L1-027 rental (Lua)

subject

At one time, the Internet was full of cries for help , How to break this . In fact, this code is very simple ,index Array is arr Index of the array ,index[0]=2 Corresponding arr[2]=1,index[1]=0 Corresponding arr[0]=8,index[2]=3 Corresponding arr[3]=0, And so on …… It's easy to get a phone number 18013820100.

This question asks you to write a program , Generate this code for any phone number —— in fact , Just generate the first two lines , The rest is the same .

Input format ：
Type in a line to give a result of 11 A cell phone number made up of digits .

Output format ：
Generate the first two lines of code for the entered number , among arr The numbers in must be given in descending order .

sample input ：
18013820100

sample output ：
int[] arr = new int[]{8,3,2,1,0};
int[] index = new int[]{3,0,4,3,1,0,2,4,3,4,4};

Code

local arr = {
    }
local s = io.read()
for i = 1, #s do
   idx = tonumber(s:sub(i, i))
   arr[idx] = 1
end

local s1, s2 = "int[] arr = new int[]{", "int[] index = new int[]{"
local map = {
    }
local len = 0
for i = 9, 0, -1 do
   if arr[i] then
       map[i] = len
       len = len + 1
       s1 = s1 .. i .. ","
   end
end
s1 = s1:sub(1, #s1 - 1) .. "};"

for i = 1, #s do
   s2 = s2 .. map[tonumber(s:sub(i, i))] .. ","
end
s2 = s2:sub(1, #s2 - 1) .. "};"

print(s1)
print(s2)