Python-21~25题

---21---

Question：

>A robot moves in a plane starting from the original point (0,0). The robot can move toward UP, DOWN, LEFT and RIGHT with a given steps.

>The numbers after the direction are steps. Please write a program to compute the distance from current position after a sequence of movement and original point. If the distance is a float, then just print the nearest integer.

Example:

>If the following tuples are given as input to the program:

UP 5

DOWN 3

LEFT 3

RIGHT 2

>Then, the output of the program should be: 2

Solution:

解法一：

解法二

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---22---

Question：

>Write a program to compute the frequency of the words from the input. The output should output after sorting the key alphanumerically.

>Suppose the following input is supplied to the program:

New to Python or choosing between Python 2 and Python 3? Read Python 2 or Python 3.

>Then, the output should be:

2:2

3.:1

3?:1

New:1

Python:5

Read:1

and:1

between:1

choosing:1

or:2

to:1

Solution:

解法一

解法二

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---23---

Question：

>Write a method which can calculate square value of number

Solution:

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---24---

Question：

>Python has many built-in functions, and if you do not know how to use it, you can read document online or find some books. But Python has a built-in document function for every built-in functions.

>Please write a program to print some Python built-in functions documents, such as abs(), int(), raw_input()

>And add document for your own function

没理解~~~

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---25---

Question：

>Define a class, which have a class parameter and have a same instance parameter

Solution: