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  1. Prepare
  2. Algorithms
  3. Bit Manipulation
  4. AND Product
  5. Discussions

AND Product

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204 Discussions

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  • rnolas13
     + 0 comments

    The question is missing edge cases where a=b and a

  • rnolas13
     + 0 comments

    The question is missing edge cases where a=b and a

  • jmcparland
     + 0 comments

    Haskell

    I'm kind of surprised to see implementations that AND over the list in the discussion; a Haskell foldl1 (.&.) [a..b] (basically the same thing) would often timeout.

    module Main where

import Data.Bits (shiftL, shiftR, (.&.))
import Control.Monad (replicateM_)

solve :: [Integer] -> Integer
solve [a, b] = commonPrefix a b
  where
    commonPrefix x y
        | x == y = x
        | otherwise = commonPrefix (x `shiftR` 1) (y `shiftR` 1) `shiftL` 1

main :: IO ()
main = do
    cases <- readLn :: IO Int
    replicateM_ cases $ do
        getLine >>= print . solve . map read . words

  • runeforce1
     + 0 comments

    simplicity at its finest in Go

    func andProduct(a int64, b int64) int64 {
    res := a
    for i := a+1;i <= b;i++ {
        res = res & i
    }
    
    return res
}

  • ishwardharme320
     + 0 comments

    Java

    public static long andProduct(long a, long b) {

  long result=a;
      for(long i=a+1;i<=b;i++){
          result=result & i;
      }
      return result;
}