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Top Forums UNIX for Dummies Questions & Answers Relationships between adjacent digits Post 302353192 by uiop44 on Monday 14th of September 2009 08:34:04 PM
Old 09-14-2009
Quote:
Originally Posted by daPeach
If it's not homeworks, indeed, it very looks like...any problem can be solved with bash, using any other external program...when you know exactly what it's about...
This is mathematics puzzle to me, and as such I won't be helpful.
It's not undoable: parsing each line of the file, getting for each line what section(s) of it you want to keep, using arithmetics evaluation to compare with what section of the line...

When I see it 'bash coded', I might understand...
...by now, I suggest maintainers/moderators to transfer this post to a more apropriate place such as 'experts...', erasing my message.

wouldn't you?
Thanks for some perspective dapeach. I'm flattered that you guys think I sound like a UNIX professor.

I was thinking this could be done simply and was just a matter of me not knowing the shell arithmetic functions and use of conditionals.

Perhaps it's more complex than I thought. Maybe it could it be done with string comparison (since there are only so many matching triplet possibilities)?

I'll leave this question up for a few more hours. If no one answers I'll remove it.

I apologise if this question is not really a good one for unix.com (i.e. it wouldn't really be a good learning exercise). I didn't think about it enough. But I did make it sound like a homework assigment... so maybe I get a +1 for writing style.
 

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xdr_simple(3N)															    xdr_simple(3N)

NAME
xdr_simple, xdr_bool, xdr_char, xdr_double, xdr_enum, xdr_float, xdr_free, xdr_hyper, xdr_int, xdr_long, xdr_longlong_t, xdr_quadruple, xdr_short, xdr_u_char, xdr_u_hyper, xdr_u_int, xdr_u_long, xdr_u_longlong_t, xdr_u_short, xdr_void - library routines for external data representation SYNOPSIS
DESCRIPTION
XDR library routines allow C programmers to describe simple data structures in a machine-independent fashion. Protocols such as remote procedure calls (RPC) use these routines to describe the format of the data. These routines require the creation of XDR streams (see xdr_create(3N)). Routines See rpc(3N) for the definition of the data structure. Note that any buffers passed to the XDR routines must be properly aligned. It is suggested that malloc(3C) be used to allocate these buffers or that the programmer insure that the buffer address is divisible evenly by four. translates between booleans (C integers) and their external representations. When encoding data, this filter produces values of either or This routine returns if it suc- ceeds, otherwise. translates between C characters and their external representations. This routine returns if it succeeds, otherwise. Note: encoded characters are not packed, and occupy 4 bytes each. For arrays of characters, it is worthwhile to consider or (see xdr_complex(3N)). translates between C precision numbers and their external representations. This routine returns if it succeeds, otherwise. translates between C (actually integers) and their external representations. This routine returns if it succeeds, otherwise. translates between C and their external representations. This routine returns if it succeeds, otherwise. Generic freeing routine. The first argument is the XDR routine for the object being freed. The second argument is a pointer to the object itself. Note: the pointer passed to this routine is not freed, but what it points to is freed (recursively, depending on the XDR routine). translates between ANSI C integers and their external representations. This routine returns if it succeeds, otherwise. translates between C integers and their external representations. This routine returns if it succeeds, otherwise. translates between C integers and their external representations. This routine returns if it succeeds, otherwise. translates between ANSI C integers and their external representations. This routine returns if it succeeds, otherwise. This routine is identical to translates between IEEE quadruple precision floating point numbers and their external representations. This routine returns if it succeeds, otherwise. translates between C integers and their external representations. This routine returns if it succeeds, otherwise. translates between C characters and their external representations. This routine returns if it succeeds, otherwise. translates between unsigned ANSI C integers and their external representations. This routine returns if it succeeds, otherwise. A filter primitive that translates between a C integer and its external representation. This routine returns if it succeeds, otherwise. translates between C integers and their external representations. This routine returns if it succeeds, otherwise. translates between unsigned ANSI C integers and their external representations. This routine returns if it succeeds, otherwise. This routine is identical to translates between C integers and their external representations. This routine returns if it succeeds, otherwise. This routine always returns It may be passed to RPC routines that require a function parameter, where nothing is to be done. MULTITHREAD USAGE
Thread Safe: Yes Cancel Safe: Yes Fork Safe: No Async-cancel Safe: No Async-signal Safe: No These functions can be called safely in a multithreaded environment. They may be cancellation points in that they call functions that are cancel points. In a multithreaded environment, these functions are not safe to be called by a child process after and before These functions should not be called by a multithreaded application that support asynchronous cancellation or asynchronous signals. SEE ALSO
malloc(3C), rpc(3N), xdr_admin(3N), xdr_complex(3N), xdr_create(3N). xdr_simple(3N)
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