package processing.data;
import java.io.*;
import java.util.HashMap;
import java.util.Iterator;
import processing.core.PApplet;
/**
* A simple class to use a String as a lookup for an int value.
*
* @webref data:composite
* @see FloatDict
* @see StringDict
*/
public class IntDict {
/** Number of elements in the table */
protected int count;
protected String[] keys;
protected int[] values;
/** Internal implementation for faster lookups */
private HashMap indices = new HashMap();
// /**
// * Create a new object by counting the number of times each unique entry
// * shows up in the specified String array.
// */
// static public IntHash fromTally(String[] list) {
// IntHash outgoing = new IntHash();
// for (String s : list) {
// outgoing.inc(s);
// }
// outgoing.crop();
// return outgoing;
// }
//
//
// static public IntHash fromOrder(String[] list) {
// IntHash outgoing = new IntHash();
// for (int i = 0; i < list.length; i++) {
// outgoing.set(list[i], i);
// }
// return outgoing;
// }
public IntDict() {
count = 0;
keys = new String[10];
values = new int[10];
}
/**
* Create a new lookup with a specific size. This is more efficient than not
* specifying a size. Use it when you know the rough size of the thing you're creating.
*
* @nowebref
*/
public IntDict(int length) {
count = 0;
keys = new String[length];
values = new int[length];
}
/**
* Read a set of entries from a Reader that has each key/value pair on
* a single line, separated by a tab.
*
* @nowebref
*/
public IntDict(BufferedReader reader) {
String[] lines = PApplet.loadStrings(reader);
keys = new String[lines.length];
values = new int[lines.length];
for (int i = 0; i < lines.length; i++) {
String[] pieces = PApplet.split(lines[i], '\t');
if (pieces.length == 2) {
keys[count] = pieces[0];
values[count] = PApplet.parseInt(pieces[1]);
indices.put(pieces[0], count);
count++;
}
}
}
/**
* @nowebref
*/
public IntDict(String[] keys, int[] values) {
if (keys.length != values.length) {
throw new IllegalArgumentException("key and value arrays must be the same length");
}
this.keys = keys;
this.values = values;
count = keys.length;
for (int i = 0; i < count; i++) {
indices.put(keys[i], i);
}
}
/**
* Returns the number of key/value pairs
*
* @webref intdict:method
* @brief Returns the number of key/value pairs
*/
public int size() {
return count;
}
/**
* Remove all entries.
*
* @webref intdict:method
* @brief Remove all entries
*/
public void clear() {
count = 0;
indices = new HashMap();
}
public String key(int index) {
return keys[index];
}
// private void crop() {
// if (count != keys.length) {
// keys = PApplet.subset(keys, 0, count);
// values = PApplet.subset(values, 0, count);
// }
// }
/**
* Return the internal array being used to store the keys. Allocated but
* unused entries will be removed. This array should not be modified.
*
* @webref intdict:method
* @brief Return the internal array being used to store the keys
*/
// public String[] keys() {
// crop();
// return keys;
// }
// public Iterable keys() {
// return new Iterable() {
//
// @Override
// public Iterator iterator() {
// return new Iterator() {
// int index = -1;
//
// public void remove() {
// removeIndex(index);
// }
//
// public String next() {
// return key(++index);
// }
//
// public boolean hasNext() {
// return index+1 < size();
// }
// };
// }
// };
// }
// Use this with 'for' loops
public Iterable keys() {
return new Iterable() {
@Override
public Iterator iterator() {
return keyIterator();
// return new Iterator() {
// int index = -1;
//
// public void remove() {
// removeIndex(index);
// }
//
// public String next() {
// return key(++index);
// }
//
// public boolean hasNext() {
// return index+1 < size();
// }
// };
}
};
}
// Use this to iterate when you want to be able to remove elements along the way
public Iterator keyIterator() {
return new Iterator() {
int index = -1;
public void remove() {
removeIndex(index);
}
public String next() {
return key(++index);
}
public boolean hasNext() {
return index+1 < size();
}
};
}
/**
* Return a copy of the internal keys array. This array can be modified.
