@Override
public Step[][] solve(int[] initialValues) {
ArrayList<ArrayList<Step>> allSteps = new ArrayList<ArrayList<Step>>();
ArrayList<Step> currentSteps = new ArrayList<Step>();
allSteps.add(currentSteps);
int numOfValues = initialValues.length;
byte[] values = new byte[numOfValues];
for (int i = 0; i < numOfValues; i++) values[i] = (byte) initialValues[i];
int indexMax = 0;
int indexMin = 0;
currentSteps.add(new BucketMinMaxSet(values.clone(), indexMax, indexMin));
for (int i = 1; i < values.length; i++) {
currentSteps.add(new BucketMinMaxCompare(values.clone(), indexMax, indexMin, i, indexMax));
if (values[i] > values[indexMax]) {
indexMax = i;
currentSteps.add(new BucketMinMaxSet(values.clone(), indexMax, indexMin));
}
currentSteps.add(new BucketMinMaxCompare(values.clone(), indexMax, indexMin, i, indexMin));
if (values[i] < values[indexMin]) {
indexMin = i;
currentSteps.add(new BucketMinMaxSet(values.clone(), indexMax, indexMin));
}
}
/*
* byte min = Byte.MAX_VALUE; byte max = Byte.MIN_VALUE; for (int i = 0;
* i < values.length; i++) { if (values[i] > max) max = values[i]; if
* (values[i] < min) min = values[i]; }
*/
int range = values[indexMax] - values[indexMin] + 1;
int bucketCount = range < 4 ? range : 4;
bucketCount = bucketCount > numOfValues ? numOfValues : bucketCount;
Bucket[] buckets = new Bucket[bucketCount];
// Buckets are Approximate ( fast to compute)
int bucketWidth = range / bucketCount + (range % bucketCount > 0 ? 1 : 0);
for (int i = 0; i < buckets.length; i++) {
buckets[i] =
new Bucket(
0,
0,
values[indexMin] + (i + 1) * bucketWidth - 1,
values[indexMin] + i * bucketWidth);
}
ArrayList<ArrayList<Byte>> bytes = new ArrayList<ArrayList<Byte>>();
for (int i = 0; i < buckets.length; i++) {
bytes.add(new ArrayList<Byte>());
}
// Move to containers.
ArrayList<Step> currentSteps2 = new ArrayList<Step>();
allSteps.add(currentSteps2);
for (int i = 0; i < values.length; i++) {
for (int b = 0; b < buckets.length; b++) {
if (buckets[b].theMaxValue >= values[i] && buckets[b].theMinValue <= values[i]) {
bytes.get(b).add(values[i]);
values[i] = ValueDefinitions.VALUE_UNDEFINED;
// Container generation
Container[] containers = new Container[buckets.length];
for (int n = 0; n < containers.length; n++) {
ArrayList<Byte> blist = bytes.get(n);
byte[] byteArray = new byte[blist.size()];
for (int k = 0; k < byteArray.length; k++) {
byteArray[k] = blist.get(k);
}
containers[n] = new Container(byteArray);
}
currentSteps2.add(
new BucketMoveToContainerStep(values.clone(), i, new Bucket[0], containers));
}
}
}
// Base Bucket Size on Container Size
int start = 0;
for (int i = 0; i < buckets.length; i++) {
buckets[i].theStartIndex = start;
buckets[i].theEndIndex = start + bytes.get(i).size() - 1;
start += bytes.get(i).size();
}
// Move items back.
{
ArrayList<Step> currentSteps3 = new ArrayList<Step>();
allSteps.add(currentSteps3);
int i = 0;
for (int b = 0; b < buckets.length; b++) {
for (int j = 0; j < (buckets[b].theEndIndex - buckets[b].theStartIndex + 1); j++) {
values[i++] = bytes.get(b).get(0);
bytes.get(b).remove(0);
// Container generation
Container[] containers = new Container[buckets.length];
for (int n = 0; n < containers.length; n++) {
ArrayList<Byte> blist = bytes.get(n);
byte[] byteArray = new byte[blist.size()];
for (int k = 0; k < byteArray.length; k++) {
byteArray[k] = blist.get(k);
}
containers[n] = new Container(byteArray);
}
currentSteps3.add(
new BucketMoveFromContainerStep(values.clone(), i, new Bucket[0], containers));
}
}
}
// Bubble sort each bucket.
