Question

我的目标是创建一个字母表的二维数组，如下所示：

ABC

BCA

驾驶室

这样每行和每列都有26个字母。我知道我可以用手工丑陋的方式做到这一点，但希望有人知道更有效的方法来填充数组。

谢谢。

Answer 1

你走了。

class Alphabet {
public static void main(String args[]) {

    // Create an array that will hold the grid
    char alphGrid[][] = genArray();

    // Two for loops to print the grid on the screen
    for(int i=0; i<26; i++) {

        for(int j=0; j<26; j++) {
            System.out.print(alphGrid[i][j]);
        }
        System.out.println();
    }

} // end of main

// Create a function to generate the grid
public static char[][] genArray(){
    char[][] arr = new char[26][26];

    // Two for loops to generate the grid
    for(int i = 0; i < 26; i++) {
        for(int j = 0; j < 26; j++) {

            // Creates an int that will later be cast to a char
            int let = i + j;

            // Keeps the int from getting too big
            if(let >= 26)
                let = let - 26;

            // Add 65 to the int so that the char will return letters and not ASCII symbols
            let = let + 65;

            // Cast the int to a char
            char letter = (char)let;

            // Put the char into its respective place in the array
            arr[i][j] = letter;

        }
    }

    // Returns the grid
    return arr;
}
}

输出：

ABCDEFGHIJKLMNOPQRSTUVWXYZ
BCDEFGHIJKLMNOPQRSTUVWXYZA
CDEFGHIJKLMNOPQRSTUVWXYZAB
DEFGHIJKLMNOPQRSTUVWXYZABC
EFGHIJKLMNOPQRSTUVWXYZABCD
FGHIJKLMNOPQRSTUVWXYZABCDE
GHIJKLMNOPQRSTUVWXYZABCDEF
HIJKLMNOPQRSTUVWXYZABCDEFG
IJKLMNOPQRSTUVWXYZABCDEFGH
JKLMNOPQRSTUVWXYZABCDEFGHI
KLMNOPQRSTUVWXYZABCDEFGHIJ
LMNOPQRSTUVWXYZABCDEFGHIJK
MNOPQRSTUVWXYZABCDEFGHIJKL
NOPQRSTUVWXYZABCDEFGHIJKLM
OPQRSTUVWXYZABCDEFGHIJKLMN
PQRSTUVWXYZABCDEFGHIJKLMNO
QRSTUVWXYZABCDEFGHIJKLMNOP
RSTUVWXYZABCDEFGHIJKLMNOPQ
STUVWXYZABCDEFGHIJKLMNOPQR
TUVWXYZABCDEFGHIJKLMNOPQRS
UVWXYZABCDEFGHIJKLMNOPQRST
VWXYZABCDEFGHIJKLMNOPQRSTU
WXYZABCDEFGHIJKLMNOPQRSTUV
XYZABCDEFGHIJKLMNOPQRSTUVW
YZABCDEFGHIJKLMNOPQRSTUVWX
ZABCDEFGHIJKLMNOPQRSTUVWXY

Answer 2

我在这里有所收获！不是最好的，但也许会喜欢它。

import java.util.ArrayList;
import java.util.List;

public class Alphabet{

    public static void main(String[] args){
        char[] c = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
        List<String> s = new ArrayList<>(9);

        for(int i = 0; i < c.length; i+=3){
            try{        
                s.add(""+c[i] + c[i + 1] + c[i + 2]);
            }catch(Exception e){

                try{        
                    s.add(""+c[i] + c[i + 1]);
                }catch(Exception e1){

                    try{        
                        s.add(""+c[i]);
                    }catch(Exception e2){

                    }
                }
            }
        }


        System.out.println(s);

    }

}

输出：[abc，def，ghi，klm，nop，qrs，tuv，wxy，z]

如何使用字母表填充二维char数组

2 个答案: