What's New -  May, 2011

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May 3, 2011:  Fill this 5x5 grid box with the letters M, U, S, I, C.  The constraint is that the same letter must not appear more than once in any column, row or diagonal.  Today's program,  Music Box Puzzle, was derived from the May 1st page of my favorite source for program ideas: the Mensa 365 Brain Puzzlers Calendar 
 

 

May 10, 2011:  If 5 digit integers are divided by the sum of their digits, about 3000 of them divide exactly.  The beginner's level program, Recurring Quotients, asks which of the resulting exact integer quotient values occurs most often.   The program uses 36 user written lines of Delphi code to answer the question.  Unfortunately, I built the web page describing how to solve it, but forgot to upload the code.  Links are now there.   

May 17, 2011:  Time for one more Beginner's Level program before we head off to another graduation. Last weekend our oldest granddaughter graduated from University of North Carolina with a BS in Biology, next weekend the oldest grandson graduates from high school with plans to start his Engineering major at Old Dominion University next year.   No programmers so far, but there's still hope among the 5 grandchildren not yet committed.  Actually, there are probably more engineers who can program than there are programmers who can engineer, so engineering is my recommended major even for those with an interest in computers.

The puzzle requires us to assign unique digits to each of the letters in the word KNIGHT in such a way that the numeric equivalent is a perfect square and the numeric value of KING  is also a perfect square.  It was adapted from Mathematical Bafflers , Angela Dunn,  1980, Dover Publications.  About 35 lines of user written code in Squared Chess Pieces finds the unique solution.  The link is to a Beginner's page which contains this new program along with 17 other short programs. 

 


 


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