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1. credit card validator in Ruby credit card validator in Ruby

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   cardnumber = 4012888888881881

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   def validlen?(arr)

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     #checks for card length of 13, 15, or 16

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     arr.length == 13  || arr.length == 15 || arr.length == 16

2. credit card validator in c credit card validator in c

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   #include <math.h>

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   #include <stdio.h>

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   int main(void)

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6. frontend-analog frontend-analog Public

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