Introduction

In order to prevent keyloggers from stealing an user's password, a certain bank account system has implemented the following security measure: only certain digits are prompted to be entered each time.

For example, say your target’s password is 89097, the system may prompt them to enter the 2nd, 4th and 5th digit:

997

Or it might prompt them to enter the 1st, 3rd and 5th digit:

807

All you know is that your target entered the digits in order, but you don't know which position they belong to in the actual password. All you know is there are two 9s, which must come before 7; and that 8 comes before 0, and 0 before 7. Therefore, there are six possible passwords:

80997

89097

89907

98097

98907

99807

The keylogger in your target's computer has been collecting password inputs for months now, so let's hack in!

Challenge

Given a list of three-digit inputs, output all the possible passwords that are valid for all inputs. In order to reduce computational complexity and to keep the amount of possible results low, the password is guaranteed to be numerical and have a fixed size of 5. The digits in every input are in order: if it's 123, the target typed 1 first, then 2, then 3.

Input/Output examples

|----------------------|--------------------------------------------|

|         Input        |                   Output                   |

|----------------------|--------------------------------------------|

| [320, 723, 730]      | [37230, 72320, 73203, 73230]               |

| [374, 842]           | [37842, 38742, 83742]                      |

| [010, 103, 301]      | [30103]                                    |

| [123, 124, 125, 235] | [12345, 12354, 12435]                      |

| [239, 944]           | [23944]                                    |

| [111, 120]           | [11201, 11120, 11210, 12011, 12110, 12101] |

| [456, 789]           | []                                         |

| [756, 586]           | [07586, 17586, 27586, 37586, 47586, 57586, 57856, 58756, 67586, 70586, 71586, 72586, 73586, 74586, 75086, 75186, 75286, 75386, 75486, 75586, 75686, 75786, 75806, 75816, 75826, 75836, 75846, 75856, 75860, 75861, 75862, 75863, 75864, 75865, 75866, 75867, 75868, 75869, 75876, 75886, 75896, 75986, 76586, 77586, 78586, 79586, 87586, 97586] |

