Lua容器

---

-- Array
print('-----Array-----')
Data = {}
for i=1,5 do
    Data[i]=i*i -- Access by Index
end
table.insert(Data,100) -- Insert a Item
table.remove(Data) -- Remove a Item
for i=1,#Data do -- Get Length
    print(i..' = '..Data[i])
end
 
-- 这里效率明显太低了
-- Queue
print('-----Queue-----')
Data = {}
for i=1,5 do
    table.insert(Data, i) -- Push
end
while #Data > 0 do
    print('Front: '..Data[1]) -- Front
    table.remove(Data, 1) -- Pop
end
 
-- Stack
print('-----Stack-----')
Data = {}
for i=1,5 do
    table.insert(Data, i) -- Push
end
while #Data > 0 do
    print('Top: '..Data[#Data]) -- Top
    table.remove(Data) -- Pop
end
 
-- Set
print('-----Set-----')
Data = {}
Data['Apple'] = true
if Data['Cat'] == nil then
    Data['Cat'] = true -- Insert to Set
end
Data['Apple'] = nil -- Erase from Set
 
-- Map
print('-----Map-----')
Data = {}
Data['Apple'] = 100 -- Add by Key & Value
Data['Banana'] = 200
for key,value in pairs(Data) do
    print('key = '..key..', value = '..value) -- Access All Key & Value
end
print('Apple = '..Data.Apple..' & '..Data['Apple']) -- Access Value by Key
print('Length of Map(or Set) = '..#Data) -- It doesnt work!

输出：
-----Array-----
1 = 1
2 = 4
3 = 9
4 = 16
5 = 25
-----Queue-----
Front: 1
Front: 2
Front: 3
Front: 4
Front: 5
-----Stack-----
Top: 5
Top: 4
Top: 3
Top: 2
Top: 1
-----Set-----
-----Map-----
key = Banana, value = 200
key = Apple, value = 100
Apple = 100 & 100
Length of Map(or Set) = 0