Question

Question 4a (2 points): Finding Edge Cases I This program is a partially correct solution to the winning streak problem from a previous lab. Given a string, list, or tuple as input, find the longest winning streak. This solution contains an error. Find a test case that returns an incorrect value, or raises an error Do not modify or try to correct the code for this question, simply find a problematic input for the function # Modify the value of this variable so that winningstreakBad produces incorrect PROBLEM_INPUT1'' # Do not modify the code below this line def winningStreakBad(s): if type(s) not in (tuple, list, str): return 0 if len(s)0: returne wins 1 maxwins = 1 for i in range(1en(s)): if s[i] s[14]: == wins 1 else: wins 1 if wins maxwins: maxwins wins return maxwins ## This is what the autograder will see winningStreakBad(PROBLEM INPUT1) Question 4b (2 points): Finding Edge Cases ll The code below tries to solve the linear system Find an input (A, B, C, D) that produces incorrect results. For the purposes of this question, False is considered a correst result for non-numeric inputs (strings, lists, etc.) # Modify these values so that solveLinearBad does not produce correct results # Do not modify the code below this line def solvelinearBad(a, b, c, d): for i in [a, b, c, d]: if type(i) not in (int, float): return False x(b d) / (c - a) return x ## This is what the autograder will see : solveLinearBad(A, B, C, D) # Hidden test cell for 4b

Answer 1

(4a)

The below code produces the output 2, whereas the expected output is 1. Hence, when PROBLEM_INPUT is set to the string "W", the code produces incorrect output.

Code Screenshots:

#Modify the value of this variable so that winningStreakBad incorrect output. "у" PROBLEM INPUT1 - #Do not modi fy the code below this line. def winningStreakBad(s) if type(s) not in (tuple, list, str): return 0 if len(s) 0: return e wins 1 = maxwins 1 = for i in range (len(s)): if s[i s[i-1 wins + 1 else: wins 1 if wins maxwins: maxwins wins return maxwins

Sample Output:

>>winningStreakBad (PROBLEM INPUTi) 2

Code To Copy:

#Modify the value of this variable so that winningStreakBad incorrect output.

PROBLEM_INPUT1 = "W"

#Do not modify the code below this line.

def winningStreakBad(s):

    if type(s) not in (tuple, list, str):

        return 0

    if len(s) == 0:

        return 0

    wins = 1

    maxwins = 1

    for i in range(len(s)):

        if s[i] == s[i-1]:

            wins += 1

       

        else:

            wins = 1

        if wins > maxwins:

            maxwins = wins

    return maxwins

(4b)

The below code generates an error as the Division By Zero isn't being handled in the code.

Code Screenshots:

# Modify these values so that solveLinearBad does not produce correct results A = 5 1 B = C = 5 D = 3 #Do not modify the code below this line. def solveLinearBad (a, b, c, d) for i in a, b, c, d]: if type(i) not in (int, float) return False (b - d) / (c - a) X = return x

Sample Output:

>>solveLinearBad (A, B, C, D) Traceback (most recent call last) : File "<pyshell#10>", line 1, in <module> solveLinearBad (A, B, C, D) File "C:\Users\rtyagi\Desktop\abc.py", line 15, in solveLinearBad x (b - d) (c - a) ZeroDivisionError: integer division or modulo by zero

Code To Copy:

# Modify these values so that solveLinearBad does not produce correct results.

A = 5

B = 1

C = 5

D = 3

#Do not modify the code below this line.

def solveLinearBad(a, b, c, d):

    for i in [a, b, c, d]:

        if type(i) not in (int, float):

            return False

   

    x = (b - d) / (c - a)

    return x