計算機二級python指導用書程式設計題答案

諾坎普奇蹟發表於2018-11-10
計算機Python程式設計

個人手寫，歡迎指正

更新中。。。

#！／user/bin/env python
#-*- coding:utf-8 -*-
#author：M10
import random
#3-1輸入整數，輸出百分位及以上的數字
'''
s = input("輸入整數哦")
print(s[:-2])
'''
#3-2獲取輸入字串，按照空格分割，按行列印
'''
i = input("輸入字串")
s = i.split()
for j in s:
    print(j)
'''
#3-3輸入數字1-7，輸出星期幾
"""
i = int(input('input a number between 1-7:'))
if i == 1:
    print('monday')
elif i == 2:
    print('tuesday')
elif i == 3:
    print('wednesday')
elif i == 4:
    print('thursday')#後續省略
else:
    print('sunday')
    
"""
#3-4迴文數，正反排列相同的數
"""
s = input("input a 5-num")
if s[0]==s[-1] and s[1]==s[-2]:
    print('迴文')
else:
    print('不是迴文')
"""
#3-5輸入十進位制整數，分別輸出二進位制、八進位制、十六進位制字串
"""
s = int(input('a number:'))
print('二進位制:{:b}'.format(s))
print('八進位制:{:o}'.format(s))
print('十六進位制:{:x}'.format(s))
"""
#4-1輸入一個年份，判斷是否是閏年
"""
i = int(input('input a year:'))
if (i%4==0 and i%100 != 0) or i%400==0 :
    print(i,'閏年')
else:
    print('不是閏年')
"""
#4-2最大公約數與最小公倍數
"""
a,b = map(int,input('輸入兩個數，逗號分割:').split(','))
x = a*b
if a>b:
    while True:
        s = a%b
        if s ==0:
            print('最大公約數:',b)
            print('最小公倍數:',int(x/b))
            break
        b,a = s,b
elif a<b:
    while True:
        s = b%a
        if s ==0:
            print('最大公約數:',a)
            print('最小公倍數',int(x/a))
            break
        a,b = s,a
else:
    print('最大公約數:',a)#兩數相等
    print('最小公倍數',int(x/a))
"""
#4-3統計不同字元個數
"""
z,s,k,q = 0,0,0,0
str = input('輸入字元：')
l = len(str)
for i in range(l):
    if '0' <= str[i] <='9':
        z += 1
    elif 'A'<=str[i]<='z':
        s += 1
    elif str[i] == ' ':
        k +=1
    else:q+=1
print('整數',z)
print('英文字元',s)
print('空格',k)
print('其他',q)
"""
#4-4猜數有戲續
"""
ran = random.randint(1,1000)
count=0
while True:

    try:
        i = eval(input('pls input a num:'))
    except:
        print('型別錯誤，重新輸入')
        continue
    if type(i) != type(1):
        print('型別錯誤，重新')
        continue
    else:
        count += 1
        if i >ran:
            print("it's bigger,{}次".format(count))
        elif i<ran:
            print("it's smaller,{}次".format(count))
        else:
            print("Right,{}次".format(count))
            break
"""
#4-5羊車門問題
#十萬次隨機實驗，不換猜到車的次數為count_n,交換猜到車次數為count
"""
j=1
count_n = 0
count = 0
while j<=100000:
    j +=1
    i= random.randint(0,2)#隨機猜一個數字，0車，12羊
    #若猜對車則不換+1，若猜對羊則換+1
    if i == 0:
        count_n +=1
    else:
        count +=1
print("don't change",count_n/100000)
print("change",count/100000)
"""


#5-1實現isNum函式
"""
def isNum(s):
    if type(s)==type(1+1j) or type(s)==type(1) or type(s)==type(1.1):
        return 1
    else:
        return 0
"""
#5-2實現isPrime函式
"""
def isPrime(a):
    try:
        if a%1 == 0 and a%2!=0 and a%3 !=0 and a%5 !=0 and a%7!=0:
            return True
        else:
            return False
    except:
        print('pls input a intger')
print(isPrime(123))
"""
#5-3記數函式
"""
def count(s):
    l = len(s)
    count_int,count_str,count_sp,count_or = 0,0,0,0
    for i in range(l):
        if '0'<=s[i]<='9':
            count_int +=1
        elif 'A'<=s[i]<='z':
            count_str +=1
        elif s[i]==' ':
            count_sp +=1
        else:
            count_or +=1
    print('數字、字母、空格、其他分別為：',count_int,count_str,count_sp,count_or)

count('1232h1 2huuusnu2 u1ue2ue #$ ')
"""
#5-4列印200以內所有素數，空格分開
"""
#b記錄整除次數，只能被1和自身整除的是質數
def print_prime():
    for j in range(1,201):
        b = 0
        if j == 1 :
            print(1,end=' ')
        else:
            for i in range(2,j+1):
                if j%i ==0:
                    b += 1
            if b<=1:
                print(j,end=' ')
print_prime()
"""
#5-5引數為n，獲取斐波那契數列第n個數並返回
"""
def Fibonacci(n):
    a,b=1,1
    i=1
    while i<n:
        b,a = a+b,b
        i +=1
    print(a)
Fibonacci(9)
"""

