From f4c91ff36cb7fdc34abed391a1ce6dfb0103c182 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=A1=82=E5=8D=A0=E5=85=88?= <1969479820@qq.com> Date: Tue, 8 Dec 2020 15:04:43 +0800 Subject: [PATCH] update homework_01_python/README.md. --- homework_01_python/README.md | 63 ++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/homework_01_python/README.md b/homework_01_python/README.md index ff6e0f1..aa5cff1 100644 --- a/homework_01_python/README.md +++ b/homework_01_python/README.md @@ -9,6 +9,20 @@ ``` One is always on a strange road, watching strange scenery and listening to strange music. Then one day, you will find that the things you try hard to forget are already gone. ``` +程序如下: +import string + +path = r'C:\Users\桂尔哈提\PycharmProjects\pythonProject1\en.txt' +with open(path, 'r') as text: + words = [raw_word.strip(string.punctuation).lower() for raw_word in text.read().split()] # 把所有的文字分割,忽略大小写,忽略前后的标点符号 + words_index = set(words) + counts_dict = {index: words.count(index) for index in words_index} # 通过index写入字典 + + for word in sorted(counts_dict, key=lambda x: counts_dict[x], reverse=True): # 通过字典进行字数统计 + print('{}-{} times'.format(word, counts_dict[word])) + + + **深入思考:** * 写完程序之后反思一下,如果单词之间是两个空格,或者是`\t`的情况下程序会不会有问题? @@ -17,6 +31,13 @@ One is always on a strange road, watching strange scenery and listening to stran ### (2)组合 有 1、2、3、4 个数字,能组成多少个互不相同且无重复数字的三位数?都是多少? +程序如下: +for i in range(1,5): + for j in range(1,5): + for k in range(1,5): + if( i != k ) and (i != j) and (j != k): + print(i,j,k) + **深入思考:** * 算法复杂度是? @@ -30,6 +51,30 @@ One is always on a strange road, watching strange scenery and listening to stran * 高于 100 万元时, 超过 100 万元的部分按 1%提成, 从键盘输入当月利润 I,求应发放奖金总数? +程序如下: +profit = float(input("请输入当月利润,单位为元:")) +bonus = 0 # 奖金 +if profit <= 100000: + bonus = 10 * 0.1 +elif 100000 < profit <= 200000: + bonus = 100000 * 0.1 + (profit - 100000) * 0.075 +elif 200000 < profit <= 400000: + bonus = round(100000 * 0.1 + 100000 * 0.075 + + (profit - 200000) * 0.05) +elif 400000 < profit <= 600000: + bonus = 100000 * 0.1 + 100000 * 0.075 + 200000 * 0.05 + \ + (profit - 400000) * 0.03 +elif 600000 < profit <= 1000000: + bonus = 100000 * 0.1 + 100000 * 0.075 + 200000 * 0.05 + \ + 200000 * 0.03 + (profit - 600000) * 0.015 +elif profit > 1000000: + bonus = 100000 * 0.1 + 100000 * 0.075 + \ + 200000 * 0.05 + 200000 * 0.03 + \ + 400000 * 0.015 + (profit - 1000000) * 0.015 +else: + pass +print('当月应发放奖金总数为%s元' % bonus) + **深入思考:** * 除了用`if`手写,能否用其他方式(例如用list,然后自动实现所有的判断)来实现? @@ -37,11 +82,29 @@ One is always on a strange road, watching strange scenery and listening to stran ### (4)循环 输出9x9的乘法口诀表 +程序如下: + +a=[1,2,3,4,5,6,7,8,9] +for i in range(len(a)):#控制行数 + for j in range(i+1):#因为i是从0开始的,所以需要加一 + print("%d*%d="%(a[j],a[i]),a[j]*a[i],end="| ") + print(" ")#换行 + **深入思考:** * 如何对齐,看着更清楚? ### (5)使用while循环实现输出2-3+4-5+6.....+100的和 +程序如下: +i,su = 2,0 +while i <= 100: + if i % 2 == 0: + su = su + i + else: + su = su - i + i += 1 +print(su) + **深入思考:** * 除了直接的方法,能否用一句话写完? -- Gitee