I have the following data here
in first row char (a b d a),
number are in second row (5 9 6 1)
how get char of max number in second row and how to increase the numbers in the second row with the condition (for example, if char= a, then increase the number by 10%)
I have the following data:
a b c d
5 9 6 0
3 1 3 2
Characters in the first row, numbers in the 2 and 3 rows.
how can I change the second row depending on the numbers in 3 row.
for example
in the 3rd row if number=3, then the number is multiplied by 2, if in the 3rd row the number is 1, then +...
@JamesHeslip I'm not sure what exactly you're looking for. ⊢ f g is a called a hook and can also be constructed as f∘g⍨, but I don't know if that's "simpler":
@Adám can you help? in this example stackoverflow.com/questions/60362115/… if i need multiply by different numbers, such as 1.03. with all the columns. what to do in this situation?
@Adám how complicated everything is) in this version it’s just a multiplication, without reference to the numbers from the 3rd line. but somehow you can make a binding. type. if there is a number 3 in 3 row, then multiply by 1.03. if the 3rd line has the number 2, then we multiply by 2
@cickness You really should keep the rows in separate variables. Then you can create condition masks and transform those to multipliers or additions. E.g. values×←(2*2=control)×(1.03*3=control) etc. Of course, you can just write data[3;] instead of control and data[2;] instead of values but readability drops quickly.
@Adám can you look? tio.run/##SyzI0U2pTMzJT/… I make a mask, but the numbers did not increase. when there are 2 "values" this meaning that 2 different variables or will it grind? I don’t understand how to update
Here's a very simple problem I can't find an elegant, short solution for: Take a boolean array like 1 1 0 0 0 1 1 1 0 1 0 1 1 as input. We want to produce the output 2 3 1 2. Looking for a solution in J.
@S.S.Anne i'll ask the opposite - why not use symbols? Besides not having to set up a keyboard input, i don't think there's much to lose, and in the end the code is way more easily readable
@S.S.Anne If you're serious about understanding the deeper reason you might prefer symbols, there are some good, approachable videos on youtube by Aaron Hsu. Also many pieces by Ken Iverson himself. It's a subject with a pretty substantial literature. It may not persuade you, but at least you'll understand the argument fully. It's a pretty deep subject imo.
@Adám Sorry I was referring to his question about why did they have to use symbols, not the ascii <-> symbol translation problem which is a much smaller (more trivial) impl detail in the process of programming itself.
