Statistics

Problem Statement

Definition

Class:

SumThemAll

Method:

getSum

Parameters:

int, int

Returns:

long

Method signature:

long getSum(int lowerBound, int upperBound)

(be sure your method is public)

Constraints

• upperBound will be between 0 and 2,000,000,000, inclusive.
• lowerBound will be between 0 and upperBound, inclusive.

Examples

1. 0

   3

   Returns: 6

   0 + 1 + 2 + 3 = 6

2. 10

   14

   Returns: 15

   (1+0) + (1+1) + (1+2) + (1+3) + (1+4) = 15

3. 0

   0

   Returns: 0

4. 14

   53

   Returns: 296

5. 0

   2000000000

   Returns: 82000000002

6. 5926

   62156805

   Returns: 2111611992

7. 24660

   308357171

   Returns: 11379854844

8. 32576

   1187277838

   Returns: 47450522385

9. 30083

   1104702813

   Returns: 44343555461

10. 3376

    990596642

    Returns: 40030571409

11. 3452

    685899146

    Returns: 26635849751

12. 10386

    1350455562

    Returns: 53789852358

13. 13883

    550507626

    Returns: 20942250128

14. 4726

    1375866264

    Returns: 54831486417

15. 32102

    1540944656

    Returns: 61593961949

16. 15429442

    62156805

    Returns: 1633856784

17. 152775353

    984502484

    Returns: 34306678277

18. 40137836

    684916828

    Returns: 25267238046

19. 221259239

    990596642

    Returns: 32012397122

20. 225405078

    268762620

    Returns: 1641427866

21. 602551867

    730664533

    Returns: 5323398745

22. 309745886

    1375866264

    Returns: 43397539331

23. 48385571

    93023718

    Returns: 1696931471

24. 307683830

    387211787

    Returns: 3080493269

25. 217919355

    1217595056

    Returns: 40704803271

26. 11509292

    12156805

    Returns: 19444113

27. 202775353

    934502484

    Returns: 30045267264

28. 71135888

    134916828

    Returns: 2313580250

29. 221259239

    940596642

    Returns: 29684413907

30. 206642457

    218762620

    Returns: 420741325

31. 444440

    909091

    Returns: 13449060

32. 199

    2000000000

    Returns: 81999998121

33. 925062854

    2000000000

    Returns: 44977706723

34. 700

    1692582010

    Returns: 68136892009

35. 2000000000

    2000000000

    Returns: 2

36. 0

    0

    Returns: 0

37. 1

    1

    Returns: 1

38. 7

    7

    Returns: 7

39. 999999999

    999999999

    Returns: 81

40. 0

    2000000000

    Returns: 82000000002

41. 9482935

    893629438

    Returns: 35383256617

42. 24660

    308357171

    Returns: 11379854844

43. 1012340123

    1987659876

    Returns: 40475769791

44. 2

    2

    Returns: 2

45. 246605435

    2000000000

    Returns: 73064617967

46. 213124

    2000000000

    Returns: 81995145720

47. 1

    1

    Returns: 1