| [123]                | [00123, 01023, 01123, 01203, 01213, 01223, 01230, 01231, 01232, 01233, 01234, 01235, 01236, 01237, 01238, 01239, 01243, 01253, 01263, 01273, 01283, 01293, 01323, 01423, 01523, 01623, 01723, 01823, 01923, 02123, 03123, 04123, 05123, 06123, 07123, 08123, 09123, 10023, 10123, 10203, 10213, 10223, 10230, 10231, 10232, 10233, 10234, 10235, 10236, 10237, 10238, 10239, 10243, 10253, 10263, 10273, 10283, 10293, 10323, 10423, 10523, 10623, 10723, 10823, 10923, 11023, 11123, 11203, 11213, 11223, 11230, 11231, 11232, 11233, 11234, 11235, 11236, 11237, 11238, 11239, 11243, 11253, 11263, 11273, 11283, 11293, 11323, 11423, 11523, 11623, 11723, 11823, 11923, 12003, 12013, 12023, 12030, 12031, 12032, 12033, 12034, 12035, 12036, 12037, 12038, 12039, 12043, 12053, 12063, 12073, 12083, 12093, 12103, 12113, 12123, 12130, 12131, 12132, 12133, 12134, 12135, 12136, 12137, 12138, 12139, 12143, 12153, 12163, 12173, 12183, 12193, 12203, 12213, 12223, 12230, 12231, 12232, 12233, 12234, 12235, 12236, 12237, 12238, 12239, 12243, 12253, 12263, 12273, 12283, 12293, 12300, 12301, 12302, 12303, 12304, 12305, 12306, 12307, 12308, 12309, 12310, 12311, 12312, 12313, 12314, 12315, 12316, 12317, 12318, 12319, 12320, 12321, 12322, 12323, 12324, 12325, 12326, 12327, 12328, 12329, 12330, 12331, 12332, 12333, 12334, 12335, 12336, 12337, 12338, 12339, 12340, 12341, 12342, 12343, 12344, 12345, 12346, 12347, 12348, 12349, 12350, 12351, 12352, 12353, 12354, 12355, 12356, 12357, 12358, 12359, 12360, 12361, 12362, 12363, 12364, 12365, 12366, 12367, 12368, 12369, 12370, 12371, 12372, 12373, 12374, 12375, 12376, 12377, 12378, 12379, 12380, 12381, 12382, 12383, 12384, 12385, 12386, 12387, 12388, 12389, 12390, 12391, 12392, 12393, 12394, 12395, 12396, 12397, 12398, 12399, 12403, 12413, 12423, 12430, 12431, 12432, 12433, 12434, 12435, 12436, 12437, 12438, 12439, 12443, 12453, 12463, 12473, 12483, 12493, 12503, 12513, 12523, 12530, 12531, 12532, 12533, 12534, 12535, 12536, 12537, 12538, 12539, 12543, 12553, 12563, 12573, 12583, 12593, 12603, 12613, 12623, 12630, 12631, 12632, 12633, 12634, 12635, 12636, 12637, 12638, 12639, 12643, 12653, 12663, 12673, 12683, 12693, 12703, 12713, 12723, 12730, 12731, 12732, 12733, 12734, 12735, 12736, 12737, 12738, 12739, 12743, 12753, 12763, 12773, 12783, 12793, 12803, 12813, 12823, 12830, 12831, 12832, 12833, 12834, 12835, 12836, 12837, 12838, 12839, 12843, 12853, 12863, 12873, 12883, 12893, 12903, 12913, 12923, 12930, 12931, 12932, 12933, 12934, 12935, 12936, 12937, 12938, 12939, 12943, 12953, 12963, 12973, 12983, 12993, 13023, 13123, 13203, 13213, 13223, 13230, 13231, 13232, 13233, 13234, 13235, 13236, 13237, 13238, 13239, 13243, 13253, 13263, 13273, 13283, 13293, 13323, 13423, 13523, 13623, 13723, 13823, 13923, 14023, 14123, 14203, 14213, 14223, 14230, 14231, 14232, 14233, 14234, 14235, 14236, 14237, 14238, 14239, 14243, 14253, 14263, 14273, 14283, 14293, 14323, 14423, 14523, 14623, 14723, 14823, 14923, 15023, 15123, 15203, 15213, 15223, 15230, 15231, 15232, 15233, 15234, 15235, 15236, 15237, 15238, 15239, 15243, 15253, 15263, 15273, 15283, 15293, 15323, 15423, 15523, 15623, 15723, 15823, 15923, 16023, 16123, 16203, 16213, 16223, 16230, 16231, 16232, 16233, 16234, 16235, 16236, 16237, 16238, 16239, 16243, 16253, 16263, 16273, 16283, 16293, 16323, 16423, 16523, 16623, 16723, 16823, 16923, 17023, 17123, 17203, 17213, 17223, 17230, 17231, 17232, 17233, 17234, 17235, 17236, 17237, 17238, 17239, 17243, 17253, 17263, 17273, 17283, 17293, 17323, 17423, 17523, 17623, 17723, 17823, 17923, 18023, 18123, 18203, 18213, 18223, 18230, 18231, 18232, 18233, 18234, 18235, 18236, 18237, 18238, 18239, 18243, 18253, 18263, 18273, 18283, 18293, 18323, 18423, 18523, 18623, 18723, 18823, 18923, 19023, 19123, 19203, 19213, 19223, 19230, 19231, 19232, 19233, 19234, 19235, 19236, 19237, 19238, 19239, 19243, 19253, 19263, 19273, 19283, 19293, 19323, 19423, 19523, 19623, 19723, 19823, 19923, 20123, 21023, 21123, 21203, 21213, 21223, 21230, 21231, 21232, 21233, 21234, 21235, 21236, 21237, 21238, 21239, 21243, 21253, 21263, 21273, 21283, 21293, 21323, 21423, 21523, 21623, 21723, 21823, 21923, 23123, 24123, 25123, 26123, 27123, 28123, 29123, 30123, 31023, 31123, 31203, 31213, 31223, 31230, 31231, 31232, 31233, 31234, 31235, 31236, 31237, 31238, 31239, 31243, 31253, 31263, 31273, 31283, 31293, 31323, 31423, 31523, 31623, 31723, 31823, 31923, 32123, 33123, 34123, 35123, 36123, 37123, 38123, 39123, 40123, 41023, 41123, 41203, 41213, 41223, 41230, 41231, 41232, 41233, 41234, 41235, 41236, 41237, 41238, 41239, 41243, 41253, 41263, 41273, 41283, 41293, 41323, 41423, 41523, 41623, 41723, 41823, 41923, 42123, 43123, 44123, 45123, 46123, 47123, 48123, 49123, 50123, 51023, 51123, 51203, 51213, 51223, 51230, 51231, 51232, 51233, 51234, 51235, 51236, 51237, 51238, 51239, 51243, 51253, 51263, 51273, 51283, 51293, 51323, 51423, 51523, 51623, 51723, 51823, 51923, 52123, 53123, 54123, 55123, 56123, 57123, 58123, 59123, 60123, 61023, 61123, 61203, 61213, 61223, 61230, 61231, 61232, 61233, 61234, 61235, 61236, 61237, 61238, 61239, 61243, 61253, 61263, 61273, 61283, 61293, 61323, 61423, 61523, 61623, 61723, 61823, 61923, 62123, 63123, 64123, 65123, 66123, 67123, 68123, 69123, 70123, 71023, 71123, 71203, 71213, 71223, 71230, 71231, 71232, 71233, 71234, 71235, 71236, 71237, 71238, 71239, 71243, 71253, 71263, 71273, 71283, 71293, 71323, 71423, 71523, 71623, 71723, 71823, 71923, 72123, 73123, 74123, 75123, 76123, 77123, 78123, 79123, 80123, 81023, 81123, 81203, 81213, 81223, 81230, 81231, 81232, 81233, 81234, 81235, 81236, 81237, 81238, 81239, 81243, 81253, 81263, 81273, 81283, 81293, 81323, 81423, 81523, 81623, 81723, 81823, 81923, 82123, 83123, 84123, 85123, 86123, 87123, 88123, 89123, 90123, 91023, 91123, 91203, 91213, 91223, 91230, 91231, 91232, 91233, 91234, 91235, 91236, 91237, 91238, 91239, 91243, 91253, 91263, 91273, 91283, 91293, 91323, 91423, 91523, 91623, 91723, 91823, 91923, 92123, 93123, 94123, 95123, 96123, 97123, 98123, 99123] |

