[[XST]O_x]

You can just use a player variable.

pawn Код:

new oldInt[MAX_PLAYERS] = {-1, ...};

stock randomEx(playerid, min, max)
{
    new ints;
    do {
            ints = Randomize(min, max+1);
    }
    while(ints == oldInt[playerid]);
    oldInt[playerid] = ints;
    printf("%d", ints);
    return oldInt[playerid];
}

CMD:ur(playerid, params[])
{
    SendClientMessageEx(playerid, 0xFF0000AA, "Random Number: %d", randomEx(playerid, 0, 100));
    return 1;
}