[算法](00000) 通用工具类

本文包含后面所有算法中涉及到的工具类

Vocabulary

package krmao.algorithm.common;

public class Vocabulary {
    public static char charAt(int index) {
        return (char) (index + 65);
    }

    public static int indexFrom(char _char) {
        return _char - 65;
    }
}

MatrixUtil

package krmao.algorithm.common;

public class MatrixUtil {
    public static final int INF = -1;//无穷大/不可达

    public static void printMatrix(final int[][] originalMatrix) {
        if (originalMatrix != null) {
            System.out.println("━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            System.out.printf("%3c%3c", ' ', '┃');
            for (int i = 0; i < originalMatrix.length; i++)
                System.out.printf("%6c", Vocabulary.charAt(i));
            System.out.println();
            System.out.println("━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            ;
            for (int i = 0; i < originalMatrix.length; i++) {
                int[] itemMatrix = originalMatrix[i];
                System.out.printf("%3c%3c", Vocabulary.charAt(i), '┃');
                for (int itemValue : itemMatrix)
                    if (itemValue == INF)
                        System.out.printf("%6s", "INF");
                    else
                        System.out.printf("%6d", itemValue);
                System.out.println();
            }
            System.out.println("━━━━━━━━━━━━━━━━━━━━━━━━━━━");
        }
    }
}