|----------------------|--------------------------------------------|

Rules

• Input is guaranteed non-empty.


• Leading and trailing zeros matter: 01234 is different than 12340, and 1234 doesn't crack either password. Think of how real passwords work!


• 
  Standard I/O rules apply.


• No standard loopholes.


• This is code-golf, so the shortest answer in bytes wins. Non-codegolfing languages are welcome!

Python 2, 101 bytes

lambda e:['%05d'%i for i in range(10**5)if all(re.search('.*'.join(x),'%05d'%i)for x in e)]

import re

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JavaScript (ES6), 88 bytes

Prints the results with alert().

a=>{for(k=n=1e5;n--;)a.every(x=>(s=([k]+n).slice(-5)).match([...x].join`.*`))&&alert(s)}

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Commented

a => {                    // a[] = input array of 3-character strings

  for(k = n = 1e5; n--;)  // initialize k to 100000; for n = 99999 to 0:

    a.every(x =>          // for each string x = 'XYZ' in a[]:

      ( s =               //   define s as the concatenation of

          ([k] + n)       //   '100000' and n; e.g. '100000' + 1337 -> '1000001337'

          .slice(-5)      //   keep the last 5 digits; e.g. '01337'

      ).match(            //   test whether this string is matching

        [...x].join`.*`   //   the pattern /X.*Y.*Z/

      )                   //

    ) &&                  // end of every(); if all tests were successful:

      alert(s)            //   output s

}                         //

05AB1E, 11 bytes

žh5ãʒæ3ùIåP

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Explanation

žh          # push 0123456789

  5ã        # 5 times cartesian product

    ʒ       # filter, keep only values are true under:

     æ      # powerset of value

      3ù    # keep only elements of length 3

        Iå  # check if each of the input values are in this list

          P # product

Jelly, 11 bytes

9Żṗ5ŒPiⱮẠɗƇ

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