I'm trying to figure out how to read in a multidimensional array from standard input given the user provides the row and col size followed by integers of the array

e.g. Input:

        2 3      <= row, col of array
        8 3 10   < array integers
        7 9 6

My code is currently:

    int colA = scan.nextInt();
    int rowA = scan.nextInt();        

    int[][] array = new int[rowA][colA];

    for (int i = 0; i <rowA;i  ){
        for (int j=0; j<colA;j  ){
            array1[i][j]  = scan.nextInt();
        } 
    }

And the output of my array is: [[8,3,10,7,9,6]] but what I'd like to do is output [[8,3,10],[7,9,6]]

CodePudding user response：

Here first the row and col value got from users is reversed that is the only mistake i could see import java.util.Arrays; import java.util.Scanner;

public class TwoDimensionalArray {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int rowA = scan.nextInt();
    int colA = scan.nextInt();

    int[][] array = new int[rowA][colA];

    for (int i = 0; i < rowA; i  ) {
        for (int j = 0; j < colA; j  ) {
            array[i][j]  = scan.nextInt();
        }
    }
    for (int[] innerArray : array) {
        System.out.println(Arrays.toString(innerArray));
    }
}

} This is a working one

CodePudding user response：

There are some errors in your code.

1. You inverted the order of the dimensions asked to the users.

   Use this:

   int rowA = scan.nextInt();
   int colA = scan.nextInt();
   

   Instead of this:

   int colA = scan.nextInt();        
   int rowA = scan.nextInt();
   

2. You wrote array1 instead of array in array1[i][j] = scan.nextInt();

Note that you can use array[i][j] = scan.nextInt(); instead of array[i][j] = scan.nextInt()