[GoldenLion]

Hi, is it possible to randomize the positions of the letters of a word? I mean like let's say you get a word "apple" then it changes the positions of the letters and one time it will look something like "plepa" and other time "eaplp" etc. I want it to be totally random so players could unscramble these words. I don't want to make it like that "apple" is always "eaplp" It needs to be different every time. Is that possible?

[SyS]

PHP код:

   new swap,index,i;
   new str[]="Hello";
   while(str[i]!='\0') 
    { 
        swap=str[i]; 
        index=random(sizeof(str)-1); 
        str[i] = str[index]; 
        str[index]=swap; 
        i++; 
    }
    printf(str); 


[GoldenLion]

Thank you, it works, but sizeof(str) needs to be changed to strlen(str).

[SyS]

Quote:

Originally Posted by GoldenLion Thank you, it works, but sizeof(str) needs to be changed to strlen(str).

Not in this case as I assigned the string leaving the compiler to determining the cell required so we can avoid an overhead of strlen replacing with a constant which is better optmised.

[GoldenLion]

Quote:

Originally Posted by Sreyas Not in this case as I assigned the string leaving the compiler to determining the cell required so we can avoid an overhead of strlen replacing with a constant which is better optmised.

Ah, alright. Well I did that in a command and used the params with that so it gave me an error. :P

[SyS]

Quote:

Originally Posted by GoldenLion Ah, alright. Well I did that in a command and used the params with that so it gave me an error. :P

yeahhh my bad i forgot that it will give error in commonly using compiler (not in modern) as the array size is unknown due as checking is done before calculation.

[SickAttack]

pawn Код:

ScrambleString(string[])
{
    for(new i = 0, j = strlen(string), k = random(j); i < j; i ++, k = random(j))
    {
        i != k && (string[i] ^= string[k], string[k] ^= string[i], string[i] ^= string[k]);
    }
    return string;
}

[admantis]

Quote:

Originally Posted by SickAttack pawn Код: ScrambleString(string[]) {     for(new i = 0, j = strlen(string), k = random(j); i < j; i ++, k = random(j))     {         i != k && (string[i] ^= string[k], string[k] ^= string[i], string[i] ^= string[k]);     }     return string; }

please explain how does it work?

[Konstantinos]

Quote:

Originally Posted by admantis please explain how does it work?

https://en.wikipedia.org/wiki/Fisher...3Yates_shuffle

Quote:

Originally Posted by GoldenLion Is that better than Sreyas' one?

It is the modern and "inside-out" versions and to answer to your question: yes, it is.

[GoldenLion]

Quote:

Originally Posted by Konstantinos https://en.wikipedia.org/wiki/Fisher...3Yates_shuffle It is the modern and "inside-out" versions and to answer to your question: yes, it is.

Thanks.