Edit History

Rev | Time | Changes | Operations |
---|---|---|---|

Log | |||

41 | 2014-10-05 11:43:47 | +5 -3 line(s) | [View this version, source] [Diff to previous] |

Better formatting for entry with function name "sum". | |||

40 | 2014-10-05 11:41:00 | +11 -0 line(s) | [View this version, source] [Diff to current|previous] |

Added a solution without helper functions. Similar to sum-max2-sqr, but more concise. | |||

39 | 2014-09-07 04:17:53 | +0 -8 line(s) | [View this version, source] [Diff to current|previous] |

Removed because same solution | |||

38 | 2014-08-02 19:43:27 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

Bug fixes | |||

37 | 2014-08-02 19:11:42 | +8 -0 line(s) | [View this version, source] [Diff to current|previous] |

arithmetic version of sum-max2 squares | |||

36 | 2014-08-02 18:49:08 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

fixed bug in sum-sq-max2 | |||

35 | 2014-08-02 18:47:01 | +17 -0 line(s) | [View this version, source] [Diff to current|previous] |

Short version of sum of squares using cond | |||

34 | 2014-07-20 03:18:28 | +1 -0 line(s) | [View this version, source] [Diff to current|previous] |

Add comment on wrong answer | |||

33 | 2014-05-20 16:50:08 | +15 -0 line(s) | [View this version, source] [Diff to current|previous] |

simple solution. | |||

32 | 2014-04-24 11:17:35 | +8 -0 line(s) | [View this version, source] [Diff to current|previous] |

added a solution | |||

31 | 2014-04-14 13:36:27 | +15 -0 line(s) | [View this version, source] [Diff to current|previous] |

different Ex 1.3 solution | |||

30 | 2014-01-26 08:23:49 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

Comment last program | |||

29 | 2013-12-23 18:07:31 | +0 -14 line(s) | [View this version, source] [Diff to current|previous] |

28 | 2013-10-15 14:20:05 | +16 -0 line(s) | [View this version, source] [Diff to current|previous] |

another solution added (tag: make it clearly) | |||

27 | 2013-08-16 17:06:01 | +2 -0 line(s) | [View this version, source] [Diff to current|previous] |

point out a error in one of the submitted codes How Si Wei | |||

26 | 2013-07-23 03:07:50 | +29 -0 line(s) | [View this version, source] [Diff to current|previous] |

eugenek | |||

25 | 2013-06-19 23:59:45 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

Removed unneeded parenthesis around consequent variable x in if combination. | |||

24 | 2013-06-19 23:25:34 | +20 -0 line(s) | [View this version, source] [Diff to current|previous] |

;; no min used (define (square x) (* x x)) (define (sum-of-squares x y) (+ (square x) (square y))) (define (biggest x y) (if (> x y) (x) y)) (define (input x y z) (sum-of-squares (biggest x y) (biggest y z))) | |||

23 | 2013-05-12 09:14:26 | +28 -0 line(s) | [View this version, source] [Diff to current|previous] |

another solu~ | |||

22 | 2013-05-06 15:30:03 | +2 -0 line(s) | [View this version, source] [Diff to current|previous] |

Add comment on wrong answer | |||

21 | 2013-04-28 23:46:07 | +8 -0 line(s) | [View this version, source] [Diff to current|previous] |

ex1.3: 3 item only need compare twice | |||

20 | 2013-01-10 12:07:10 | +27 -0 line(s) | [View this version, source] [Diff to current|previous] |

A simpler implementation using larger as a helper to compare two values micky | |||

19 | 2013-01-08 13:41:00 | +0 -19 line(s) | [View this version, source] [Diff to current|previous] |

delete wrong answer (e.g. a=b=c=1; a=b=1, c=2): (define (sum-of-squared-largest-two a b c) (+ (if (or (> a b) (> a c)) (* a a ) 0) (if (or (> b a) (> b c)) (* b b ) 0) (if (or (> c a) (> c b)) (* c c ) 0))) | |||

18 | 2012-06-20 20:40:10 | +0 -13 line(s) | [View this version, source] [Diff to current|previous] |

Don't work... (define (square a) (* a a)) (define (two-greatest-first? x y z) (and (>= x z) (>= x y))) (define (sum-of-greatest-squares x y z) (if (two-greatest-first? x y z) (+ (square x) (square y)) (sum-of-greatest-squares y z x))) | |||

17 | 2012-02-27 04:44:47 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

Useful expansions | |||

16 | 2012-02-27 04:38:54 | +15 -0 line(s) | [View this version, source] [Diff to current|previous] |

I added a variation that hadn't been done yet | |||

15 | 2011-11-06 20:41:05 | +31 -0 line(s) | [View this version, source] [Diff to current|previous] |

Added: Nov-6-2011 - Since the exercise was write **a** procedure, this adheres to that, perhaps a complex procedure would have been allowed (nested) but would have been perhaps hard to read. Christian Boyd christian.boyd@gmail.com | |||

14 | 2011-06-17 18:37:57 | +11 -0 line(s) | [View this version, source] [Diff to current|previous] |

Uses no abstracted helper functions. | |||

13 | 2010-09-05 16:08:43 | +19 -0 line(s) | [View this version, source] [Diff to current|previous] |

Another solution to this problem - not the most elegant, but it would be refactored to be nicer. ChrisWilson | |||

12 | 2010-07-21 07:10:03 | +3 -2 line(s) | [View this version, source] [Diff to current|previous] |

simplify logic, there's no need to make one more evaluation | |||

11 | 2010-03-23 13:29:51 | +3 -3 line(s) | [View this version, source] [Diff to current|previous] |

edited comments to show that my solution uses recursion | |||

10 | 2010-03-23 12:58:29 | +14 -0 line(s) | [View this version, source] [Diff to current|previous] |

added my solution as well | |||

9 | 2010-03-08 22:25:01 | +1 -3 line(s) | [View this version, source] [Diff to current|previous] |

Removed category; added link to solutions page | |||

8 | 2010-03-08 22:08:31 | +5 -0 line(s) | [View this version, source] [Diff to current|previous] |

Added navigation and category | |||

7 | 2009-10-05 08:43:13 | +5 -0 line(s) | [View this version, source] [Diff to current|previous] |

by truwater@gmail.com | |||

6 | 2009-08-29 19:43:34 | +10 -0 line(s) | [View this version, source] [Diff to current|previous] |

using techniques up to only this point | |||

5 | 2009-07-17 20:26:49 | +12 -0 line(s) | [View this version, source] [Diff to current|previous] |

Added another solution | |||

4 | 2009-07-05 16:13:40 | +1 -1 line(s) | [View this version, source] [Diff to current|previous] |

fixed procedure name | |||

3 | 2009-07-05 16:10:10 | +15 -0 line(s) | [View this version, source] [Diff to current|previous] |

added another method | |||

2 | 2009-01-22 01:26:03 | +22 -0 line(s) | [View this version, source] [Diff to current|previous] |

added second solution | |||

1 | 2008-06-21 14:12:18 | +19 -0 line(s) | [View this version, source] [Diff to current|previous] |

create solution page for SICP ex 1.3 | |||

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