FFR Skill Rank System

[21992]

Originally Posted by Doug31

Okay, well, I've created a new and highly improved version of my program although it still fails to take many things into account as mentioned previously. But I think this would probably get about 98% of people into their correct divisions if we could determine numbers to be the cutoff of each version.

The program:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class SkillTestV2 {
public static void main(String[] args) {
new SkillTestV2().start();
}
public void start() {
List<Score> theList = new ArrayList<Score>();
Scanner console = new Scanner(System.in);
while (console.hasNextLine()) {
String line = console.nextLine();
if (line.startsWith("Average Rank:")) {
break;
}
Scanner s = new Scanner(line);
if (!s.hasNext()) {
continue;
}
s.next();
if (!s.hasNextInt()) {
continue;
}
int difficulty = s.nextInt();
String current = "";
if (s.hasNext()) {
current = s.next();
}
String songname = "";
while (s.hasNext()) {
songname += current + " ";
current = s.next();
if ((1 == current.length() || current.length() > 6) && (current.endsWith("0*") || current.endsWith("5*") ||current.endsWith("0") || current.endsWith("5"))) {
break;
}
}
if (!current.endsWith("*")) {
continue;
}
int perfects = s.nextInt();
int goods = s.nextInt();
int averages = s.nextInt();
int misses = s.nextInt();
int boos = s.nextInt();
double val = goods + 1.8*averages + 20.0/275*boos;
theList.add(new Score(songname, difficulty, (int) val));
}
// iterate over the list and get the best scores
Score[] best = new Score[10];
int[] weights = {10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
int[] goods = {2, 5, 10, 15, 20, 25, 30, 35, 40, 50, 75};
for (int i = 0; i < 10; ++i) {
best[i] = new Score("You lose", 1, 9999); //really bad score
for (Score s : theList) {
if (s.difficulty > best[i].difficulty && s.goods <= goods[i]) {
best[i] = s;
}
}
theList.remove(theList.indexOf(best[i]));
}
int total = 0;
for (int i = 0; i < 10; ++i) {
System.out.println(best[i]);
total += weights[i] * best[i].difficulty;
}
System.out.println("Total score= " + total);

}

public class Score {
public String songName;
public int difficulty;
public int goods;

public Score(String songName, int difficulty, int goods) {
this.songName = songName;
this.goods = goods;
this.difficulty = difficulty;
}

public String toString() {
return (songName + " (" + difficulty + ") " + goods + " goods.");
}
}
}

Output with my level ranks:
0 (piano version) (66) 1 goods.
K8107 (65) 4 goods.
For FFR (67) 8 goods.
Gynandromorph (66) 15 goods.
Starwolf (72) 20 goods.
Romance in the Club feat. Liquido (70) 18 goods.
Undiscovered Colors (70) 26 goods.
Midnight Dragon (69) 19 goods.
Summer Time Perfume (69) 37 goods.
Caprice (73) 50 goods.
Total score= 3723

Very simple to use and now uses a player's 10 best scores. Just click run, copy and past your level ranks (use select all) into it, and it produces the output.

I'm quite the noob when it comes to programming. Does this calculate average rank of songs played?

[Doug31]

Best 2 or fewer * 10 +
Best 5 or fewer * 9 +
Best 10 or fewer * 8 +
Best 15 or fewer * 7 +
Best 20 or fewer * 6 +
Best 25 or fewer * 5 +
Best 30 or fewer * 4 +
Best 40 or fewer * 3 +
Best 50 or fewer * 2 +
Best 75 or fewer
And each must be a unique song, and I can easily make it maximized so that you get the highest possible score it can give you with forcing each to be a unique song.

[popsicle_3000]

ffr, where we need ranks, stats, etc... for everything

[Guest15937]

What skill range is supposed to represent each division? It gave me 2,686 (I'm mid-high D2)

[rushyrulz]

I think I'm probably doing something wrong by trying to run this program in command prompt with jdk :S

[arcnmx]

Originally Posted by rushyrulz

I think I'm probably doing something wrong by trying to run this program in command prompt with jdk :S

Save file as SkillTestV2.java
javac SkillTestV2.java
java -cp . SkillTestV2

Einstein-Rosen Bridge (81) 0 goods.
Buzzards (73) 4 goods.
Hardkore Atomic (84) 10 goods.
Integraation (82) 14 goods.
Ultrasounds! (83) 19 goods.
Sleepmix Strikes Back (83) 25 goods.
Xanthystrauma (88) 29 goods.
44 Edit (82) 18 goods.
My Half (86) 36 goods.
mutant corecore (81) 15 goods.
Total score= 4477

Wow that Buzzards I want that gone

[rushyrulz]

I have been doing that, but where do I paste my ranks

[arcnmx]

Oh, into the prompt. On Windows it's right-click -> paste or something?

[rushyrulz]

Yep that did it thanks

The Bird's Poisoned Bathwater (79) 1 goods.
44 Edit (82) 4 goods.
A Kidney Stone (84) 9 goods.
Rock Rock Rock (t+pazolite Remix) (85) 12 goods.
RAN (85) 13 goods.
Music (For Kirby) (87) 23 goods.
Vortex (88) 26 goods.
grind2 (89) 35 goods.
DeVouR (88) 39 goods.
Husigi Usagi Milk Tei (94) 47 goods.
Total score= 4629

EDIT: edited

[arcnmx]

Originally Posted by rushyrulz

A Kidney Stone (t+pazolite Remix) (85)

wat

EDIT: Hijacking this post to give some thoughts, since this isn't a doug-skill-thing-support-thread.

Weighted best scores aren't the worst way to to judge people. It's inherently flawed as long as combo scoring exists and wouldn't actually work as an actual ranking system since it ignores everything but your best 10 scores. However, it probably would give a nice rough indicator for things like tournament placement purposes. Not for ranking though, it's too transparent and one-dimensional.

Originally Posted by EzExZeRo7497

Of course, that's only if you use difficulties as a factor to indicate skill, which I really don't recommend to begin with.

I wouldn't be against simply using song difficulties as a major factor in ranking, even if it discards details such as skillsets. They're unimportant in the bigger picture as long as the system rewards things like consistency more than anomalistic scores.