Syntax Problems with map() and apply()

[mark4flies]

DrD, in your example of four repeated shuffling, I see index 31 appear thrice:

[[31],[12],[2],[37],[2],[45],[27],[26],[39],[43],[51],[22],[52],[12],[41],[50],[10],[20],[12],[2],[26],[31],[38],[46],[50],[13],[15],[34],[49],[18],[27],[21],[10],[8],[31],[13],[40],[21],[39],[22],[35],[47],[20],[10],[41],[24],[30],[5],[48],[19],[4],[38]],

So it is a case of sampling with replacement using ranm() and not shuffling as with rand().