![]() ![]() Option Explicit Private Sub CommandButton1Click () With ThisWorkbook.Worksheets ('Sheet1'). The example below is using an ActiveX command button in the sheet. It will generate a number between 1 and 10 and use that to select the cell within the range A1:A10. Random Pair Generator is an online tool to generate all possible combinations and random pairs with random or sorted order by input from one or two lists of items. Go search for those solutions and apply it here for the win. You could use RandBetween worksheet function. There have been other discussions on StackOverflow on how to do efficient and uniform permutations of large sets. The later iterations will spend most of its time just scanning the array of bits looking for an unset index value. But it's going to get dog-slow as the bitmask array starts to get filled up. Index = (index + 1) % TOTAL_NUMBER_OF_SETS Pseudo code for a working, yet problematic solution for (x = 0 x < TOTAL_NUMBER_OF_SETS x++) Repeat until all TOTAL_NUMBER_OF_SETS have been printed. Then we keep picking random numbers from the range [0-TOTAL_NUMBER_OF_SETS), checking the bitmask if it's already been used, then call PrintSet with the random number after setting its bitmask position. Uint8_t* bitmask = calloc(TOTAL_NUMBER_OF_SETS/8 + 1) The generator works really well for Facebook, TikTok, Instagram or Twitter contests. returns the Nth value value from the ordered set Pick random winners (and losers) for your contest, competition or giveaway. Then a little modulo arithmetic math to help us map an ID number to it's set of 6-digits: #include Ĭonst uint32_t TOTAL_NUMBER_OF_SETS = 37*36*35*34*33*32 // = 1673844480 To construct the set, we'll need a helper function that will allow us to keep track of which values between 1-37 have already been used during the iteration process of constructing the set. if you can generate a random number between, we can map that to a very specific set of 6 unique integers. And every unique set could potentially be assigned a unique integer id. The total number of possible sets of "6 unique digits in the range of 1-37" can be expressed as: TOTAL_NUMBER_OF_SETS = 37*36*35*34*33*32 = 1673844480ġ673844480 (1.6 billion) fits nicely within a signed 32-bit number. For purposes of demonstrate, we'll understand "select" to mean "print". The OP said he wanted to be able to select all sets in random order until his program has consumed them all. But it doesn't meet a particular requirement set forth by the OP in his question. The lower limit must be less than the upper limit, and negative. The Choice Maker will tell you if you should do it or if you should not do it. If two parameters are specified, they define the upper and lower limit of the random number. This fun tool will make your life with all decision-making so much easier. ![]() Enter all possible choices in our decision maker app, and we will generate a random decision for you. Now the KNUTH shuffle answer posted below is quite elegant. Decision Maker is the online tool you need to quickly make an easy decision within seconds. ![]()
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