text: unset the bit at currentIndex
code: noOfWays += waysToKAdjacentSetBits ( n , k , currentIndex + 1 , adjacentSetBits , 0 ) ; NEW_LINE elif ( lastBit != 1 ) : NEW_LINE noOfWays += waysToKAdjacentSetBits ( n , k , currentIndex + 1 , adjacentSetBits , 1 ) ; NEW_LINE noOfWays += waysToKAdjacentSetBits ( n , k , currentIndex + 1 , adjacentSetBits , 0 ) ; NEW_LINE return noOfWays ; NEW_LINE