//
// Note: refactoring the multiplication table example
// 1. add initial column and row ???
// 2. extract padSpace() call 
// 3. turn above program into a function that takes a number N, so that you can produce N x N multiplication table
//
function multiplication( N ) {
    for(var a=1; a<=N; a++) {
        var line = "";

        for(var b=1; b<=N; b++) {
            var v = a * b;

            line = line + padSpace(v) + v;
        }
        console.log( line );
    }
}

function padSpace( v ) {
    // add spaces for proper formatting
    var spaces = "";
    if( v < 10 ) {
      spaces = "   ";
    }
    else if( v < 100 ) {
      spaces = "  ";
    }
    else {
      spaces = " "
    }
    return spaces;
}

// invoke it
multiplication( 12 );