按浮点值对2D Java数组排序

import java.util.Arrays;

public class ArraySortingExample {
    public static void main(String[] args) {
        double[][] array = {{3.2, 1.5, 2.4}, {2.1, 3.9, 0.5}, {4.7, 2.8, 1.2}};
        
        System.out.println("原始数组：");
        printArray(array);
        
        // 将2D数组转换为一维数组
        double[] flatArray = flattenArray(array);
        
        // 对一维数组进行排序
        Arrays.sort(flatArray);
        
        // 将排序后的一维数组转换回2D数组
        double[][] sortedArray = unflattenArray(flatArray, array.length, array[0].length);
        
        System.out.println("排序后的数组：");
        printArray(sortedArray);
    }
    
    // 打印2D数组
    public static void printArray(double[][] array) {
        for (double[] row : array) {
            for (double element : row) {
                System.out.print(element + " ");
            }
            System.out.println();
        }
        System.out.println();
    }
    
    // 将2D数组转换为一维数组
    public static double[] flattenArray(double[][] array) {
        int rows = array.length;
        int cols = array[0].length;
        double[] flatArray = new double[rows * cols];
        
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                flatArray[i * cols + j] = array[i][j];
            }
        }
        
        return flatArray;
    }
    
    // 将一维数组转换回2D数组
    public static double[][] unflattenArray(double[] flatArray, int rows, int cols) {
        double[][] array = new double[rows][cols];
        
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                array[i][j] = flatArray[i * cols + j];
            }
        }
        
        return array;
    }
}