Question

下面的代码询问您要回答的名称数量，然后告诉您输入您拥有的所有名称。我想要它，以便它将名称打印成两列，以便名称配对在一起。

Scanner scan = new Scanner(System.in);
System.out.println("How many names would you like to enter?");
int n = scan.nextInt(); //Ensures you get an integer
System.out.println("Enter the " + n + " names: ");
int N=n+1;
String[] names = new String[N];

//Store the names in an array
for (int i = 0; i < names.length; i++){
    names[i] = scan.nextLine();
}

//Prints the names in a list
List<String> AllNames;
AllNames = new ArrayList<>(Arrays.asList(names));
Random rand = new Random();
Collections.shuffle(AllNames, rand);
System.out.println(AllNames);  

}}

Answer 1

这样的东西？

String[] names = {"pete", "ryan", "bob", "cynthia", "ulga", "sarah", "madison"};

for(int i = 0; i < names.length; i = i + 2)
{
    System.out.print(names[i]);
    if(i + 1 < names.length)
    {
        System.out.print("\t" + names[i + 1]);
    }
    System.out.println();
}

输出

pete    ryan
bob     cynthia
ulga    sarah
madison

输出2

String[] names = {"pete", "ryan", "bob", "cynthia"};

生成以下内容

pete    ryan
bob     cynthia

Answer 2

@RAZ_Muh_Taz 这就是我到目前为止所做的：

`Scanner scan = new Scanner(System.in);
    System.out.println("How many names would you like to enter?");
    int n= scan.nextInt(); //Ensures you take an integer
    System.out.println("Enter the " + n + " names: ");                                               
    String[] names = new String[n];
//    Store the names in an array
    for (int i = 0; i < names.length; i=i+1){
        names[i] = scan.nextLine();}
        List<String> AllNames;
// Prints the names in a list
        AllNames = new ArrayList<>(Arrays.asList(names));
        for(int i = 0; i < names.length; i = i + 2) {
            System.out.print(names[i]);
            if(i + 1 < names.length)
            {
        System.out.print(" " +"&"+ " " + names[i + 1] );
        }
    System.out.println();
    }
        Random rand = new Random();
        Collections.shuffle(AllNames, rand);
        scan.close();
}}`

我总是得到的输出是：

` & a
b & c`

Java ArrayList分为两列

2 个答案: