Android Question remove a character from a string (Solved)

Colin Evans · Feb 28, 2024

Hi, I'm not getting my head around this problem tried a few ways but with no success, basically, I have a string of numbers 12345678910 which are the players numbers 1 to 10, as a player is removed I want to remove his number from the string, next player is removed so is his number, etc. until there is only one number left, the winner

I'm sure there must be a better way of doing this, is the string method the best, or am I better to create an array, or use maps, I'm just having a mental block, any help is greatly appreciated

mcqueccu · Feb 28, 2024

String (as comma separated), Arrays, List, Maps can all be used.

Don't think too much into it, just pick one and start coding

RichardN · Feb 28, 2024

Works OK until you get into double digits, but as @mcqueccu says there are multiple ways of doing it:

B4X:

    Dim Players, PlayerToRemove, NewPlayers As String

    Players = "123456789"
    PlayerToRemove = "6"
    NewPlayers = Players.Replace(PlayerToRemove,"")

Colin Evans · Feb 28, 2024

mcqueccu thanks, I did and it was simpler than I thought

playersChk = "12345678910" so the following to remove player2, not always 10 players that's where NumPlayers comes in, thanks again just needed a shove ?

B4X:

periods = playersChk
        Log("periods " & periods)
        split1 = periods.SubString2(0,1)
        split2 = periods.SubString2(2,NumPlayers)

Colin Evans · Feb 28, 2024

RichardN said:
Works OK until you get into double digits, but as @mcqueccu says there are multiple ways of doing it:

B4X:

Dim Players, PlayerToRemove, NewPlayers As String Players = "123456789" PlayerToRemove = "6" NewPlayers = Players.Replace(PlayerToRemove,"")

I like your way of doing it better just have to 0 to 9 and it works for 10 players, thanks

mcqueccu · Feb 28, 2024

RichardN said:
Works OK until you get into double digits, but as @mcqueccu says there are multiple ways of doing it:

B4X:

Dim Players, PlayerToRemove, NewPlayers As String Players = "123456789" PlayerToRemove = "6" NewPlayers = Players.Replace(PlayerToRemove,"")

Yes I foresee the double digits with String REPLACE will not work.
That is why i added in the braces (csv format) eg. "1,2,3,4,5,6,7,8,9,10"

RB Smissaert · Feb 28, 2024

Colin Evans said:
Hi, I'm not getting my head around this problem tried a few ways but with no success, basically, I have a string of numbers 12345678910 which are the players numbers 1 to 10, as a player is removed I want to remove his number from the string, next player is removed so is his number, etc. until there is only one number left, the winner

I'm sure there must be a better way of doing this, is the string method the best, or am I better to create an array, or use maps, I'm just having a mental block, any help is greatly appreciated

Going with a list or a map will save a lot of trouble/complexity.
It is simple to concatenate a list or map to a string if needed (eg to display the players).

RBS

emexes · Feb 28, 2024

Colin Evans said:
I like your way of doing it better just have to 0 to 9 and it works for 10 players

Or the Y2K solution of redefining a digit to hexadecimal and having 10 players 123456789A
(bought an extra 60 years eg 97, 98, 99, A0, A1, A2, A3 ... F9) (or 160 years if you were ok to continue to Z9)

Or using letters instead of numbers and having 10 players ABCDEFGHIJ eg Chr(64 + 1) to Chr(64 + 10)
(and potentially up to 26 players)

Android Question remove a character from a string (Solved)

Colin Evans

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mcqueccu

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RichardN

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Colin Evans

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Colin Evans

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RB Smissaert

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emexes

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Android Question remove a character from a string (Solved)

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