20202328马文瑞实验报告七

课程：《程序设计与数据结构》
班级： 2023
姓名：马文瑞
学号：20202328
实验教师：王志强
实验日期：2021年11月14日
必修/选修：必修

定义一个Searching和Sorting类，并在类中实现linearSearch,SelectionSort方法，最后完成测试。

要求不少于10个测试用例，提交测试用例设计情况（正常，异常，边界，正序，逆序），用例数据中要包含自己学号的后四位

提交运行结果图。

（一）searching

代码：

package com.company;

public class Searching {
    private int List[];
    private int searchElement;
    private int listSize;
    private int locate;
    public Searching(int[] list, int searchElement)
    {
        List = list;
        this.searchElement = searchElement;
        listSize= List.length;
    }
    public int linearSearch(){
        for (int i=listSize-1;;i--){
            if (searchElement==List[i]){
                locate=i;
                return List[i];
            }
            else if (i==0){
                return 0;
            }
        }
    }
}

SearchTest

import com.company.Searching;

public class SearchTest {
    public static void main(String[] args) {
        int a1[]={1,2,3,4,5,6,7,8,9,2328};
        int a2[]={9,8,7,6,5,4,3,2,1,2328};
        int a3[]={23,8,445,6,5,45,3,2,98,2328};
        int a4[]={6,8,7,243,5,4,3,2,43,2328};
        int a5[]={24,8,7,6,5,4,3,2,76,2328};
        int a6[]={12,8,7,233,5,4,3,2,43,2328};
        int a7[]={3245,9,8,34,6,5,4,3,2,12,2328};
        int a8[]={43,8,7,6,5,23,3,2,24,2328};
        int a9[]={65,8,7,56,5,4,3,2,234,2328};
        int a10[]={46,8,7,32,5,4,3,2,2,2328};
        System.out.println("线性查找：");
        System.out.println(new Searching(a1,4).linearSearch());//正常
        System.out.println(new Searching(a1,1).linearSearch());//边界
        System.out.println(new Searching(a1,2328).linearSearch());//边界
        System.out.println(new Searching(a1,999).linearSearch());//异常,输出0
        System.out.println();
        System.out.println(new Searching(a2,4).linearSearch());//正常
        System.out.println(new Searching(a2,9).linearSearch());//边界
        System.out.println(new Searching(a2,2328).linearSearch());//边界
        System.out.println(new Searching(a2,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a3,243).linearSearch());//正常
        System.out.println(new Searching(a3,6).linearSearch());//边界
        System.out.println(new Searching(a3,2328).linearSearch());//边界
        System.out.println(new Searching(a3,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a4,4).linearSearch());//正常
        System.out.println(new Searching(a4,1).linearSearch());//边界
        System.out.println(new Searching(a4,2328).linearSearch());//边界
        System.out.println(new Searching(a4,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a5,4).linearSearch());//正常
        System.out.println(new Searching(a5,24).linearSearch());//边界
        System.out.println(new Searching(a5,2328).linearSearch());//边界
        System.out.println(new Searching(a5,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a6,4).linearSearch());//正常
        System.out.println(new Searching(a6,12).linearSearch());//边界
        System.out.println(new Searching(a6,2328).linearSearch());//边界
        System.out.println(new Searching(a6,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a7,4).linearSearch());//正常
        System.out.println(new Searching(a7,3245).linearSearch());//边界
        System.out.println(new Searching(a7,2328).linearSearch());//边界
        System.out.println(new Searching(a7,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a8,23).linearSearch());//正常
        System.out.println(new Searching(a8,43).linearSearch());//边界
        System.out.println(new Searching(a8,2328).linearSearch());//边界
        System.out.println(new Searching(a8,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a9,4).linearSearch());//正常
        System.out.println(new Searching(a9,65).linearSearch());//边界
        System.out.println(new Searching(a9,2328).linearSearch());//边界
        System.out.println(new Searching(a9,999).linearSearch());//异常
        System.out.println();
        System.out.println(new Searching(a10,4).linearSearch());//正常
        System.out.println(new Searching(a10,46).linearSearch());//边界
        System.out.println(new Searching(a10,2328).linearSearch());//边界
        System.out.println(new Searching(a10,999).linearSearch());//异常
    }}

结果：

（二） sorting

import java.util.Arrays;

public class Sorting {
    private int List[];
    private int size;
    public Sorting(int[] list) {
        List = list;
size=List.length;
}
    public String selectionSort(){
        int temp,tempx;
        for (int i=0;i<size-1;i++){
            temp=i;
            for (int j=i+1;j<size;j++){
                if (List[temp]>List[j]){
                    temp=j;
}
            }
            if (temp == 0) {
                continue;
}
            else {
                tempx=List[i];
List[i]=List[temp];
List[temp]=tempx;
}
        }
        return Arrays.toString(List) ;
}
}

