567,-8570,1046,2211,1572,-2503,-1899,3183,-6187,3330,3492,-464,-2104,316,8136,470,50,466,-1424,5809,2131,6418,-3018,6002,-8379,1433,1144,2124,1624,-602,-5518,5872,870,-5175,-3961,-427,-6284,2850,481,6175,141,-766,-1897,-748,-4248,366,4823,3003,1778,3256,2182,2253,5076,5540,-2650,2451,-1875,5482,-6881,-329,-969,-8032,-2093,612,1524,-5492,5758,-7401,-5039,3241,6338,3581,4321,-1072,4942,2131,210,-7045,-7514,7450,-1142,-2666,-4485,-639,2121,-5298,-3805,-1686,-2520,-1680,2321,-4617,-1961,2076,7309}};
int sum=0;
Scanner se = new Scanner(System.in);
System.out.println("输入start-y：");
int start1 = se.nextInt();
System.out.println("输入end-y:");
int end1 =se.nextInt();
System.out.println("start-y：" +start1);
System.out.println("end-y：" +end1);

System.out.println("输入start-x：");
int start2 = se.nextInt();
System.out.println("输入end-x:");
int end2 =se.nextInt();
System.out.println("start-x：" +start2);
System.out.println("end-x：" +end2);
for(int i=start1;i<=end1;i++)
{
for(int j=start2;j<=end2;j++)
{
sum+=a[i][j];
}
}
System.out.println(sum);
}

}

说实话开始刚开始误解了题目的意思，后来问了人才知道是要做什么，不过还是不怎么会，一直在烦同学搞了很久才勉勉强强弄出一些，到现在还是不太懂。只能慢慢做了！！