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a={}
for i=1,10 do
a[i]={}
for j=0,10 do
if(i%2==0) then
a[i][j]=0
end
end
end
print(a[9][10])
print(a[10][10])
print()
--双端队列
list={}
function list.new()
return {first = 0,last = -1}
end
function list.pushleft(list,value)
local first= list.first-1
list[first] = value
list.first= first
end
function list.pushright(list,value)
local last = list.last+1
list[last]= value
list.last=last
end
function list.popleft(list)
local first=list.first
if(first>list.last) then
error("list is empty")
end
local res= list[first]
list[first]=nil
list.first=list.first+1
return res
end
function list.popright(list)
local last = list.last
if last<first then
error("the list is empty")
end
local res = list[last]
list[last]= nil
list.last= list.last-1
return res
end
function list.display(list)
if(list.first>list.last) then
error("the list is empty",2)
end
for i=list.first ,list.last do
print(list[i])
end
end
mylist=list.new()
list.pushleft(mylist,12)
list.pushleft(mylist,"00")
list.pushright(mylist,34)
list.pushright(mylist,56)
list.display(mylist)
print()
function newstack ()
return {""}
end
function serialize(o)
if type(o) == "number" then
io.write(o)
elseif type(o) == "string" then
--不要手动加入引号，否则会有边际效应
io.write(string.format("%q",o))
elseif type(o) == "table" then
io.write("{\n")
for i,v in pairs(o) do
io.write(" "..i.." = ")
serialize(v)
io.write(",\n")
end
io.write("}\n")
end
end
serialize(123)
print()
serialize("112233")
print()
tab = { a=11,haha="www" ,c=333}
serialize(tab)
function basicserialize (o)
if type(o) == "number" then
return tostring(o)
else
return string.format("%q", o)
end
end
function save (name, value, saved)
saved = saved or {} -- 参数未传入的初始化
io.write(name, " = ")
if type(value) == "number" or type(value) == "string" then
io.write(basicserialize(value), "\n")
elseif type(value) == "table" then
if saved[value] then
io.write(saved[value], "\tcircle\n")
else
saved[value] = name
io.write("{}\n")
for k,v in pairs(value) do
local fieldname = string.format("%s[%s]", name,
basicserialize(k))
save(fieldname, v, saved)
end
end
else
error("cannot save a " .. type(value))
end
end
a = {x=1, y=2; {3,4,5}}
a[2] = a -- 循环表
a.z = a[1] -- 共享子表
save('a',a)
运行结果：
nil
0
00
12
34
56
123
"112233"
{
a = 11,
c = 333,
haha = "www",
}
a = {}
a[1] = {}
a[1][1] = 3
a[1][2] = 4
a[1][3] = 5
a[2] = a circle
a["y"] = 2
a["x"] = 1
a["z"] = a[1] circle
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