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Java 在实现bubbleSort后未获得正确的输出_Java_Io_Bubble Sort - Fatal编程技术网

Java 在实现bubbleSort后未获得正确的输出

Java 在实现bubbleSort后未获得正确的输出,java,io,bubble-sort,Java,Io,Bubble Sort,该程序创建一个名为datafile.txt的文件,并使用文本I/O将随机创建的100个整数写入该文件。我还实现了bubbleSort以升序对数字进行排序,但它没有对数字进行排序。另外,命令行的输出是“排序的数字是:[I@f72617“100次,谢谢你 import java.io.*; import java.util.Random; public class Lab5 { //sort array static int[] bubbleSort(int[] array)

该程序创建一个名为datafile.txt的文件,并使用文本I/O将随机创建的100个整数写入该文件。我还实现了bubbleSort以升序对数字进行排序,但它没有对数字进行排序。另外,命令行的输出是“排序的数字是:[I@f72617“100次,谢谢你

   import java.io.*;
   import java.util.Random;

   public class Lab5 {

//sort array
static int[] bubbleSort(int[] array) {

    for (int pass = 1; pass <= 100; pass++) {
        for (int current = 0; current < 100-pass; current++) {

            //compare element with next element
            if (array[current] > array[current + 1]) {

                //swap array[current] > & array[current + 1]
                int temp = array[current];
                array[current] = array[current + 1];
                array[current + 1] = temp;
            } //end if
        }
    }
    return array;
}
public static void main(String args[]) {

    //Open file to write to
    try {
        FileOutputStream fout = new FileOutputStream("F:\\IT311\\datafile.txt");


    int index = 0;

    //Convert FileOutputStream into PrintStream 
    PrintStream myOutput = new PrintStream(fout);
    Random numbers = new Random();
        //Declare array
        int array[] = new int[100];
        for (int i = 0; i < array.length; i++)
        {
        //get the int from Random Class
        array[i] = (numbers.nextInt(100) + 1);

        myOutput.print(array[i] + " ");

        //sort numbers
        int[] sortedArray = bubbleSort(array);

        //print sorted numbers
        System.out.print("The sorted numbers are: ");
        System.out.print(sortedArray);
        }
    }
    catch (IOException e) {
        System.out.println("Error opening file: " + e);
        System.exit(1);
    }
}
import java.io.*;
导入java.util.Random;
公共类Lab5{
//排序数组
静态int[]bubbleSort(int[]数组){
for(int pass=1;pass数组[current+1]){
//交换阵列[current]>&阵列[current+1]
int temp=阵列[当前];
数组[当前]=数组[当前+1];
阵列[当前+1]=温度;
}//如果结束,则结束
}
}
返回数组;
}
公共静态void main(字符串参数[]){
//打开要写入的文件
试一试{
FileOutputStream fout=新的FileOutputStream(“F:\\IT311\\datafile.txt”);
int指数=0;
//将FileOutputStream转换为PrintStream
PrintStream myOutput=新的打印流(fout);
随机数=新随机数();
//声明数组
int数组[]=新的int[100];
for(int i=0;i
}

使用以下内容:

System.out.print(Arrays.toString(sortedArray));
而不是

    System.out.print(sortedArray);
使用


第一个是打印数组的地址。第二个将打印数组的每个元素。

我对您的代码做了一些更改,您在每次迭代时都打印数组对象。要打印数组,您需要迭代数组并打印其每个元素。 另外,冒泡排序被修改了&如果您想使用的话,还有附加代码,只是不注释而已

import java.io.*;
import java.util.Arrays;
import java.util.Random;

public class Lab5 {

//sort array
static int[] bubbleSort(int[] array) {

 for (int pass = 0; pass < 100; pass++) {
     for (int current = 1; current < 100-pass; current++) {

         //compare element with next element
         if (array[current-1] > array[current ]) {

             //swap array[current] > & array[current + 1]
             int temp = array[current-1];
             array[current-1] = array[current];
             array[current ] = temp;
         } //end if
     }
 }
 return array;
}
public static void main(String args[]) {

 //Open file to write to
 try {
      FileOutputStream fout = new FileOutputStream("F:\\IT311\\datafile.txt");


 int index = 0;

 //Convert FileOutputStream into PrintStream 
 PrintStream myOutput = new PrintStream(fout);
 Random numbers = new Random();

 // code begin to print random number in file and output sorted array on sysout 
     //Declare array
     int array[] = new int[100];
     for (int i = 0; i < array.length; i++)
     {
     //get the int from Random Class
     array[i] = (numbers.nextInt(100) + 1);

     myOutput.print(array[i] + " ");
     }

     //sorted array using sort function 
//     Arrays.sort(array);

