Acces to a list
09-20-2015, 06:56 PM
Post: #1
 Powersoft Member Posts: 83 Joined: Feb 2015
Acces to a list
Hi all,

Need some help with my list.

L1 ={{1,2,3},{4,5,6},{8,9,1},{7,6,1}}

1. How to calculate the amount of elements (4)?
2. How to access every separate element of list L1

Thanks, for any help!

Cheers

Jan
09-21-2015, 12:39 AM
Post: #2
 Tim Wessman Senior Member Posts: 2,201 Joined: Dec 2013
RE: Acces to a list
1. SIZE
2. L1(<number>) to access further down inside, L1(<number>,<number>...) Ex: L1(2,3) returns 6 in your given list.

TW

Although I work for the HP calculator group, the views and opinions I post here are my own.
09-21-2015, 05:54 AM
Post: #3
 cyrille de brĂ©bisson Senior Member Posts: 915 Joined: Dec 2013
RE: Acces to a list
Hello,

Var[n] refers to:
if var is a list: the nth element of the list
if var is a string, the nth char of the string
if var is a vector, the nth element of the vector
if var is a matrix, the nth line of the matrix, or if n<0, the nth column
if var is an int, the nth bit of the int.

This works both in RCL and STO

var[n, m] refers to:
if var is a list: var[m] for the nth element of the list (parameter list can be up to 16 long!)
if var is a string, m chars starting at index n in the string
if var is a matrix, the element at pos n,mx
if var is an int, the m bit starting at pos n from the int

list(0):=val: adds at the end of the list

That should get you started.
Cyrille

Although I work for the HP calculator group, the views and opinions I post here are my own. I do not speak for HP.
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