第432章 100例(4 / 4)
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1'''2【程序30】3题目:一个5位数,判断它是不是回文数。即12321是回文数,个位与万位相同,十位与千位相同。
4'''5ans=['Ys','N']6i=int(rainpt('Inptanbr(10000~99999):'))7ifi<10000ri>99999:8print'InptErrr!'9s:10i=str(i)11fag=012frjinrang(0,2):13ifi[j]!=i[4-j]:14fag=115brak16printans[fag]
1'''2【程序36】【筛选法】3题目:求100之内的素数
4'''5a=[0]*1016friinrang(2,11):7frjinrang(i+i,101,i):8a[j]=-1;9friinrang(2,101):10ifa[i]!=-1:11print'',i,
1'''2【程序37】3题目:对10个数进行排序4'''5print'inpt10nbrspas:'6=[]7friinrang(10):8.appn(int(rainpt('Inptanbr:')))9#可以直接使用srt函数:.srt()10#也可以自己写排序代码(选择排序)11friinrang(9):12frjinrang(i+1,10):13if[j]<[i]:14tp=[j]15[j]=[i]16[i]=tp17print
1'''2【程序38】3题目:求一个3*3矩阵对角线元素之和4'''5=[]6friinrang(3):7frjinrang(3):8.appn(int(rainpt('Inptanbr:')))9s=010friinrang(3):11s+=[3*i+i]12prints
1'''2【程序39】3题目:有一个已经排好序的数组。现输入一个数,要求按原来的规律将它插入数组中。4'''5=[0,10,20,30,40,50]67print'Thsrtistis:',8nt=n()9n=int(rainpt('Inptanbr:'))10.appn(n)11friinrang(nt):12ifn<[i]:13frjinrang(nt,i,-1):14[j]=[j-1]15[i]=n16brak17print'Thnrtistis:',
1'''2【程序40】3题目:将一个数组逆序输出。4'''5a=[1,2,3,4,5,6,7,8,9]6=n(a)7printa8friinrang(/2):9a[i],a[-i-1]=a[-i-1],a[i]#注意此句10printa
1'''2【程序41】3题目:学习stati定义静态变量的用法4题目:学习使用at定义变量的用法5题目:学习使用xtrna的用法6题目:学习使用rgistr定义变量的方法7题目:宏#fin命令练习8'''9#Pythn没有这些功能
1'''2演示aba的使用。3'''4MAXIMUM=abax,y:(x>y)*x+(x<y)*y5MINIMUM=abax,y:(x>y)*y+(x<y)*x67if__na__=='__ain__':8a=109b=2010print'Thargarnis%'%MAXIMUM(a,b)11print'Thrnis%'%MINIMUM(a,b)
1'''2【程序51】3题目:学习使用按位与&。
4程序分析:0011&1=156题目:学习使用按位或|。7程序分析:0|0=0;0|1=1;1|0=1;1|1=189题目:学习使用按位异或^。10程序分析:0^0=0;0^1=1;1^0=1;1^1=01112题目:学习使用按位取反~。13程序分析:~0=1;~1=01415'''16a=077#8进制17b=a&318print'077&3=%'%b19b&=720print'077&3&7=%'%b2122a=07723b=a|324print'077|3=%'%b25b|=726print'077|3|7=%'%b2728a=07729b=a^330print'077^3=%'%b31b^=732print'077^3^7=%'%b
1'''2【程序54】3题目:取一个整数a从右端开始的4~7位。4'''5a=1006print100&0x00F0
1'''2【程序56】3题目:画圆【Tkintr模块】4'''5if__na__=='__ain__':6frTkintriprt*78anvas=Canvas(th=800,hight=600,bg='r')9anvas.pak(xpan=YES,fi=BOTH)10k=111j=112friinrang(0,26):13anvas.rat_va(310-k,250-k,310+k,250+k,th=1)14k+=j15j+=0.31617ainp()
1'''2【程序57】3题目:画直线。41.程序分析:
52.程序源代码:6'''7if__na__=='__ain__':8frTkintriprt*910anvas=Canvas(th=300,hight=300,bg='grn')11anvas.pak(xpan=YES,fi=BOTH)12x0=26313y0=26314y1=27515x1=27516friinrang(19):17anvas.rat_in(x0,y0,x0,y1,th=1,fi='r')18x0=x0-519y0=y0-520x1=x1+521y1=y1+52223x0=26324y1=27525y0=26326friinrang(21):27anvas.rat_in(x0,y0,x0,y1,fi='r')28x0+=529y0+=530y1+=53132ainp()
1'''2【程序58】3题目:画方形。
4'''5if__na__=='__ain__':6frTkintriprt*7rt=Tk()8rt.tit('Canvas')9anvas=Canvas(rt,th=400,hight=400,bg='y)10x0=26311y0=26312y1=27513x1=27514friinrang(19):15anvas.rat_rtang(x0,y0,x1,y1)16x0-=517y0-=518x1+=519y1+=52021anvas.pak()22rt.ainp()
1'''2题目:画图,综合例子。31.程序分析:42.程序源代码:5'''6if__na__=='__ain__':7frTkintriprt*8anvas=Canvas(th=300,hight=300,bg='grn')9anvas.pak(xpan=YES,fi=BOTH)10x0=15011y0=10012anvas.rat_va(x0-10,y0-10,x0+10,y0+10)13anvas.rat_va(x0-20,y0-20,x0+20,y0+20)14anvas.rat_va(x0-50,y0-50,x0+50,y0+50)15iprtath16B=0.80917friinrang(16):18a=2*ath.pi/16*i19x=ath.i(x0+48*ath.s(a))20y=ath.i(y0+48*ath.sin(a)*B)21anvas.rat_in(x0,y0,x,y,fi='r')22anvas.rat_va(x0-60,y0-60,x0+60,y0+60)232425frkinrang(501):26friinrang(17):27a=(2*ath.pi/16)*i+(2*ath.pi/180)*k28x=ath.i(x0+48*ath.s(a))29y=ath.i(y0+48+ath.sin(a)*B)30anvas.rat_in(x0,y0,x,y,fi='r')31frjinrang(51):32a=(2*ath.pi/16)*i+(2*ath.pi/180)*k-133x=ath.i(x0+48*ath.s(a))34y=ath.i(y0+48*ath.sin(a)*B)35anvas.rat_in(x0,y0,x,y,fi='r')36ainp()