shkesar

<div class="container">
    <div class="row">
        <div class="col-sm-6 col-md-4 col-md-offset-4">
            <h1 class="text-center login-title">Sign in to continue to Bootsnipp</h1>
            <div class="account-wall">
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                    alt="">
                <form class="form-signin">
                <input type="text" class="form-control" placeholder="Email" required autofocus>
                <input type="password" class="form-control" placeholder="Password" required>

shkesar

def nQueens(n: Int) = (0 until n).permutations filter {p => 
  val i = p.zipWithIndex.toSet              // p[i] is the column of the queen on ith row (must be a permutation of 0 until n)
  i.map{case (c, d) => c + d}.size == n &&  // No 2 queens can have same col + diag
  i.map{case (c, d) => c - d}.size == n     // No 2 queens can have same col - diag
}

for {
  (solution, num) <- nQueens(8).zipWithIndex
  _ = println(s"Solution #${num + 1}:")
  col <- solution