*
* @webref intdict:method
* @brief Return a copy of the internal keys array
*/
public String[] keyArray() {
return keyArray(null);
}
public String[] keyArray(String[] outgoing) {
if (outgoing == null || outgoing.length != count) {
outgoing = new String[count];
}
System.arraycopy(keys, 0, outgoing, 0, count);
return outgoing;
}
public int value(int index) {
return values[index];
}
/**
* @webref intdict:method
* @brief Return the internal array being used to store the keys
*/
public Iterable values() {
return new Iterable() {
@Override
public Iterator iterator() {
return valueIterator();
}
};
}
public Iterator valueIterator() {
return new Iterator() {
int index = -1;
public void remove() {
removeIndex(index);
}
public Integer next() {
return value(++index);
}
public boolean hasNext() {
return index+1 < size();
}
};
}
/**
* Create a new array and copy each of the values into it.
*
* @webref intdict:method
* @brief Create a new array and copy each of the values into it
*/
public int[] valueArray() {
return valueArray(null);
}
/**
* Fill an already-allocated array with the values (more efficient than
* creating a new array each time). If 'array' is null, or not the same
* size as the number of values, a new array will be allocated and returned.
*
* @param array values to copy into the array
*/
public int[] valueArray(int[] array) {
if (array == null || array.length != size()) {
array = new int[count];
}
System.arraycopy(values, 0, array, 0, count);
return array;
}
/**
* Return a value for the specified key.
*
* @webref intdict:method
* @brief Return a value for the specified key
*/
public int get(String key) {
int index = index(key);
if (index == -1) return 0;
return values[index];
}
/**
* Create a new key/value pair or change the value of one.
*
* @webref intdict:method
* @brief Create a new key/value pair or change the value of one
*/
public void set(String key, int amount) {
int index = index(key);
if (index == -1) {
create(key, amount);
} else {
values[index] = amount;
}
}
/**
* @webref intdict:method
* @brief Check if a key is a part of the data structure
*/
public boolean hasKey(String key) {
return index(key) != -1;
}
/**
* Increase the value associated with a specific key by 1.
*
* @webref intdict:method
* @brief Increase the value of a specific key value by 1
*/
public void increment(String key) {
add(key, 1);
}
/**
* @webref intdict:method
* @brief Add to a value
*/
public void add(String key, int amount) {
int index = index(key);
if (index == -1) {
create(key, amount);
} else {
values[index] += amount;
}
}
/**
* @webref intdict:method
* @brief Subtract from a value
*/
public void sub(String key, int amount) {
add(key, -amount);
}
/**
* @webref intdict:method
* @brief Multiply a value
*/
public void mult(String key, int amount) {
int index = index(key);
if (index != -1) {
values[index] *= amount;
}
}
/**
* @webref intdict:method
* @brief Divide a value
*/
public void div(String key, int amount) {
int index = index(key);
if (index != -1) {
values[index] /= amount;
}
}
private void checkMinMax(String functionName) {
if (count == 0) {
String msg =
String.format("Cannot use %s() on an empty %s.",
functionName, getClass().getSimpleName());
throw new RuntimeException(msg);
}
}
// return the index of the minimum value
public int minIndex() {
checkMinMax("minIndex");
int index = 0;
int value = values[0];
for (int i = 1; i < count; i++) {
if (values[i] < value) {
index = i;
value = values[i];
}
}
return index;
}
// return the minimum value
public int minValue() {
checkMinMax("minValue");
return values[minIndex()];
}
// return the key for the minimum value
public String minKey() {
checkMinMax("minKey");
return keys[minIndex()];
}
// return the index of the max value
public int maxIndex() {
checkMinMax("maxIndex");
int index = 0;
int value = values[0];
for (int i = 1; i < count; i++) {
if (values[i] > value) {
index = i;
value = values[i];
}
}
return index;
}
// return the maximum value
public int maxValue() {
checkMinMax("maxValue");
return values[maxIndex()];
}
// return the key corresponding to the maximum value
public String maxKey() {
checkMinMax("maxKey");
return keys[maxIndex()];
}
public int index(String what) {
Integer found = indices.get(what);
return (found == null) ? -1 : found.intValue();
}
protected void create(String what, int much) {
if (count == keys.length) {
keys = PApplet.expand(keys);
values = PApplet.expand(values);
}
indices.put(what, new Integer(count));
keys[count] = what;
values[count] = much;
count++;
}
/**
* @webref intdict:method
* @brief Remove a key/value pair
*/
public int remove(String key) {
int index = index(key);
if (index != -1) {
removeIndex(index);
}
return index;
}
public String removeIndex(int index) {
if (index < 0 || index >= count) {
throw new ArrayIndexOutOfBoundsException(index);
}
//System.out.println("index is " + which + " and " + keys[which]);
String key = keys[index];
indices.remove(keys[index]);
for (int i = index; i < count-1; i++) {
keys[i] = keys[i+1];
values[i] = values[i+1];
indices.put(keys[i], i);
}
count--;
keys[count] = null;
values[count] = 0;
return key;
}
public void swap(int a, int b) {
String tkey = keys[a];
int tvalue = values[a];
keys[a] = keys[b];
values[a] = values[b];
keys[b] = tkey;
values[b] = tvalue;
indices.put(keys[a], new Integer(a));
indices.put(keys[b], new Integer(b));
}
/**
* Sort the keys alphabetically (ignoring case). Uses the value as a
* tie-breaker (only really possible with a key that has a case change).
