软件测试-hw3

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int curPrime; // Value currently considered for primeness

8. int numPrimes; // Number of primes found so far.

9. boolean isPrime; // Is curPrime prime?

10. int [] primes = new int [MAXPRIMES]; // The list of prime numbers.

11.

12. // Initialize 2 into the list of primes.

13. primes [0] = 2;

14. numPrimes = 1;

15. curPrime = 2;

16. while (numPrimes < n)

17. {

18. curPrime++; // next number to consider ...

19. isPrime = true;

20. for (int i = 0; i <= numPrimes-1; i++)

21. { // for each previous prime.

22. if (isDivisible (primes[i], curPrime))

23. { // Found a divisor, curPrime is not prime.

24. isPrime = false;

25. break; // out of loop through primes.

26. }

27. }

28. if (isPrime)

29. { // save it!

30. primes[numPrimes] = curPrime;

31. numPrimes++;

32. }

33. } // End while

34.

35. // Print all the primes out.

36. for (int i = 0; i <= numPrimes-1; i++)

37. {

38. System.out.println ("Prime: " + primes[i]);

39. }

40. } // end printPrimes

 

(a)

 技术分享

(b)    如果MAXPRIMES的值等于3,则n=5的时候将发生数组越界的错误,而n=3的时候程序将正常进行

(c)n=1

(d)    node coverage:

                 TR={1,2,3,4,5,6,7,8,9,10,11,12,13}

             edge coverage:

TR={(1,2),(2,3),(2,4),(3,5),(4,11),(5,6),(5,9),(6,7),(6,8),(7,9),(8,5),(9,2),(9,10),(10,2),(11,12),(11,13),(12,11)}

Prime path Coverage

TR={[1,2,3,5,6,7,9,10],[1,2,3,5,6,8],[1,2,3,5,9,10],[1,2,4,11,12],[1,2,4,11,13],

[2,3,5,6,7,9,2],[2,3,5,9,2],[2,3,5,6,7,9,10,2],[2,3,5,9,10,2],

[3,5,6,7,9,2,3],[3,5,6,7,9,2,4,11,13],[3,5,6,7,9,2,4,11,12],[3,5,6,7,9,10,2,3],[3,5,6,7,9,10,2,4,11,13],[3,5,6,7,9,10,2,4,11,12],[3,5,9,2,3],[3,5,9,2,4,11,13],[3,5,9,2,4,11,12],[3,5,9,10,2,3],[3,5,9,10,2,4,11,13],[3,5,9,10,2,4,11,12],

[5,6,8,5],[5,6,7,9,2,3,5],[5,6,7,9,10,2,3,5],[5,9,2,3,5],[5,9,10,2,3,5],

[6,8,5,6],[6,8,5,9,2,4,11,12],[6,8,5,9,2,4,11,13],[6,8,5,9,10,2,4,11,12],[6,8,5,9,10,2,4,11,13],[6,7,9,2,3,5,6],[6,7,9,10,2,3,5,6],

[7,9,10,2,3,5,6,7],[7,9,2,3,5,6,7],

[8,5,6,8],

[9,2,3,5,9],[9,2,3,5,6,7,9],[9,10,2,3,5,9],[9,10,2,3,5,6,7,9],

[10,2,3,5,6,7,9,10],[10,2,3,5,9,10],

[11,12,11],

[12,11,13],[12,11,12]

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