40 lines
615 B
Crystal
40 lines
615 B
Crystal
#Using bitwise shift
|
|
def isEven_bShift(n)
|
|
n == ((n >> 1) << 1)
|
|
end
|
|
def isOdd_bShift(n)
|
|
n != ((n >> 1) << 1)
|
|
end
|
|
#Using modulo operator
|
|
def isEven_mod(n)
|
|
(n % 2) == 0
|
|
end
|
|
def isOdd_mod(n)
|
|
(n % 2) != 0
|
|
end
|
|
# Using bitwise "and"
|
|
def isEven_bAnd(n)
|
|
(n & 1) == 0
|
|
end
|
|
def isOdd_bAnd(n)
|
|
(n & 1) != 0
|
|
end
|
|
# Using integer predicates
|
|
def isEven_even(n)
|
|
n.even?
|
|
end
|
|
def isOdd_odd(n)
|
|
n.odd?
|
|
end
|
|
|
|
puts isEven_bShift(7)
|
|
puts isOdd_bShift(7)
|
|
|
|
puts isEven_mod(12)
|
|
puts isOdd_mod(12)
|
|
|
|
puts isEven_bAnd(21)
|
|
puts isOdd_bAnd(21)
|
|
|
|
puts isEven_even(32)
|
|
puts isOdd_odd(32)
|