Codelab Assignment 2

1. Write a program that reads one integer value at a time from the standard
input. If the collection of input integers contains at least one
7 and at least one 11, the program should write "yes" (without the "s
to the standard output.  Otherwise itshould write "no" to the standard output.

Sample input
  5 9 7 10 11 7 7 9
Sample output
  yes

2. Write a program that reads one integer value at a time from the standard
input. If the collection of input integers contains EXACTLY one 7
and at EXACTLY one 11, the program should write "yes" (without the
"s) to the standard output.  Otherwise it
should write "no" to the standard output.

Sample input
  5 9 7 10 11 7 7 9
Sample output
  yes


3. Write a program that reads one integer value at a time from the standard
input. If the collection of input integers contains EXACTLY one 7
and at EXACTLY one 11, AND the 7 occurs before the 11, the program
should write "yes" (without the "s) to the standard output.  Otherwise
it should write "no" to the standard output.

Sample input
  5 9 7 10 11 7 7 9
Output
  no
Sample input
  5 9  10 11 7  9
Output
  no
Sample input
  5 9 7 10 11  9
Output
  yes



4. Write a program that reads PAIRS of integers from the standard input.
If the sum of the two integers in a pair is 10 then the program should
print the pair to the standard output.

Sample input:
  1 11
 12 -2
  4  6
  4  7

Sample output:

  12 -2
   4  6


5. Write a program that reads PAIRS of integers from the standard input.
The program should print the number of pairs whose sum is 20 to
the standard output.

Sample input:
  1 11
 12 -2
 14  6
  4  7

Sample output:
  1



6. Write a program that reads PAIRS of integers from the standard input.
The program should compute sum of each pair and print the largest
sum found to the standard output.

Sample input:
  1 11
 12 -2
 17  5
 14  6
  4  7

Sample output:
  22


7. Write a program that reads two integers from the standard input.
It should then print all the postive integers that evenly are strictly
less than the first integer and evenly divisible by the second integer.


Sample input:
28 7
Sample output:
7
14
21

Sample input:
29 7
Sample output:
7
14
21
28