strobogrammatic number is a number that looksthe same when rotated 180 degrees (looked at upside down).Find all strobogrammatic numbers that are of length = n.For example,Given n = 2, return ["11","69","88","96"].def gen_strobogrammatic(n):Given n, generate all strobogrammatic numbers of length n.:type n: int:rtype: List[str]return helper(n, n)def helper(n, length):if n == 0:return [™"]if n == 1:return ["1", "0", "8"]middles = helper(n-2, length)result = []for middle in middles:if n != length:result.append("0" + middle + "0")result.append("8" + middle + "8")result.append("1" + middle + "1")result.append("9" + middle + "6")result.append("6" + middle + "9")return resultdef strobogrammatic_in_range(low, high)::type low: str:type high: str:rtype: intres =count = 0low_len = len(low)high_len = len(high)for i in range(low_len, high_len + 1):res.extend(helper2(i, i))for perm in res:if len(perm) == low_len and int(perm) < int(low):continueif len(perm) == high_len and int(perm) > int(high):continuecount += 1return countdef helper2(n, length):if n == 0:return ["]if n == 1:return ["0", "8", "1"]mids = helper(n-2, length)res = []for mid in mids:if n != length:res.append("0"+mid+"0")res.append("1"+mid+"1")res.append("6"+mid+"9")res.append("9"+mid+"6")res.append("8"+mid+"8")

The gen_strobogrammatic function takes an integer n as input and generates all strobogrammatic…

strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down). Find all strobogrammatic numbers that are of length = n. For example, Given n = 2, return ["11","69","88","96"]. def gen strobogrammatic(n): Given n, generate all strobogrammatic numbers of length n. type n: int rtype: List[str] return helper(n, n) def helper(n, length): if n == 0: return [™] if n == 1:

strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down). Find all strobogrammatic numbers that are of length = n. For example, Given n = 2, return ["11","69","88","96"]. def gen strobogrammatic(n): Given n, generate all strobogrammatic numbers of length n. type n: int rtype: List[str] return helper(n, n) def helper(n, length): if n == 0: return [™] if n == 1:

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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