#6-1英文字元頻率統計
"""
s = 'ahduh aidhiufhbfuh adnuasdnba'
d={}
for i in s:
    if 'a'<=i<='z':
        d[i]=d.get(i,0)+1

s = sorted(d,reverse=True)
for i in s:
    print(i,d[i])
"""
#6-2中文字元頻率統計
"""
s = 'hsua uhduahu阿虎毒啊 阿好速度啊哈shauhdia  a d i2 213231huwqusn1 我是'
d = {}
for i in s:
    d[i]=d.get(i,0)+1
s = sorted(d,reverse=True)
for i in s:
    print(i,d[i])
"""
#6-3隨機密碼的生成
"""
import string
d = string.digits  # 輸出包含數字0~9的字串
lo = string.ascii_lowercase  # 包含所有小寫字母的字串
up = string.ascii_uppercase  # 包含所有大寫字母的字串
list = list(d)+list(lo)+list(up)
n = len(list)
st=''
for j in range(0,10):
    for i in range(0,8):
        s = random.randint(0,n-1)
        st=st+str(list[s])
    print(st)
    st = ''
"""
#6-4重複元素的判定
"""
def judge_list(list):
    dic = {}
    for i in list:
        dic[i]=dic.get(i,0)+1
    if max(dic.values())>1:
        print('pass')
        return True
    else:
        print('no pass')

list=[1,2,3,4,5,6,7,7,7,8,9]
judge_list(list)
list=[1,2,3,4,5,6,7,10,8,123,9]
judge_list(list)
"""
#6-5上題續
"""
def judge_list(list):
    l1 = len(list)
    s=len(set(list))
    if l1==s:
        print('pass')
        return True
    else:
        print('no pass')
list1=[1,2,3,4,5,6,7,7,7,8,9]
judge_list(list1)
list=[1,2,3,4,5,6,7,10,8,123,9]
judge_list(list)
"""

#7-1輸入一個檔案和字元，統計該字元在檔案中出現的次數
txt = input('input a txtpath:')
str = input('input a str:')
s=0
f = open(txt,'r')
text = f.read()
for i in text:
    if i==str:
        s +=1
print(str,'has',s,'in txt')
"""
測試結果如下
input a txtpath:/Users/wangxingfan/Desktop/1.txt
input a strpath:s
s has 402 in txt

"""
#7-2英文檔案，大小寫字母互換
path = '/Users/wangxingfan/Desktop/1.txt'
f = open(path,'r')
str = f.read()
j=''
for i in str:
    if i<'a':
        s = i.lower()
        j=j+s
    elif i>='a':
        s = i.upper()
        j=j+s
print(j)
print('-------------')
print(str)
f.close()

"""
測試結果如下
aabuhyybnuhybuyyBUAYDABNubqdywubYBYBQWYBDYQBdqbdlhqbdBUBBDEQBSQHUKJBDqbwDHQ,
DNuQDbbqdubhqd,
DnqnwdqdDNQDNQI,
DQWNDQUJDNUndnjwndj

-------------
AABUHYYBNUHYBUYYbuaydabnUBQDYWUBybybqwybdyqbDQBDLHQBDbubbdeqbsqhukjbdQBWdhq,
dnUqdBBQDUBHQD,
dNQNWDQDdnqdnqi,
dqwndqujdnuNDNJWNDJ

"""
#7-3隨機生成10*10矩陣並儲存csv
import string
import numpy as np
path = '/Users/wangxingfan/Desktop/1.csv'
d = string.digits  # 輸出包含數字0~9的字串
lo = string.ascii_lowercase  # 包含所有小寫字母的字串
up = string.ascii_uppercase  # 包含所有大寫字母的字串
list = list(d)+list(lo)+list(up)
for c in range(0,10):
    j = np.random.randint(0, len(list), 10)
    a = ''
    for i in j:
        s = list[i]+','
        a = a+s
    f = open(path,'a')
    f.write(a+'\n')
    f.close()

#檢視結果
![結果](https://img-blog.csdnimg.cn/20181117214142616.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dhbmd4aW5nZmFuMzE2,size_16,color_FFFFFF,t_70)


#7-4

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