*
* @webref intdict:method
* @brief Sort the keys alphabetically
*/
public void sortKeys() {
sortImpl(true, false);
}
/**
* Sort the keys alphabetically in reverse (ignoring case). Uses the value as a
* tie-breaker (only really possible with a key that has a case change).
*
* @webref intdict:method
* @brief Sort the keys alphabetially in reverse
*/
public void sortKeysReverse() {
sortImpl(true, true);
}
/**
> cd467dc12a42d588638aaab06746bebdfb333cc4
* @webref intdict:method
* @brief Sort by values in ascending order
*/
public void sortValues() {
sortImpl(false, false);
}
/**
* Sort by values in descending order. The largest value will be at [0].
*
* @webref intdict:method
* @brief Sort by values in descending order
*/
public void sortValuesReverse() {
sortImpl(false, true);
}
protected void sortImpl(final boolean useKeys, final boolean reverse) {
Sort s = new Sort() {
@Override
public int size() {
return count;
}
@Override
public float compare(int a, int b) {
int diff = 0;
if (useKeys) {
diff = keys[a].compareToIgnoreCase(keys[b]);
if (diff == 0) {
return values[a] - values[b];
}
} else { // sort values
diff = values[a] - values[b];
if (diff == 0) {
diff = keys[a].compareToIgnoreCase(keys[b]);
}
}
return reverse ? -diff : diff;
}
@Override
public void swap(int a, int b) {
IntDict.this.swap(a, b);
}
};
s.run();
}
/**
* Sum all of the values in this dictionary, then return a new FloatDict of
* each key, divided by the total sum. The total for all values will be ~1.0.
* @return a Dict with the original keys, mapped to their pct of the total
*/
public FloatDict getPercent() {
double sum = 0;
for (int value : valueArray()) {
sum += value;
}
FloatDict outgoing = new FloatDict();
for (int i = 0; i < size(); i++) {
double percent = value(i) / sum;
outgoing.set(key(i), (float) percent);
}
return outgoing;
}
/** Returns a duplicate copy of this object. */
public IntDict copy() {
IntDict outgoing = new IntDict(count);
System.arraycopy(keys, 0, outgoing.keys, 0, count);
System.arraycopy(values, 0, outgoing.values, 0, count);
for (int i = 0; i < count; i++) {
outgoing.indices.put(keys[i], i);
}
outgoing.count = count;
return outgoing;
}
/**
* Write tab-delimited entries out to
* @param writer
*/
public void write(PrintWriter writer) {
for (int i = 0; i < count; i++) {
writer.println(keys[i] + "\t" + values[i]);
}
writer.flush();
}
public void print() {
for (int i = 0; i < size(); i++) {
System.out.println(keys[i] + " = " + values[i]);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(getClass().getSimpleName() + " size=" + size() + " { ");
for (int i = 0; i < size(); i++) {
if (i != 0) {
sb.append(", ");
}
sb.append("\"" + keys[i] + "\": " + values[i]);
}
sb.append(" }");
return sb.toString();
}
}