Matrix arrangement issues in php

Question

I would like to know some solutions to such a problem.

It is given a number lets say 16 and you have to arrange a matrix this way

1  2  3  4
12 13 14 5
         


        

Answer 1

in java

   public static void main(final String args[]) {
      int numbercnt = 16;
      int dim = (int) Math.sqrt(numbercnt);
      int[][] numbers = new int[dim][dim];
      ArrayList < Integer > ref = new ArrayList < Integer >();
      for (int i = 0; i < numbercnt; i++) {
         ref.add(i);
      }
      for (int i = 0; i < numbers.length; i++) {
         for (int j = 0; j < numbers[i].length; j++) {
            int pos = (int) (Math.random() * ref.size());
            numbers[j][i] = ref.get(pos);
            ref.remove(pos);
         }
      }
      for (int i = 0; i < numbers.length; i++) {
         for (int j = 0; j < numbers[i].length; j++) {
            System.out.print(numbers[j][i] + " ");
         }
         System.out.println();
      }
   }