New Topic
GeoGebraTopicQuestionEnglish
Properties
Category English
Tags string, list, empty element
Due On 2021-03-12
Similar Topics
Statistics
Comments
3
Participants
3
Subscribers
3
Votes
1
Views
445

How to remove empty elements in a string list?

jospercomp shared this question 2 years ago
Answered

input

list1={"ABC","","","BCA",""","CBA"}

output

list2={"ABC","BCA","CBA"}

1 The same question
Best Answer
photo
mathmagic ● 2 years ago

KeepIf(¬(T ≟ ""), T, list1)

Comments (3)

photo
2
Michael Borcherds ● 2 years ago 

list1 = {"ABC", "", "", "BCA", "", "CBA"}
RemoveUndefined(Sequence(If(Element(list1, i) ≠ "", Element(list1, i), ?), i, 1, Length(list1)))

Reply
photo
1
jospercomp ● 2 years ago 

var n = ggbApplet.getValue("n");
var s = "";
var c = 0;
var str = "";
for (var i = 1; i <= n; i++) {
ggbApplet.evalCommand("v=Element(l2," + i + ")")
s = ggbApplet.getValueString("v");
if (s != null) {
if (c == 0)
str = str + "l3={\"" + s + "\"";
else
str = str + ",\"" + s + "\"";
c++;
}
}
str = str + "}";
ggbApplet.evalCommand(str);

Reply
photo
3
mathmagic ● 2 years ago ●

KeepIf(¬(T ≟ ""), T, list1)

Reply
Leave a Comment
 
Attach a file
© 2023 International GeoGebra Institute