-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Tuesday, November 06, 2012 4:07 AM
To: 'Programming forum'
Subject: Re: [Jprogramming] Appending two numbers to form a new number
500+".(":12),":345
12845
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of PackRat
Sent: Thursday, July 14, 2011 11:50 PM
To: Programming forum
Subject: [Jprogramming] Appending two numbers to form a new number
I wish to append the digits of two numbers to form a new number:
12 345 --> 12345
I'm sure this is elementary, but I'm currently stumped. Here's some data
(which in reality would have been read in from a CSV file and then
transposed):
aa=. 2 7 $ 6;30;1;17;119;118;116;63;2;5;17;103;14;1
+--+--+-+--+---+---+---+
|6 |30|1|17|119|118|116|
+--+--+-+--+---+---+---+
|63|2 |5|17|103|14 |1 |
+--+--+-+--+---+---+---+
Then I pulled out the numeric data pairs, converted them to literals, and
appended them:
b=. ( ": every 0{aa ) ,. ( ": every 1{aa )
6 63
30 2
1 5
17 17
119103
11814
1161
Just for visual purposes here (NOT in J!), I substituted * for spaces, to
show what's happening:
6**63*
30*2**
1**5**
17*17*
119103
11814*
1161**
However, what I want to end up with is this, no spaces, different
lengths:
663
302
15
1717
119103
11814
1161
To attempt to do this, I did the following:
spc=. ' ' E. every b
0 1 1 0 0 1
0 0 1 0 1 1
0 1 1 0 1 1
0 0 1 0 0 1
0 0 0 0 0 0
0 0 0 0 0 1
0 0 0 0 1 1
keepmask=. (0 = spc)
1 0 0 1 1 0
1 1 0 1 0 0
1 0 0 1 0 0
1 1 0 1 1 0
1 1 1 1 1 1
1 1 1 1 1 0
1 1 1 1 0 0
I thought that the following would accomplish what I wanted, but it does
NOT:
nospc=. keepmask # each b
+-+-+-+-+-+-+
|6| | |6|3| |
+-+-+-+-+-+-+
|3|0| |2| | |
+-+-+-+-+-+-+
|1| | |5| | |
+-+-+-+-+-+-+
|1|7| |1|7| |
+-+-+-+-+-+-+
|1|1|9|1|0|3|
+-+-+-+-+-+-+
|1|1|8|1|4| |
+-+-+-+-+-+-+
|1|1|6|1| | |
+-+-+-+-+-+-+
Essentially, this puts me right back where I started, without accomplishing
anything. I thought it would be a very straightforward process to append
the digits of two numbers--it's sort of the reverse of what was discussed
here recently. The final step, of course, is to convert the new literal
back into a number (but that part's easy!).
I appreciate any help with this--thanks in advance!
Harvey
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