How to Validate a Credit Card Number in Kotlin Luhn Algorithm

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How to Validate a Credit Card Number in Kotlin (Luhn Algorithm) • Greetings, today I shall be showing you how to use the Luhn algorithm to validate a credit card number or debit card, using Kotlin. • The Luhn algorithm is a simple checksum formula used to validate the integrity of identification numbers such as credit card numbers. • The Luhn algorithm works by performing the following steps: • Double every other digit in the number, starting with the second-to-last digit and moving left. • If a doubled number is greater than 9, you mod the number by 10 and add 1 onto the remainder. • We then add up all the digits. • We then mod the total by 10. If the sum is a multiple of 10, we return true as it is a valid credit card, if not then false as the credit card is invalid. • Thanks for watching this Kotlin credit card number validation tutorial. • Numbers to use for testing: https://www.creditcardvalidator.org/g... • Subscribe to keep notified when I upload?: https://tinyurl.com/SubMaxODidily • How to Validate a Credit Card Number in Kotlin (Luhn Algorithm)

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