Statistics

Problem Statement

        
        NOT JUMPY: 28459, 28549, 1091919, 97753, 111111
            JUMPY: 290464, 13131313, 97539753, 5

Definition

Class:

JumpyNum

Method:

howMany

Parameters:

int, int

Returns:

int

Method signature:

int howMany(int low, int high)

(be sure your method is public)

Constraints

• low is between 1 and 2,000,000,000, inclusive.
• high is between low and 2,000,000,000, inclusive.

Examples

1. 1

   10

   Returns: 9

   All the single digit numbers are jumpy, but 10 isn't since 1 and 0 differ by only 1.

2. 9

   23

   Returns: 9

   The jumpy ones are 9,13,14,15,16,17,18,19,20

3. 2000000000

   2000000000

   Returns: 0

4. 1

   13

   Returns: 10

5. 22

   99

   Returns: 56

6. 7922

   7999

   Returns: 41

7. 8000

   20934

   Returns: 3766

8. 3

   4

   Returns: 2

9. 1

   2000000000

   Returns: 127322182

10. 1354100000

    1354199999

    Returns: 0

11. 1033267184

    1039084277

    Returns: 0

12. 368623901

    745096298

    Returns: 29421953

13. 1619781555

    1671374669

    Returns: 2998934

14. 330054207

    389287129

    Returns: 3978836

15. 1479021841

    1574412682

    Returns: 6988993

16. 1073892123

    1763500664

    Returns: 34920012

17. 241467314

    484365900

    Returns: 18848044

18. 1592607457

    1996091894

    Returns: 30384634

19. 1823158726

    1857880428

    Returns: 3525792

20. 1546048761

    1887798220

    Returns: 24624641

21. 777302166

    1498897233

    Returns: 30724592

22. 245652535

    1544939342

    Returns: 75415095

23. 1303850182

    1669604261

    Returns: 26467517

24. 1769203357

    1978859279

    Returns: 16158437

25. 621165609

    1401434096

    Returns: 34561474

26. 1354327837

    1851729046

    Returns: 38708931

27. 721904111

    1520685542

    Returns: 36759865

28. 467869903

    1085150496

    Returns: 40218617

29. 792133895

    901584580

    Returns: 7904617

30. 983015434

    1306810923

    Returns: 654043

31. 1515585351

    1837259401

    Returns: 23874620

32. 1003570298

    1323340801

    Returns: 2104265

33. 1875376679

    1969453691

    Returns: 7027822

34. 1114211617

    1310371035

    Returns: 1121384

35. 1403905192

    1879993713

    Returns: 35676698

36. 1076003968

    1851093960

    Returns: 41296931

37. 1905291488

    1964858599

    Returns: 6308065

38. 1697410152

    1712122067

    Returns: 1178211

39. 1657126930

    1956108164

    Returns: 22088557

40. 1536461910

    1924074849

    Returns: 27379787

41. 2756

    1361498984

    Returns: 79383250

42. 1193

    191999890

    Returns: 16804464

43. 8918

    1169349842

    Returns: 76084954

44. 9493

    1509208000

    Returns: 91504183

45. 17400

    827420065

    Returns: 63649081

46. 13259

    1565443940

    Returns: 94597382

47. 9368

    870993442

    Returns: 67988594

48. 17209

    334943430

    Returns: 26953460

49. 3234

    196123567

    Returns: 17378362

50. 9994

    20795079

    Returns: 2552577

51. 20

    205

    Returns: 111

52. 19

    20

    Returns: 2

53. 1

    2000000000

    Returns: 127322182

54. 11

    2000000000

    Returns: 127322173

55. 34

    425342523

    Returns: 34522091

56. 31

    1900000053

    Returns: 119225983

57. 1

    1234567

    Returns: 202174

58. 1000000000

    2000000000

    Returns: 51233764

59. 1223

    1999878453

    Returns: 127321646

60. 1456

    13987456

    Returns: 1597294

61. 1029

    923793743

    Returns: 70251287

62. 2

    1999999999

    Returns: 127322181

63. 58

    58

    Returns: 1

64. 99

    9999999

    Returns: 1459616

65. 1

    1974979797

    Returns: 127028615

66. 10

    923793743

    Returns: 70251814

67. 13554267

    293446455

    Returns: 22692631

68. 1423

    1998931839

    Returns: 127321579