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Asked: 2026-06-02T11:58:03+00:00

i am developing a mine sweeper game in c# of dimension (8 x 8).The

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i am developing a mine sweeper game in c# of dimension (8 x 8).The difficulty levels increase/decrease the number of mines on the grid.

I use a random class (with min,max set;) to generate a random cell number.The problem i am facing is ,the random object keeps repeating the same number.I tried to resolve this issue by maintaining a local list where i store the generated unique random numbers.The next time i call Next(), i would check it against the local list ,to see if its already present.If the number is already present i would keep calling Next() until i get a new number which is unique and not present in the list.But this doesnt look in itself a good solution as sometimes it takes painful amount of time to generate a new list.

Any suggestions on this please

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1 Answer

  1. Editorial Team

    It looks like you want a shuffle based on a fixed number of cells (8,8), e.g. a Fisher-Yates shuffle. This would guarantee that any coordinate only appears exactly once (as opposed to repeatedly using Random.Next() where you can draw the same number many times), and the order of appearance of coordinates is randomized.

    Initialize an array that contains all the coordinates of your cells, shuffle the array and maintain an index of the next “random” cell, return the cell at the offset of the index and increase the index.

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