liwj78-CSDN博客

原创 python Datasets 作业

题目描述:代码：from sklearn import cross_validationfrom sklearn import datasets#step1d, t = datasets.make_classification(n_samples=1000, n_features=10, n_informative=2, n_redundant=2, n_repeated=0, n_cla...

2018-06-20 20:59:15 1249

原创 python Anscombe' quartet 作业

描述https://github.com/schmit/cme193-ipython-notebooks-lecture/blob/master/Exercises.ipynb代码：import randomimport numpy as npimport scipy as spimport pandas as pdimport matplotlib.pyplot as pltimpo...

2018-06-10 16:38:18 289

原创 python scipy作业

代码：from scipy.optimize import leastsqfrom scipy.optimize import fsolvefrom scipy.optimize import minimize_scalarfrom scipy.spatial import distanceimport scipy.optimize as optimport numpy as np#...

2018-06-02 16:34:14 413

原创 python matplotlib作业

代码：import matplotlib as mptimport pylabimport mathimport numpy as npfrom scipy.optimize import leastsqfrom scipy import stats#11.1 Plotting a functionx = np.linspace(0, 2, 1000)y = np.sin((x-...

2018-05-27 22:38:25 215

原创 python numpy作业

代码：import numpyimport timefrom scipy import linalgn = 200m = 500A = numpy.random.normal(size = (n, m))f = numpy.random.randint(1, 1000, size = m)B = linalg.toeplitz(f)#9.1#A+AA_A = A + A'...

2018-05-19 23:41:54 266

题目：Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once.Find all the elements that appear twice in this array.Could you do it without extra s...

2018-05-09 15:50:52 113

原创 python leetcode编程作业3

题目：Swap Nodes in PairsGiven a linked list, swap every two adjacent nodes and return its head.Example:Given 1->2->3->4, you should return the list as 2->1->4->3.Note:Your algorithm sh...

2018-05-01 02:33:39 94

原创 python leetcode编程作业2

题目：3SumGiven an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.Note:The solution set must not c...

2018-05-01 02:02:29 108

原创 python leetcode编程作业1

题目：TriangleGiven a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For example, given the following triangle[ [2], [3,4], ...

2018-04-30 19:54:58 139

原创高级编程技术课后作业第十一章练习

11-1 城市和国家代码：import unittestdef get_city_country(city, country): return city + ", " + countryclass place(unittest.TestCase): def test_get_city_country(self): str = get_city_country(...

2018-04-14 10:45:38 219

原创高级编程技术课后作业第十章练习

10-1 python学习笔记代码：with open('input.txt') as input: print(input.read())with open('input.txt') as input: file_in = input print(file_in.read())list = []with open('input.txt') as input:...

2018-04-06 17:26:02 153

原创高级编程技术课后作业第九章练习

9-1 餐馆代码：class Restaurant(): def __init__(self, name, type): self.restaurant_name = name self.cuisine_type = type def describe_restaurant(self): print("name:" + self.r...

2018-04-06 16:06:21 130

原创高级编程技术课后作业第八章练习

8-2 喜欢的图书代码：def favorite_book(book): print("One of my favorite books is " + book)favorite_book("《灿烂千阳》")结果：One of my favorite books is 《灿烂千阳》8-4 大号t恤代码：def make_shirt(message="I love python", s...

2018-04-01 20:38:48 110

原创高级编程技术课后作业第七章练习

7-3 10的整数倍代码：num = int(input("请输入一个数字:"))if num % 10 == 0: print("这个数字是10的整数倍")else: print("这个数字不是10的整数倍")结果：请输入一个数字:100这个数字是10的整数倍请输入一个数字:99这个数字不是10的整数倍7-5 电影票代码：message = ""while True: ...

2018-04-01 19:36:39 135

原创高级编程技术课后作业第六章练习

6-2 喜欢的数字代码：favorite_num = {"Amy": 1, "John": 2, "Lily": 2, "Mike": 5, "Tom": 3}for name, num in favorite_num.items(): print(name + " is fond of " + str(num))结果：Amy is fond of 1John is fond

2018-03-25 14:41:56 127

原创高级编程技术课后作业第五章练习

5-2 更多的条件测试代码：print("abc" == "abc")print("aaa" == "bbb")print("ABC"=="abc")print("ABC".lower()=="abc")print(1 > 2 and 2 > 1)print(1 >2 or 2 > 1

2018-03-25 14:23:45 188

原创高级编程技术课后作业第四章练习

4-2 动物代码：animals = ['dog', 'cat', 'squirrel']for animal in animals: print("A " + animal + " would make a great pet.")print("Any of these animals would make a great pet!")结果：A dog would make a gr...

2018-03-18 09:53:46 274

原创高级编程技术课后作业第三章练习

3-2 问候语代码：names = ["Amy", "John", "Mike"]for name in names: print("Hi, " + name + "!")结果：Hi, Amy!Hi, John!Hi, Mike!3-6 添加嘉宾代码：names = ["Amy", "John", "Mike"]names.insert(0,

2018-03-18 09:24:29 207

原创高级编程技术课后作业第二章练习

第二章练习2-2 多条简单消息>>> str = "Hello">>> print(str)Hello>>> str = "Hi">>> print(str)Hi2-4调整名字大小写>>> name = "MiKe">&

2018-03-11 16:09:17 140

原创高级编程技术课后作业0

1.浏览python主页，在博客上写下你有哪些发现和收获我在浏览python主页后，看出python主页除了提供python各个版本的下载以外，主要是在宣传python编程语言的各个优点，还分享了许多人使用python而成功的故事。可见，python这门语言的成功除了本身的优点以外，离不开人们的大力宣传。2.假如你已经成为了一位python编程高手，你打算实现怎样的程序？在博客上写下你的目...

2018-03-11 10:25:32 139

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