Question

这是我的代码的第一部分，它创建了一个随机生成的字母数组，其大小由用户指定。我现在需要做的是从用户接收一个字符串，并测试生成的数组中该字符串的相等性。在测试平等方面，我被困住了。任何帮助将不胜感激。

package arraySearcher;
import java.util.Random;
import java.util.Scanner;

public class arrayGenerator {

// method that gets input from user and creates a random array..
public static void createArray() {

    // sets size of array..
    System.out.print("How many columns and rows will you have in your square matrix?");
    Scanner keyboard = new Scanner(System.in);
    int size = keyboard.nextInt();
    char[][] userArray = new char[size][size];

    // fills array with random letters..
    Random randomLetter = new Random();
    char c = (char) (randomLetter.nextInt(26) + 'a');
    for (int row = 0; row < userArray.length; row++)
        for (int column = 0; column < userArray[row].length; column++) {
            userArray[row][column] = (char) (randomLetter.nextInt(26) + 'a');
        }

    System.out.println("Below is your square matrix with randomly generated letters.");

    // prints array..
    for (int i = 0; i < userArray.length; i++) {
        for (int g = 0; g < userArray[i].length; g++) {
            System.out.print(userArray[i][g] + "  ");
        }
        System.out.println();
    }
}

Answer 1

你可以尝试这个

    char[] ch=new char[]{'a','b','c'};

    System.out.println(new String(ch).equals("abc"));

int SIZE = 3;

// row-wise

char[][] rowArray = new char[][] { { 'a', 'b', 'c' }, { 'l', 'm', 'n' }, { 'x', 'y', 'z' } };

System.out.println("check in rows");    
for (int i = 0; i < rowArray.length; i++) {
    System.out.println(new String(rowArray[i]).equals("abc"));
}

// column-wise

char[][] colArray = new char[SIZE][SIZE];
for (int i = 0; i < colArray.length; i++) {
    for (int j = 0; j < rowArray.length; j++) {
        colArray[i][j] = rowArray[j][i];
    }
}

System.out.println("check in columns");
for (int i = 0; i < colArray.length; i++) {
    System.out.println(new String(colArray[i]).equals("bmy"));
}

Answer 2

鉴于userInput是您从用户收到的字符串，并且您已将userArray填充为char的二维数组，您可以检查{是否{ {1}}以这种方式等于其中一行：

userInput

如何使用用户输入字符串检查多维数组是否相等？

2 个答案: