在Java中，如何交换向量？

2024-05-19 • 问答

import java.util.Scanner;
import java.util.Vector;
import java.util.Collections;

public class Bank implements BubbleSort{
 private Vector<account> accounts;

 public Bank() {
  accounts = new Vector<account>();
 }
 public void makeaccount() {
  Scanner in = new Scanner(System.in);
  int amount;
  while(true) {
   System.out.println("Input");
   amount = in.nextInt();
   if(amount<0)
    break;
   accounts.add(new account(amount));

  }
 }
 public void printaccount() {
  for (int i=0;i<accounts.size();i++) {
   System.out.println(accounts.get(i).get());
  }

 }
 @Override
    public void start() {
        // TODO Auto-generated method stub
        for (int i = 0; i < accounts.size() - 1; i++) {
            for (int j = 0; j < accounts.size() - 1 - i; j++)
                if (isGreater(j,j + 1))
                    swap(j,j + 1);
        }
    }
    @Override
    public void swap(int a,int b) {
        // TODO Auto-generated method stub


        account temp = accounts.get(a);
        accounts.get(a) = accounts.get(b); //error
        accounts.get(b) = temp; //error
    }

    @Override
    public boolean isGreater(int a,int b) {


        // TODO Auto-generated method stub


        return accounts.get(a).get() > accounts.get(b).get();
    }
}

在交换代码中，出现“分配的左侧必须是变量”错误。我该如何修复该代码？在执行任务时，我不能使用收集包。我在Google或stackoverflow中发现了很多代码。 BUt，它们尚未解决。帮助..

// temporarily hold onto the item at index "a" Account temp = accounts.get(a); // put a copy of the "b" item at the "a" location – you will briefly // have the "b" value in two places in your vector accounts.set(a,accounts.get(b)); // set the "b" location to have the temporary item that // you first got from starting "a" location accounts.set(b,temp);

在Java中，如何交换向量？

zuijian168 回答：在Java中，如何交换向量？

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