// TODO: remove this when you're done with your implementation.
#![allow(unused_variables, dead_code)]

fn transpose(matrix: [[i32; 3]; 3]) -> [[i32; 3]; 3] {
/*
[[matrix[0][0],matrix[1][0],matrix[2][0]],
[matrix[0][1],matrix[1][1],matrix[2][1]],
[matrix[0][2],matrix[1][2],matrix[2][2]]]
*/
  let mut temp: [[i32; 3]; 3] = [0; 3]; 3]
  for row in 0..3 { // has additional bounds checks
// for row in matrix {
//   println :
// }
    for col in 0..3 {
      transposed[col][row] = matrix[row][col];
     }
  }
  transposed
}

fn pretty_print(matrix: &[[i32; 3]; 3]) {
    for x in 0..3 {
      print!("[");
      for y in 0..3 {
		  print!("{} ", &matrix[x][y]);
      }
    print!("]\n");
	}
}

fn main() {
    let matrix = [
        [101, 102, 103], // <-- the comment makes rustfmt add a newline
        [201, 202, 203],
        [301, 302, 303],
    ];

    println!("matrix:");
    pretty_print(&matrix);

    let transposed = transpose(matrix);
    println!("transposed:");
    pretty_print(&transposed);
}