How to find from end of string?

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#1

Hi,
I need to use string.find, that it will find from end to start, how can i do it? (so it will return the las result)

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#2

I am unsure of what you mean, you want the text to be reversed?

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#3

I need, that when i use find, it will return position of the last match.

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#4

There’s a lot of information missing here. By last result do you mean the last char in a string, or the last string in an array?

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#5

string:find() finds a string within a string, for example

local string_here = "This is cool"

if string_here:find("Cool") then
print("Cool Found")
end

You can’t exactly find it “from end to start”

#6

So i cant get position of the last match.

#7

You want to return the last word in a string? or the position of that word?

#8

I mean the same as string.find does, but not from start, but from end.

#9

Nope,
when I do string.find(“123”) it will retur start and end of 1st 123 in string, but i need to get pos of last.

#10

You could create a variable and make it a reverse of the string, then use the find method in reverse so looking for 123 would be 321 or make a custom find method that flips it for you.

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#11

Ohhh so for example, you mean:

You have a string:
string = “Blue Red Red Blue”

And you want to get the last word “Blue”? (“Blue Red Red Blue”)

I’m sorry if this isn’t what you’re looking for, i’m having a hard time understanding.

#12

Yes, exactly :smile:…

#13

Using @InternallyAmplified’s example, you can use string.split to get the last word.

local String = "Blue Red Red Blue"

local Words = string.split(String," ")

local LastWord = Words[#Words]

print(LastWord)
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#14

No, i dont want last blue, but last word, that i am finding, for example, if i am finding blue “blue red blue red”

#15

Further adding to @Proxus’s Example, once you have lastword, you can iterate through them and pick out the position (in the newly made array)

local String = "Blue Red Red Blue"

function FindLastWordPosInArray(String, TargetWord)

local Words = string.split(String," ")

local lastwordpos = 0

local LastWord = Words[#Words]

for i, v in pairs(Words) do
if v == TargetWord then
lastwordpos = i
end
end
end
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#16

That won’t work, you need to change string to v.

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#17

But idk if it will be splited by " ", in this case, i see @kamsdogs solution as best.

#18

Is it possible to make it so the words are split by a " ", Can you show us your code so we can optimize it to do that?

#19

I need to make it universal, bec I am executing it on users input

#20

What exactly are you trying to achieve?