I am new to java. Trying to make this into a user input 2D array which is 4*4. But when I try scanner, the row and col always got messed up.
public static void main(String[] args) { String array = "1 2 2 1,1 3 3 1,1 3 3 2,2 2 2 2"; int[][] input = parseInt(array, 4, 4); } And I also want the user input can output as:
1 2 2 1 1 3 3 1 1 3 3 2 2 2 2 2 Appreciate for everybody's help!
Try this one :
public static void main(String args[]) { String array = "1 2 2 1,1 3 3 1,1 3 3 2,2 2 2 2"; int[][] input = new int[4][4];//4*4 String[] inputs = array.split(","); for (int i = 0; i < inputs.length; i++) { String[] cols = inputs[i].split(" "); for (int j = 0; j < cols.length; j++) { input[i][j] = Integer.parseInt(cols[j]); System.out.print(input[i][j]); System.out.print(" ");// for spacing } System.out.println(); } } Output : 
Use following method to convert array String in 2D array.
int[][] parseInt(String array, int row, int col) { int[][] arr = new int[row][col]; String[] rowStr = array.split(","); for (int i = 0; i < rowStr.length; i++) { String[] colStr = rowStr[i].split(" "); for (int j = 0; j < colStr.length; j++) { arr[i][j] = Integer.parseInt(colStr[j]); } } return arr; } 
parseIntcode