'Dojo/Ruby'에 해당되는 글 3건
- 2008/04/27 피보나치
- 2008/04/27 소수구하기 (finding prime numbers)
- 2008/04/07 구구단
yield 활용
def fibonacci(max)
n, m = 1,1
while n<=max
yield n
n, m = m,n+m
end
end
fibonacci(100) { |num| print num, " "}
def fibonacci(max)
n, m = 1,1
while n<=max
yield n
n, m = m,n+m
end
end
fibonacci(100) { |num| print num, " "}
첫 번째 버전
def getPrimeNumbers(maxValue)
primes = Array.new
primes.push(2)
for x in 3..maxValue
isPrime = true
for prime in primes
if Math.sqrt(x) < prime then
next# continue
end
if x % prime == 0 then
isPrime = false
break
end
end
if isPrime then
primes.push(x)
end
end
return primes
end
primes = Array.new
primes.push(2)
for x in 3..maxValue
isPrime = true
for prime in primes
if Math.sqrt(x) < prime then
next# continue
end
if x % prime == 0 then
isPrime = false
break
end
end
if isPrime then
primes.push(x)
end
end
return primes
end
array의 each 메소드 이용
mul = (2...10).to_a
mul.each{|element| puts "2x"+element.to_s+"="+(2*element).to_s }
mul.each{|element| puts "2x"+element.to_s+"="+(2*element).to_s }
array의 each 메소드와 Proc 객체 활용
mul = (2...10).to_a
danproc = Proc.new{|element| mul.each{|m| puts element.to_s+"x"+m.to_s+"="+(element*m).to_s}}
danproc.call(2)
danproc = Proc.new{|element| mul.each{|m| puts element.to_s+"x"+m.to_s+"="+(element*m).to_s}}
danproc.call(2)
X.each do...end 활용
mul = (2...10).to_a
danproc = Proc.new{|element| mul.each{|m| puts element.to_s+"x"+m.to_s+"="+(element*m).to_s}}
(2...10).to_a.each do |danbase|
danproc.call(danbase)
end
danproc = Proc.new{|element| mul.each{|m| puts element.to_s+"x"+m.to_s+"="+(element*m).to_s}}
(2...10).to_a.each do |danbase|
danproc.call(danbase)
end
또 다른 방법이 있으려나..?
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