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Enable Striped Collation

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Uses stripe widths of 2-5 inclusive with equal chances for each.
If data can be obtained, a later improvement would be to give different weightings to different stripe widths.
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tiera3 2024-10-02 11:27:37 +10:00 • committed by GitHub
parent 9247ea1a6e
commit 82fc636d18
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1 changed files with 42 additions and 3 deletions
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45
Mage/src/main/java/mage/collation/Rotater.java
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@ -15,7 +15,7 @@ import java.util.List;
public class Rotater<T> {
private final List<T> items;
private int position;
private int position, stripeLen = 0, stripeWidth, stripeDepth;
public Rotater(T item) {
this(true, item);
@ -37,10 +37,49 @@ public class Rotater<T> {
}
}
// for striped collation
public Main(int sLen, String... items) {
// should there be an error check?
// assert ( items.size() % sLen ) == 0;
this.stripeLen = sLen;
this.items = Arrays.asList(items);
this.position = RandomUtil.nextInt(this.items.size());
this.stripeWidth= this.nextWidth();
this.stripeDepth= 1+ RandomUtil.nextInt(this.stripeWidth);
}
// choose a stripe width between 2 & 5 inclusive
// ToDo when data available: enable different widths to have different likelihoods
public int nextWidth() {
return 2+ RandomUtil.nextInt(4);
}
public int iterate() {
int i = position;
position++;
position %= items.size();
if( stripeLen >0 ){
if( stripeDepth < stripeWidth ){
++stripeDepth;
position -= 10;
if (position <0 ){
position += items.size();
}
}else{
stripeDepth= 1;
if( (position % stripeLen) >0 ){
position += stripeLen * (stripeWidth-1);
position %= items.size();
}else{
this.stripeWidth= this.nextWidth();
}
position -= 1;
if (position <0 ){
position += items.size();
}
}
}else{
position++;
position %= items.size();
}
return i;
}