如何在Java中按字母顺序排序列表？

Question

import java.util.Scanner;

public class SortBuffer {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        System.out.println("Text Sorting Program: (ECSE 202 - Assignment 2)");
        System.out.println("Enter text to be sorted, line by line. A blank line terminates");
        System.out.println("You can cut and paste into this window");

        scan.nextLine();
        while (!scan.nextLine().isEmpty()) {
            scan.nextLine();
        }
        if (scan.nextLine().isEmpty()) {
            System.out.println("Text in sort order:");
        }
    }
}

    Scanner scan = new Scanner(System.in);
    boolean moreLines = [];

    System.out.println("Text Sorting Program: (ECSE 202 - Assignment 2)");
    System.out.println("Enter text to be sorted, line by line. A blank line terminates");
    System.out.println("You can cut and paste into this window");


    List<String> scannedLines = new ArrayList<>();
    do{
        String scannedLine = scan.nextLine();
        boolean moreLines = !scannedLine.isEmpty();
        if (moreLines){
            scannedLines.add(scannedLine);
        }
        while (moreLines)

            java.util.Collections.sort(scannedLines);
    }




}}

Answer 1

首先，您需要将所有读取行放入一个列表中。

例如。

List<String> scannedLines = new ArrayList<>();
boolean moreLines = false
do{
 String scannedLine = scan.nextLine();
 moreLines = !scannedLine.isEmpty();
 if (moreLines){
   scannedLines.add(scannedLine);
 }
} while (moreLines)

然后像下面这样进行：我如何按字母顺序对列表进行排序？