软件工程四则运算性能提升

佚名 6年前 (2019-04-07) 随笔 664人围观抢沙发百度已收录

源码地址：https://github.com/Wallrving/Wallhub

PSP表格

SRE实战互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。

		预计耗时（分钟）	实际耗时（分钟）
Planning	计划	30	20
Estimate	估计这个任务需要多少时间	30	20
Development	开发	170	330
Analysis	需求分析	30	60
Design Spec	生成设计文档	20	30
Design Review	设计复审(与同事审核设计文档)	/	/
Coding Standerd	代码规范（为目前的开发制定合适的规范）	/	/
Design	具体设计	120	240
Coding	具体编码	60	60
Code Review	代码复审	60	60
Text	测试（自测，修改代码，提交修改）	30	30
Reporting	报告	60	60
Text Report	测试报告	55	55
Size MeaSurement	计算工作量	5	5
Postmortem & Process Improvement Plan	事后总结，并提出过程改进计划	/	/
Sum	合计	410	560

（1）功能提升

能自动生成一定数量的四则运算题目：

代码如下：

import random
from fractions import Fraction

def zhengshu():
    fh = ['＋', '－', '×', '÷']
    a = random.randint(0, 3)
    n1 = random.randint(1, 100)
    n2 = random.randint(1, 100)
    result = 0
    if a == 0:
        result = n1 + n2
    elif a == 1:
        n1, n2 = max(n1, n2), min(n1, n2)
        result = n1 - n2
    elif a == 2:
        result = n1 * n2
    elif a == 3:
        n1, n2 = max(n1, n2), min(n1, n2)
        while n1 % n2 != 0:
            n1 = random.randint(1,100)
            n2 = random.randint(1,100)
            n1, n2 = max(n1, n2), min(n1, n2)
        result = int(n1/n2)
    print(n1, fh[a], n2, '=', end='')
    return result

def fenshu():
    fh = ['＋', '－', '×', '÷']
    a = random.randint(0, 3)
    t1 = random.randint(1, 100)
    t2 = random.randint(t1, 100)
    n1 = Fraction(t1, t2)
    t3 = random.randint(1, 100)
    t4 = random.randint(t1, 100)
    n2 = Fraction(t3, t4)
    result = 0
    if a == 0:
        result = n1 + n2
    elif a == 1:
        n1, n2 = max(n1, n2), min(n1, n2)
        result = n1 - n2
    elif a == 2:
        result = n1 * n2
    elif a == 3:
        n1, n2 = max(n1, n2), min(n1, n2)
        result = n1 / n2
    print(n1, fh[a], n2, '=', end='')
    return result

def newtest():
    opr = ['＋', '－', '×', '÷']
    print('输入题库所需要的题目数量')
    n=int(input())
    rjg=[]
    m=0
    while m<=(n-1):
        fh = random.randint(0, 4)
        if fh==0:
            print(m+1,end='、')
            rjg.append(zhengshu())
            print(' ')
        else:
            print(m+1,end='、')
            rjg.append(fenshu())
            print(' ')
        m=m+1
    m=0
    print('答案：')
    while m<=(n-1):
        print(m+1,'、',rjg[m])
        m=m+1


print('1、四则运算')
print('2、制作题库')
n=int(input())
if n==1:
    print('input "0000" to Quit')
    while True:
        fh = random.randint(0, 4)
        if fh == 0:
            rjg = zhengshu()
            jg = input()
            if jg == '0000':
                break;
            sr = Fraction(jg)
            if sr == rjg:
                print('right')
            else:
                print('error. the Tight answer is', rjg)
        else:
            rjg = fenshu()
            jg = input()
            if jg == '0000':
                break;
            sr = int(jg)
            if sr == rjg:
                print('right')
            else:
                print('error. the Tight answer is', rjg)
if n==2:
    newtest()