Last active
February 6, 2017 14:21
-
-
Save railsstudent/0d55eb680bfa6d0ef89526ec54e7c5af to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| add = (a, b) -> | |
| strA = "#{a}" | |
| strB = "#{b}" | |
| lenA = strA.length | |
| lenB = strB.length | |
| # if length is different, prepend the shorter one with 0 | |
| if lenA < lenB | |
| strA = '0' + strA for i in [0...(lenB - lenA)] | |
| else | |
| strB = '0' + strB for i in [0...(lenA - lenB)] | |
| strResult = '' | |
| carryDigit = 0 | |
| for i in [(lenA - 1)..0] by -1 | |
| sumDigit = Number(strA[i]) + Number(strB[i]) + carryDigit | |
| carryDigit = (if sumDigit >= 10 then 1 else 0) | |
| if carryDigit is 1 then sumDigit -= 10 | |
| strResult = "#{sumDigit}" + strResult | |
| if carryDigit isnt 0 then strResult = "#{carryDigit}" + strResult | |
| strResult |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment