Sam Media Hacker Test

link for test question:

https://gist.github.com/homam/25dc665325a12aeb06aeed9dc66ada91

Solution:

Steps:

-- step 1

Initialize the game for set operators (+ , - , *), range the numbers and set level

-- step 2

generate random postfix 

-- step3

convert postfix to infix with add necessary parentheses

-- step4

evaluate postfix expression to check with player input
note: you can make evaluate in the same method generate random postfix (just you need small editing)

-- step5

Check answer the play if correct or wrong

note:

-question and bouns1 solve together in same code.

-bouns2:

level 1: o(n) ---> 100
level 2: o * n*(n+1) / 2 
         note: o = o (if operand '+' or '*'), o = 2 * o (if operand '-' or '/')
level 3: I guess more than 2^o * n(n+1)(2n + 1) / 6
level 4: I guess more than 2^o * O(n^4)