do+assignments

匡殷纯4009数据结构运行的时候出现Null pointer assignment是什么意思?我应该怎样解决这样的问题呢? -
翁哑克17662794399 ______ http://zhidao.baidu.com/q?word=Null+pointer+assignment&ct=17&pn=0&tn=ikaslist&rn=10 建议:提问前请先搜索.

匡殷纯4009英语单选 - 虚拟语气__for your laziness ,you could have finished the assignment by now.A weren't it.B had it not been. -
翁哑克17662794399 ______[答案] 选B 这是过去时的虚拟 前面是had+__,后面是should,could+have(本来应该能---- 这是一种形式记住就行了

匡殷纯4009Python 错误警告 local variable 'a' referenced before assignment -
翁哑克17662794399 ______ 1 2 3 4 5 6 7 deff1(): a=12 deff2(a=a): a+=1 printa returnf2 printf1()() >>> def f1(): ... a=12 ... def f2(a=a): ... a+=1 ... print a ... return f2 ... >>> f1()() 13

匡殷纯4009do you prefer to do couples of small assignments or one or two big assignmen -
翁哑克17662794399 ______ In my point of view,Small assignments are easily dealt with,while the big assignment are kind of difficult. maybe most of the people will choose the former ones,but for me,I dont agree with. I think I will choose one or two big assignment because that it ...

匡殷纯400916. 他们用了三天时间来做老师给他们的任务.(spend+时间+doing…, assignment) -
翁哑克17662794399 ______ they spent three days on doing the assignment delivered/given by their teacher.

匡殷纯4009python求助: 'str' object does not support item assignment -
翁哑克17662794399 ______ q[y]=＂_＂ q是一个字符串,而字符串是不可变对象,你不能用下标赋值的方式去改变字符串 . 至于a=123 b=123,使用同一内存地址也很好理解. 在python中,数字,字符串和元组都是不可变对象.比如字符串,如果被python判定为是短字符串,那么为了节省内存空间,让两个变量指向同一个内存地址. 至于多少个字符是短字符串,我在python2.7中测试的长度是20及20以内的都算短字符串.

匡殷纯4009matlab编程出现 Subscripted assignment dimension mismatch. -
翁哑克17662794399 ______ 你说的问题在什么位置出现的?在我这里运行没发现你说的现象,可以运行到最后出图,但有警告信息:>> Warning: Divide by zero.(Type ＂warning off MATLAB:divideByZero＂ to suppress this warning.)> In d:\MATLAB6p5\work\zd529259179....

匡殷纯4009MATLAB 报错Subscripted assignment dimension mismatch. -
翁哑克17662794399 ______ 假设X=[1 2 3;4 5 6]; 运行以下代码 X=[1 2 3; 4 5 6]; [sx,sy] = size(X); Xi = zeros(sy+2,sx+2);各变量大小为 K>> whos Name Size Bytes Class Attributes X 2x3 48 double Xi 5x4 160 double fid 1x1 8 double fni 1x5 10 char sx 1x1 8 double sy 1x1 8 double请看X,Xi的维数,尺寸不一致

匡殷纯4009刚学习JAVA,请问这段程序中的tank与assignment的关系是??? -
翁哑克17662794399 ______ 你这是坦克大战的代码吧.Assignment可以看成给每一关分配多少个级别和种类的坦克.从面向对象的角度来看,坦克本身是不负责这个工作的,所以会多弄一个Assignment类.多个打印是因为每一关或者说每一轮的情况不一样吗,打出来看看. Tank本身是个类,里面有个int型变量level,而且这个变量的访问属性估计是public,所以你可以直接通过tank.level对这个值进行修改.

匡殷纯4009matlab新手!!!求助啊,Subscripted assignment dimension mismatch错误 -
翁哑克17662794399 ______ 读进来的图必须是灰度图,彩色图不行,大小必须是192*168 (不是128*192) 可以在 A(:,:,flag) = am;这一句处设一个断点,运行到这里以后,在命令行查看am,pm大小 (size(am))