---11---
Question：
>Write a program which accepts a sequence of comma separated 4 digit binary numbers as its input and then check whether they are divisible by 5 or not. The numbers that are divisible by 5 are to be printed in a comma separated sequence.
>Example: 0100,0011,1010,1001
>Then the output should be:1010
Hints:
>In case of input data being supplied to the question, it should be assumed to be a console input.
Solution：
解法一：
解法二：
解法三：
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Question：
>Write a program, which will find all such numbers between 1000 and 3000 (both included) such that each digit of the number is an even number.The numbers obtained should be printed in a comma-separated sequence on a single line.
Hints:
In case of input data being supplied to the question, it should be assumed to be a console input.
Solution：
解法一：
解法二：
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Question：
>Write a program that accepts a sentence and calculate the number of letters and digits.
>Suppose the following input is supplied to the program:hello world! 123
>Then, the output should be:
LETTERS 10
DIGITS 3
Solution：
解法一：
解法二：
上述两种解决方法中显示了两种不同地格式化方法
解法三：
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Question：
>Write a program that accepts a sentence and calculate the number of upper case letters and lower case letters.
>Suppose the following input is supplied to the program:Hello world!
>Then, the output should be:
UPPER CASE 1
LOWER CASE 9
Solution：
解法一：
解法二：
代码与解法一 一样，打印方法不同。
解法三：
结果：
解法四：
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Question：
>Write a program that computes the value of a+aa+aaa+aaaa with a given digit as the value of a.
>Suppose the following input is supplied to the program: 9
>Then, the output should be: 11106
解法一：
解法二：
