Angry_Bird16的博客

一. 初识Python（逛Python主页（https://www.python.org/））    1. 映入眼帘的第一句话便是：          Python is a programming language that lets you work quickly and integrate systems more effectively.        可以看出，Python官网对自己这...

%matplotlib inline import random import numpy as np import scipy as sp import pandas as pd import matplotlib.pyplot as plt import seaborn as sns import statsmodels.api as sm import statsmodels.form...

import numpy as np import scipy.spatial import scipy.optimize import math #ex 10.1 print("#Exercise 10.1: Least squares") A=np.random.normal(size=(3,2)) x=np.random.normal(size=(2,1)) b=np.dot(A,x) p...

import matplotlib.pyplot as plt import numpy as np import scipy.stats #ex 11.1 print("ex 11.1") x=np.linspace(0,2,1000) # y=np.power(np.sin(x-2),2)*np.exp(-np.power(x,2)) y=(np.sin(x-2))**2*np.exp(-(...

import numpy as np import scipy.linalg import matplotlib.pyplot as plt #initialize n, m = 200, 500 A = np.mat(np.random.normal(size = (200, 500))) B = np.mat(scipy.linalg.toeplitz([np.random.normal(...

题目来源：https://leetcode.com/problems/maximum-gap/description/题目：Given an unsorted array, find the maximum difference between the successive elements in its sorted form.Return 0 if the array contains les...

题目来源：https://leetcode.com/problems/search-a-2d-matrix/description/题目：Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:Integers in eac...

题目来源：https://leetcode.com/problems/sort-colors/description/题目：Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colo...

题目来源：https://leetcode.com/problems/maximum-subarray/description/ 题目：Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its ...

第十一章“动手试一试”    11-1 城市和国家：        11-2 人口数量:        a.        b.        c.    11-3 雇员:    

一.教材第七章“动手试一试”    7-1：    7-3:    7-4:    7-8:二.教材第八章“动手试一试”    8-1：     8-2:    8-5:     8-6:

一.第九章“动手试一试”    9-1：       9-2:       9-4：    9-6:二.第十章“动手试一试”    10-1:    10-2:    10-3:    10-4:

一.教程第五章“动手试一试”    5-1：       5-3:       5-7:       5-8：二.教材第六章“动手试一试”    6-1：     6-5:       6-7:       6-9:...

一. 教材第三章练习    3-1：           3-2：        3-3：        3-4:        3-5:        3-6：        3-8:    3-9:二.教材第四章练习    4-2：    4-3:    4-5:    4-8:    4-10:    4-13:...

【题目要求】【代码】from sklearn import datasets from sklearn import cross_validation from sklearn.naive_bayes import GaussianNB from sklearn.svm import SVC from sklearn.ensemble import RandomForestClassifier f...