[英]How to properly use tab spaces in Java for a 5x5 2D array?
我希望我的二維數組實際輸出為普通的 5x5 網格,而不是水平線或垂直線,這是我目前的代碼。 (我使用 String 作為數字,因為我稍后需要用“XX”替換它們)
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class assignMain {
// Global declarations.
public static Scanner choice = new Scanner(System.in);
public static String player1 = "Player 1's card:";
public static String player2 = "Player 2's card:";
public static int i;
public static int j;
public static void main (String[] args) {
// Declare list to contain used numbers.
List<Scanner> usedNums = new ArrayList<>();
usedNums.add(choice);
// Declare card 1 numbers
String[][] card1 = { {"24", "2", "8", "1", "25"},
{"12", "16", "7", "17", "15"},
{"5", "6", "20", "19", "13" },
{"14", "23", "22", "4", "3" },
{"10", "18", "11", "21", "9"} };
// Declare card 2 numbers
String[][] card2 = { {"24", "21", "17", "15", "6"},
{"10", "3", "8", "18", "20" },
{"14", "7", "16", "12", "5" },
{"25", "23", "13", "19", "11"},
{"22", "4", "9", "1", "2" } };
printCard(card1, card2);
}
public static void printCard(String[][] card1, String[][] card2) {
System.out.println(player1);
for(i = 0; i < card1.length; i++) {
for(j = 0; j < card1.length; j++) {
System.out.println(card1[i][j]);
System.out.println();
}
}
}
}
當前輸出為:
Player 1's card:
24
2
8
1
25
12
16
7
17
15
5
6
20
19
13
14
23
22
4
3
10
18
11
21
9
我希望輸出是什么:
Player 1's card:
24 2 8 1 25
12 16 7 17 15
5 6 20 19 13
14 23 22 4 3
10 18 11 21 9
基本上希望網格是對稱的而不是全部隨機的,如果可能的話,我打算使用 \\t ,如果不是,那么我會接受其他不太復雜的解決方案。 謝謝,麻煩您了。
嘗試這個
String[][] card1 = { {"24", "2", "8", "1", "25"},
{"12", "16", "7", "17", "15"},
{"5", "6", "20", "19", "13" },
{"14", "23", "22", "4", "3" },
{"10", "18", "11", "21", "9"} };
for (int i = 0; i < card1.length; i++) {
for (int j = 0; j < card1.length; j++) {
System.out.print(card1[i][j]);
System.out.print(" "); // you can replace this with "\t"
}
System.out.print("\n");
}
嘗試這個。
String[][] card1 = {
{"24", "2", "8", "1", "25"},
{"12", "16", "7", "17", "15"},
{"5", "6", "20", "19", "13"},
{"14", "23", "22", "4", "3"},
{"10", "18", "11", "21", "9"}};
for (String[] row : card1) {
for (String e : row)
System.out.printf("%2s ", e);
System.out.println();
}
輸出:
24 2 8 1 25
12 16 7 17 15
5 6 20 19 13
14 23 22 4 3
10 18 11 21 9
代替
System.out.println(card1[i][j])
和
System.out.print(card1[i][j])
和
將此行向下移動一步(在 j 循環完成后)
System.out.println()
對於空間使用 01 而不是 1 或手動條件檢查值小於 10 然后相應地修改它
看起來您只需要學習使用System.out.print
代替System.out.println
。 這樣做將不使用換行符。 您可能還希望使用System.out.printf
將每個字符串打印為兩個字符。
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