如何将一维数组转换为二维数组？

public class ArrayConversion {
    public static void main(String[] args) {
        int[] oneDimensionalArray = {1, 2, 3, 4, 5, 6};
        int rows = 2; // 二维数组的行数
        int columns = 3; // 二维数组的列数

        int[][] twoDimensionalArray = new int[rows][columns];

        int index = 0;
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                if (index < oneDimensionalArray.length) {
                    twoDimensionalArray[i][j] = oneDimensionalArray[index];
                    index++;
                }
            }
        }

        // 打印二维数组
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                System.out.print(twoDimensionalArray[i][j] + " ");
            }
            System.out.println();
        }
    }
}

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