SortTest

public class SortTest {
    private static int a1[]={1,2,3,4,5,6,7,8,9,2328};//正序
private static int a2[]={2328,9,8,7,6,5,4,3,2,1};//逆序
private static int a3[]={23,8,445,6,5,45,3,2,98,2328};
    private static int a4[]={6,8,7,243,5,4,3,2,43,2328};
    private static int a5[]={24,8,7,6,5,4,3,2,76,2328};
    private static int a6[]={12,8,7,233,5,4,3,2,43,2328};
    private static int a7[]={3245,9,8,34,6,5,4,3,2,12,2328};
    private static int a8[]={43,8,7,6,5,23,3,2,24,2328};
    private static int a9[]={65,8,7,56,5,4,3,2,234,2328};
    private static int a10[]={46,8,7,32,5,4,3,2,2,2328};
    public static void main(String[] args) {
        System.out.println(new Sorting(a1).selectionSort());
System.out.println(new Sorting(a2).selectionSort() );
System.out.println(new Sorting(a3).selectionSort() );
System.out.println(new Sorting(a4).selectionSort() );
System.out.println(new Sorting(a5).selectionSort() );
System.out.println(new Sorting(a6).selectionSort() );
System.out.println(new Sorting(a7).selectionSort() );
System.out.println(new Sorting(a8).selectionSort() );
System.out.println(new Sorting(a9).selectionSort() );
System.out.println(new Sorting(a10).selectionSort() );
}
}

结果：

重构你的代码

把Sorting.java Searching.java放入 cn.edu.besti.cs2023.（姓名首字母+四位学号）包中（例如：cn.edu.besti.cs1823.G2301）

把测试代码放test包中

重新编译，运行代码，提交编译，运行的截图（IDEA，命令行两种）

参考http://www.cnblogs.com/maybe2030/p/4715035.html ，学习各种查找算法并在Searching中补充查找算法并测试

提交运行结果截图

import junit.framework.TestCase;
public class Test extends TestCase {
    Searching a = new Searching();
    Sorting b = new Sorting();
    @org.junit.Test
    public void testSearching()
    {
        int[] t1 = {19,14,23,1,68,20,84,27,55,11,10,2328};
        assertEquals(false,a.linearSearch(t1,9,12));            //正常
        assertEquals(true,a.linearSearch(t1,1,12));             //正常
        assertEquals("Abnormal",a.linearSearch(t1,1,18));       //异常
        assertEquals(true,a.linearSearch(t1,2328,12));            //边界
        int[] t2 = {5,2,7,43,21,65,2328};
        assertEquals(true,a.linearSearch(t2,2,7));
        assertEquals(false,a.linearSearch(t2,42314,7));
        assertEquals("Abnormal",a.linearSearch(t2,1,18));
        assertEquals(true,a.linearSearch(t2,5,7));
        int[] t3 = {1,24,5,5,2,2,45,2328};
        assertEquals(true,a.linearSearch(t3,24,8));
        assertEquals(false,a.linearSearch(t3,0,8));
        assertEquals("Abnormal",a.linearSearch(t3,1,18));
        assertEquals(true,a.linearSearch(t3,2328,8));
        int[] t4 = {2,423,42,435,32,45,4,43,2328};
        assertEquals(true,a.linearSearch(t4,4,9));
        assertEquals(false,a.linearSearch(t4,123,9));
        assertEquals("Abnormal",a.linearSearch(t4,1,18));
        assertEquals(true,a.linearSearch(t4,2328,9));
        int[] t5 = {967,65,5687,56,332,46,2328};
        assertEquals(true,a.linearSearch(t5,332,7));
        assertEquals(false,a.linearSearch(t5,12,7));
        assertEquals("Abnormal",a.linearSearch(t5,1,18));
        assertEquals(true,a.linearSearch(t5,967,7));
    }
    @org.junit.Test
    public void testSorting(){
        Comparable[] t6 = {1,2,4,67,3,2328};
        b.selectionSort(t6);
        assertEquals("1 2 3 4 67 2328 ",b.print(t6));
        Comparable[] t7 = {1,4,8,2,9,2328};
        b.selectionSort(t7);
        assertEquals("1 2 4 8 9 2328 ",b.print(t7));
        Comparable[] t8 = {1,2,6,8,9,2328};
        b.selectionSort(t8);
        assertEquals("1 2 6 8 9 2306 ",b.print(t8));
        Comparable[] t9 = {30,27,24,13,2306};
        b.selectionSort(t9);
        assertEquals("13 24 27 30 2328 ",b.print(t9));
        Comparable[] t10 = {99,98,92,2328};
        b.selectionSort(t10);
        assertEquals("92 98 99 2328 ",b.print(t10));
        Comparable[] t11 = {20,23,28};
        b.selectionSort(t11);
        assertEquals("28 20 23 ",b.print(t11));              
    }
}

20202328马文瑞实验报告七

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