个人项目编程实验

1.设计一个类(不妨叫做A),实现对一维数组的指定范围内的元素相加运算。
电脑上没有c++开发软件,用Java做这个实验咯。
 import java.util.Scanner;
  public class A {
      public static void main(String[] args) {
          int[] aa = { -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 };
         int sum = 0;
         Scanner a = new Scanner(System.in);
        System.out.println("开始数(<=100):");
         int start = a.nextInt();
         System.out.println("结束数(<=100):");
         int end = a.nextInt();         System.out.println("开始数" + start + "结束数" + end + "和为:");

        for (int i = start - 1; i < end; i++)
            // 第一个是aa[0]
             sum += aa[i];
        System.out.println(aa[start - 1] + "+...+" + aa[end - 1] + "=" + sum);
 
     }
 }

 数组长度:100,范围:实验数据A列:1~100。

2. 设计一个类(不妨叫做B ),实现对二维数组(a[N][M])的指定范围内的元素相加运算。  数组长度:(N*M 约等于200)A、B列:1~100;

 import java.util.Scanner;
 public class B {
      public static void main(String[] args) {
         int[][] b = {
               { -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 bb = new Scanner(System.in);
        System.out.println("开始列:");
         int startI = bb.nextInt();
       System.out.println("结束列:");
        int endI = bb.nextInt();
        System.out.println("开始行:");
        int startJ = bb.nextInt();
         System.out.println("结束行:");
         int endJ = bb.nextInt();
         System.out.println("开始列" + startI + "结束列" + startJ + "开始行" + endI + "结束行"
                 + endJ + "和为:");

         for (int i = startI - 1; i < endI; i++)
         {
             for (int j = startJ - 1; j < endJ ; j++)
             {
                 sum += b[i][j];
            }
         }
         System.out.println(b[startI - 1][startJ - 1] + "+...+"
                 + b[endI - 1][endJ - 1] + "=" + sum);
    }
 }

3.实验心得

对于这个作业一开始我是很恐惧的,毫无头绪。一维数组和二维数组通过网络的查询,书籍的翻阅,还有和韩峰同学的讨论 才勉强写出这俩个程序,使用的是Java语言。我知道这个程序可以更加优化,但我凭我现在的能力很难,让我知道了学无止境。我使用的是Java中type【】arrayName的定义方法,这种方式对于我来说更容易理解点。对于数组也有了自己的小小的感觉,如同数学中的象限x,y。3维就是空间了咯?那我又多想了4维呢,5呢。。。。还是不太明白。还是学的不够多,得努力!!!

posted @ 2015-09-22 19:45  LoveSamoyed  阅读(191)  评论(2编辑  收藏  举报