codefights arcade intro task 24
minesweeper https://
minesweeper https://
equalPairOfBits https://
arrayReplace https://
avoidObstacles https://
buildPalindrome https://
centuryFromYear https://
findEmailDomain https://
boxBlur https://
sumUpNumbers https://
add https://
alternatingSums https://
longestDigitsPrefix https://
palindromeRearranging https://