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ICS Assignment 5 Solution

Please note: For some questions, starting codes are available. Please fill in blanks in starting codes. For questions without starting codes, you can write the solutions in any form you like. Since we use an autograder to grade on your code, please strictly name the functions and the submitted files as required by the questions. Moreover, when you submit your answers, you should zip the files, not the whole folder of your answers.

Lastly, the starting codes may contain some tests for you to check if your code is correct.


Exercise 1 - Rectangle (Please complete the rectangle_student.py)

The following code defines a Polygon class, which uses the Point

class defined in point.py.

















































Write a Rectangle class which is a subclass of Polygon. However, the Rectangle is initialized by the left lower corner which is an instance of the
Point class, the width and height , which is different to that of Polygon.



















The __init__() of Rectangle should look like the following:

def __init__(self, width, height, p):

You need to find a way to initialize the methods it inherits from the Polygon

Rectangle properly so that the can work without any modification.



Exercise 2 - Permutations

Write a function called permute(nums) which takes a list of integers and returns all possible permutations. For example, if nums = [1, 2, 3], then, permute(nums) returns:

[[1, 2, 3], [1, 3, 2], [2, 1, 3], [3, 1, 2], [2, 3, 1], [3, 2, 1]]
Hint: You may use recursion to solve this problem.

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