subject

You are playing a board game in which you move your pawn along a path of n fields. each field has a number l on it. in each move, if your field carries the number l, then you can choose to take any number of steps between 1 and l. you can only move forward, never back. your goal is to reach the last field in as few moves as possible. below we've written a recursive algorithm to find the optimal strategy for a given board layout. the input to the algorithms is an array board containing the numerical value in each field. the first field of the game corresponds to board [0] and the last to board [n-1]. here we use python or range so range(a, b) consists of integers from a to b-1 inclusively. recursive_moves (array board, int l, int n ): # board has length n and contains only positive integers. if l == n-1: return 0 min_so_far = float('inf') for i in range (l + 1, min(l + board [l] +1, n)): moves = recursive_moves (board, i, n) if (moves + 1 < min_so_far): min_so_far = moves + 1 return min_so_far 1.1. (1 pt.) run recursive moves (board, o, len(board)) with the input array (1,3,6, 3, 2, 3, 9,5). write down a list of all the distinct calls to the function (making sure to note the value of input l) and the return values. it's ok to "memoize" as you go. 1.2. (2 pts) show that the algorithm is correct. it will to formulate a claim of the form: "on input l, the algorithm correctly finds the number of moves needed to get from position x to position y of the board" (for some values of x and y that depend on l). 1.3. (1 pts.) show that the running time of recursive moves (board, 0, len(board)) (as written, with no memoization) on an input array of size n is 12(2"). 1.4. (1 pts) for how many distinct values of the inputs will the algorithm make recursive calls on inputs of size n? 1.5. (3 pts.) write pseudocode (or working code) for a memoized version of the recursive moves procedure that runs in polynomial time. 1.6. (3 pts.) write pseudocode (or working code) for a nonrecursive "bottom-up" version of the recursive moves procedure that runs in polynomial time. note that "bottom-up" here does not necessarily mean in increasing order of l; it means from the simplest subproblems to the most complicated ones. (hint: you might want to program your algorithms yourself to test them. they should be short and esay to code. 1.7. (1 pts.) analyze the asymptotic worst-case running time of your algorithms on input arrays of size n. (the two algorithms will probably be the same).

ansver
Answers: 3

Another question on Computers and Technology

question
Computers and Technology, 22.06.2019 11:40
Design a pos circuit that displays the letters a through j on a seven-segment indicator. the circuit has four inputs w, x, y, and z which represent the last 4 bits of the uppercase ascii code for the letter to be displayed. thus, if wxyz = 0001 then "a" will be displayed. (any answer with 22 or fewer gates and inverters, not counting any for the inputs, is acceptable)
Answers: 2
question
Computers and Technology, 22.06.2019 19:30
Once the data center routes to the destination server that hosts the website, what's the next step in the internet process? user’s browser renders html code from destination server into web page request goes through router/model and isp request routed to nameserver and datacenter
Answers: 2
question
Computers and Technology, 22.06.2019 22:00
During physical science class ben and jerry connected three identical lightbulbs in parallel to a battery where happens when ben removes one of the lightbulbs from it’s socket
Answers: 2
question
Computers and Technology, 23.06.2019 20:50
3.11.3 quiz: comparing and analyzing function typesquestion 4 of 102 pointswhat can you say about the y-values of the two functions f(x) = 3x2-3 andg(x)=2* - 3?
Answers: 2
You know the right answer?
You are playing a board game in which you move your pawn along a path of n fields. each field has a...
Questions