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HP 17bii+ solver problem, another solution



#2

A few weeks ago I posted this solver equation that would not work on the 17bii+ (although it apparently worked on the older 17bii):

sumofdigits=sigma(i:0:log(n):1:mod(n:10)+0xL(n:ip(n/10)))

A fellow forum member (as well as an HP rep) offered a solution that worked, but it involved defining and using another variable and using it in place of n. Today I determined that the offending part of the original equation was the *ip*(n/10), and I found that the following solution also works (and does not require a second variable):

sumofdigits=sigma(i:0:log(n):1:mod(ip(n):10)+0xL(n:n/10))

Interesting.


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