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Update luhnCheck.md

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Rohit Tanwar
2018-01-03 17:56:42 +05:30
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parent b41c1a6718
commit 33c48fae26
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snippets/luhnCheck.md
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@ -6,7 +6,7 @@ Works with numbers and strings alike
const luhnCheck = num => { const luhnCheck = num => {
let arr = (num+'').split('').reverse() let arr = (num+'').split('').reverse()
let lastDigit = arr.splice(0,1) let lastDigit = arr.splice(0,1)
let sum = arr.reduce((acc,val,i) => (acc,val,i) => i%2!==0 ? acc + parseInt(val) : acc + (parseInt(val) * 2)%9 || 9,0) let sum = arr.reduce((acc,val,i) => i%2!==0 ? acc + parseInt(val) : acc + (parseInt(val) * 2)%9 || 9,0)
sum += parseInt(lastDigit) sum += parseInt(lastDigit)
return sum%10 === 0 return sum%10 === 0
} }