如何在Java中从一维数组矩阵中删除列？

public class ArrayUtils {
    public static int[][] deleteColumn(int[][] matrix, int columnIndex) {
        int[][] newMatrix = new int[matrix.length][matrix[0].length - 1];
        
        for (int i = 0; i < matrix.length; i++) {
            int destColumn = 0;
            for (int j = 0; j < matrix[0].length; j++) {
                if (j != columnIndex) {
                    newMatrix[i][destColumn] = matrix[i][j];
                    destColumn++;
                }
            }
        }
        
        return newMatrix;
    }
    
    public static void main(String[] args) {
        int[][] matrix = {
            {1, 2, 3},
            {4, 5, 6},
            {7, 8, 9}
        };
        
        int[][] newMatrix = deleteColumn(matrix, 1);
        
        // 输出新的二维数组
        for (int[] row : newMatrix) {
            for (int num : row) {
                System.out.print(num + " ");
            }
            System.out.println();
        }
    }
}