for (int b = 0; b < buckets.length; b++) {
int n = buckets[b].theEndIndex + 1;
int zero = buckets[b].theStartIndex;
for (int pass = 1; pass < n; pass++) {
ArrayList<Step> currentSteps4 = new ArrayList<Step>();
boolean swap = false;
for (int i = zero; i < n - pass; i++) {
currentSteps4.add(new BucketBubbleCompareStep(buckets, values.clone(), i, i + 1));
if (values[i] > values[i + 1]) {
byte temp = values[i];
values[i] = values[i + 1];
values[i + 1] = temp;
swap = true;
currentSteps4.add(new BucketBubbleSwapStep(buckets, values.clone(), i, i + 1));
}
}
if (currentSteps4.size() > 0) allSteps.add(currentSteps4);
if (!swap) break;
}
}
// move values to buckets. // harris' edits (probably wrong) for (int
// b = 0; b < buckets.length; b++) { for (int pass =
// buckets[b].theStartIndex; pass <= buckets[b].theEndIndex; pass++) {
// ArrayList<Step> currentSteps = new ArrayList<Step>(); boolean swap =
// false; for (int i = 0; i < buckets[b].theEndIndex - pass; i++) {
// currentSteps.add(new BucketBubbleCompareStep(buckets.clone(),
// buckets[b].theValues.clone())); if (buckets[b].theValues[i] >
// buckets[b].theValues[i + 1]) { byte temp = buckets[b].theValues[i];
// buckets[b].theValues[i] = buckets[b].theValues[i + 1];
// buckets[b].theValues[i + 1] = temp; swap = true; currentSteps.add(new
// BucketBubbleSwapStep(buckets.clone(), buckets[b].theValues.clone()));
// } }
// allSteps.add(currentSteps); if (!swap) break; } }
// Buckets are precise:
// for (int i = 0; i < buckets.length; i++) {
// buckets[i] = new Bucket(0, 0, min + i * range / bucketCount
// + (i > 0 ? ((range % bucketCount) > i - 1 ? i : range % bucketCount)
// : 0), min + (i + 1) * range
// / bucketCount + (i + 1 < buckets.length ? ((range % bucketCount) > i
// ? i + 1 : range % bucketCount) : 0)
// - 1);
// }
return Convert.toArray(allSteps);
// byte[] values = new byte[initialValues.length];
// byte[][] buckets = new byte[5][initialValues.length];
// byte[] bucketSize = new byte[5];
// byte temp = 0;
// for (int i = 0; i < values.length; i++) {
// values[i] = (byte) initialValues[i];
// }
// for (int i = 0; i < values.length; i++) {
// if (values[i] >= 0 || values[i] <= 20) {
// buckets[0][bucketSize[0]] = values[i];
// bucketSize[0]++;
// } else if (values[i] >= 21 || values[i] <= 40) {
// buckets[1][bucketSize[1]] = values[i];
// bucketSize[1]++;
// } else if (values[i] >= 41 || values[i] <= 60) {
// buckets[2][bucketSize[2]] = values[i];
// bucketSize[2]++;
// } else if (values[i] >= 61 || values[i] <= 80) {
// buckets[3][bucketSize[3]] = values[i];
// bucketSize[3]++;
// } else if (values[i] >= 81) {
// buckets[4][bucketSize[4]] = values[i];
// bucketSize[4]++;
// }
// }
// for (int i = 0; i < 5; i++) {
// for (int j = 1; j < bucketSize[i]; j++) {
// for (int k = 0; k < bucketSize[i] - j; k++) {
// if (buckets[i][k] > buckets[i][k + 1]) {
// temp = buckets[i][k];
// buckets[i][k] = buckets[i][k + 1];
// buckets[i][k + 1] = temp;
// }
// }
// }
// return null;
// }
}
private void parseDataUpdate() {
System.out.println("DataUpdate");
conv = new Convert();
Object[] obj = (Object[]) conv.toObject(this.data);
this.action.DataUpdate(recvIP, obj);
}
private void parseFileDetails() {
System.out.println("FileDetails");
conv = new Convert();
FileHeader fh = (FileHeader) conv.toObject(this.data);
this.action.FileDetails(recvIP, fh);
}
private void parseAckLock() {
System.out.println("AckLock");
conv = new Convert();
String pathName = (String) conv.toObject(this.data);
this.action.AckLock(recvIP, pathName);
}
private void parseReqFileDetails() {
System.out.println("ReqFileDetails");
conv = new Convert();
String pathName = (String) conv.toObject(this.data);
this.action.ReqFileDetails(recvIP, pathName);
}