[英]Running into issue with reading integer file into an array and bubble sort
我在編譯之前沒有收到任何錯誤,一切都在運行,但我的輸出應該是文本文件中的幾個整數,而不是一堆隨機字符和數字。 我不確定出了什么問題,但我的任務是將整數文件讀取到數組中,然后使用冒泡排序方法進行排序。 輸出結果為:Sorted Array order: [I@42a57993Sorted Array order: [I@42a57993Sorted Array order: [I@42a57993. 就我而言,任何幫助都是很好的幫助。 謝謝。
import java.io.File;
import java.io.FileNotFoundException;
public class Array {
public static void main(String[] args) {
int[] arr = new int[10];
int i = 0;
Scanner input = new Scanner(System.in);
try {
System.out.print("Enter the file name:");
String fileName = input.next();
Scanner readFile = new Scanner(new File(fileName));
while (readFile.hasNext()) {
try {
arr[i] = readFile.nextInt();
i++;
} catch (InputMismatchException e) {
readFile.next();
}
bubbleSort(arr);
System.out.print("Sorted Array order: " + arr);
input.close();
}}catch(FileNotFoundException e) {
System.out.println("Error occured");
e.printStackTrace();
}
}
static void bubbleSort(int[] arr) {
int n = arr.length;
int temp = 0;
for(int i=0; i < n; i++){
for(int j=1; j < (n-i); j++){
if(arr[j-1] > arr[j]){
temp = arr[j-1];
arr[j-1] = arr[j];
arr[j] = temp;
}
}
}
}}
稍微修改了一下,似乎得到了正確的輸出
package com.kanhaiyakumawat.stackoverflow;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Array {
public static void main(String[] args) {
int[] arr = new int[10];
int i = 0;
Scanner input = new Scanner(System.in);
try {
System.out.print("Enter the file name:");
String fileName = input.next();
Scanner readFile = new Scanner(new File(fileName));
while(readFile.hasNext()) {
try {
arr[i] = readFile.nextInt();
i++;
} catch(InputMismatchException e) {
readFile.next();
}
}
bubbleSort(arr);
System.out.print("Sorted Array order: " + Arrays.toString(arr));
} catch(FileNotFoundException e) {
System.out.println("Error occured");
e.printStackTrace();
}finally {
input.close();
}
}
static void bubbleSort(int[] arr) {
int n = arr.length;
int temp = 0;
for(int i = 0; i < n; i++) {
for(int j = 1; j < (n - i); j++) {
if(arr[j - 1] > arr[j]) {
temp = arr[j - 1];
arr[j - 1] = arr[j];
arr[j] = temp;
}
}
}
}
}
輸出是:
Enter the file name:/Users/kkumawat/githome/personal/practice/src/main/java/com/kanhaiyakumawat/stackoverflow/myfile.txt
Sorted Array order: [0, 0, 0, 0, 0, 0, 0, 0, 5, 10]
Process finished with exit code 0
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