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POjava recursion on array
 

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    <p>I have to create a program that finds all the possible ways of filling a square of size x by y. You place a block which takes up 2 spaces to completely fill. </p> <p>The problem is I don't know how to code it to the point where you can remember the placements of each square. I can get it to where it fills the board completely once and maybe twice, but nothing past that. I also know that I'm supposed to use recursion to figure this out . Here is the code I started on so far. There is also a main method and I have the initial even/odd check working fine. This is the part I have no idea on.</p> <pre><code> public void recurDomino(int row, int column) { if (Board[2][x - 1] != false) { } else if(Board[1][x-1]!=false) { } else { for (int n=0; n &lt; x - 1; n++) { Board[row][column] = true; Board[row][column+1] = true; column++; counter++; } recurDomino(1, 0); recurDomino(2, 0); } } Thank you for any help you guys can give me. ******************* EDIT **************************************** </code></pre> <p>I am a little confused still. I came up with this algorithm but I always get 2 for any value greater or equal to 2.</p> <pre><code>public boolean tryHorizontal(int row , int col){ if( row &lt; 0 || row &gt;= array[0].length-1) return false; else return true; } public boolean tryVertical(int row, int col){ if( col &lt; 0 || col &gt;= 2 ) return false; else return true; } public boolean tryRowCol(int row, int col){ if(this.tryHorizontal(row, col) &amp;&amp; this.tryVertical(row, col)){ return true; } else return false; } public int findWays(int row, int col){ int n = 0; if( !this.tryRowCol(row, col)) return 0; else n =+ 1 + this.findWays(row+1, col+1); return n; } </code></pre>
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