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def pi(num) | |
sum = 3 | |
(1..num).each do |n| | |
dn = n*2 | |
puts "(4.0/(#{dn} * #{(dn+1)} * #{(dn+2)}) * (#{(-1)**(n+1)}))" | |
sum += (4.0/(dn * (dn+1) * (dn+2)) * ((-1)**(n+1))) | |
end | |
return sum | |
end | |
def divider(num, divide) | |
if (num != 0) | |
print((num/divide).floor) | |
left = (num%divide) * 10 | |
sleep(1) | |
divider(left, divide) | |
end | |
end | |
def divider_arr(num, divide, arr, time) | |
if (num != 0 && time < 5000) | |
arr << (num/divide).floor | |
left = (num%divide) * 10 | |
time += 1 | |
return divider(left, divide, arr, time) | |
end | |
return arr | |
end | |
def plus_arr(arr1,arr2) | |
bigarr_size = arr1.size() > arr2.size() ? arr1.size() : arr2.size() | |
ans = Array.new(bigarr_size, 0) | |
(0..bigarr_size-1).each do |d| | |
val1 = d >= arr1.size() ? 0 : arr1[d] | |
val2 = d >= arr2.size() ? 0 : arr2[d] | |
if d > 0 | |
if ans[d] + val1 + val2 > 10 | |
ans[d-1] += 1 | |
ans[d] = (ans[d] + val1 + val2)%10 | |
else | |
ans[d] += val1 + val2 | |
end | |
else | |
ans[d] += val1 + val2 | |
end | |
end | |
return ans | |
end |
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