     // sortred using bubble sort
     array=bubbleSort(array);

   //print sorted numbers
     System.out.print("The sorted numbers are: ");
     for (int i = 0; i < array.length; i++)
        {
        int j = array[i];
        System.out.print(j +" " );
        }

  // code end to print random number in file and output sorted array on sysout     



//     code begin to print sorted number in file and output sorted array on sysout
     /*int array[] = new int[100];
     for (int i = 0; i < array.length; i++)
     {
     array[i] = i;
     }
     Arrays.sort(array);
     for (int j = 0; j < array.length; j++)
        {
        int j2 = array[j];
        myOutput.print(j2  + " ");
        System.out.println(j2+" ");
        }
        */

//   code end to print sorted number in file and output sorted array on sysout
 }
 catch (IOException e) {
     System.out.println("Error opening file: " + e);
     System.exit(1);
 }
}
}
import java.io.*;
导入java.util.array;
导入java.util.Random;
公共类Lab5{
//排序数组
静态int[]bubbleSort(int[]数组){
对于(int pass=0;pass<100;pass++){
用于(int电流=1;电流<100次;电流++){
//将元素与下一个元素进行比较
if(数组[current-1]>数组[current]){
//交换阵列[current]>&阵列[current+1]
int temp=阵列[current-1];
数组[current-1]=数组[current];
阵列[当前]=温度;
}//如果结束,则结束
}
}
返回数组;
}
公共静态void main(字符串参数[]){
//打开要写入的文件
试一试{
FileOutputStream fout=新的FileOutputStream(“F:\\IT311\\datafile.txt”);
int指数=0;
//将FileOutputStream转换为PrintStream
PrintStream myOutput=新的打印流(fout);
随机数=新随机数();
//代码开始打印文件中的随机数,并在sysout上输出排序数组
//声明数组
int数组[]=新的int[100];
for(int i=0;i
谢谢。我收到一个错误,“数组”上的“找不到符号系统.out.print(Arrays.toString(sortedArray));”那是因为它的数组,你需要导入java.util.ArrayShanks。那是编译过的,但数字没有排序。哦,对不起。它们在cmd行排序,但不在输出文件中。哦,没关系。我不需要在输出文件中排序。谢谢你的帮助!!!谢谢你所有的时间和精力。我接受了zerocool的建议,“您应该将int[]sortedArray=bubbleSort(数组);保持在for循环之外。反复调用没有意义。只需调用一次它就可以对所有100个元素进行排序。”它成功了。
import java.io.*;
import java.util.Arrays;
import java.util.Random;

public class Lab5 {

//sort array
static int[] bubbleSort(int[] array) {

 for (int pass = 0; pass < 100; pass++) {
     for (int current = 1; current < 100-pass; current++) {

         //compare element with next element
         if (array[current-1] > array[current ]) {

             //swap array[current] > & array[current + 1]
             int temp = array[current-1];
             array[current-1] = array[current];
             array[current ] = temp;
         } //end if
     }
 }
 return array;
}
public static void main(String args[]) {

 //Open file to write to
 try {
      FileOutputStream fout = new FileOutputStream("F:\\IT311\\datafile.txt");


 int index = 0;

 //Convert FileOutputStream into PrintStream 
 PrintStream myOutput = new PrintStream(fout);
 Random numbers = new Random();

 // code begin to print random number in file and output sorted array on sysout 
     //Declare array
     int array[] = new int[100];
     for (int i = 0; i < array.length; i++)
     {
     //get the int from Random Class
     array[i] = (numbers.nextInt(100) + 1);

     myOutput.print(array[i] + " ");
     }

     //sorted array using sort function 
//     Arrays.sort(array);

     // sortred using bubble sort
     array=bubbleSort(array);

   //print sorted numbers
     System.out.print("The sorted numbers are: ");
     for (int i = 0; i < array.length; i++)
        {
        int j = array[i];
        System.out.print(j +" " );
        }

  // code end to print random number in file and output sorted array on sysout     



//     code begin to print sorted number in file and output sorted array on sysout
     /*int array[] = new int[100];
     for (int i = 0; i < array.length; i++)
     {
     array[i] = i;
     }
     Arrays.sort(array);
     for (int j = 0; j < array.length; j++)
        {
        int j2 = array[j];
        myOutput.print(j2  + " ");
        System.out.println(j2+" ");
        }
        */

//   code end to print sorted number in file and output sorted array on sysout
 }
 catch (IOException e) {
     System.out.println("Error opening file: " + e);
     System.exit(1);
 }
}
}