Java DoubleArrayList.clear方法代码示例

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
public void getNonZeros(IntArrayList indexList, DoubleArrayList valueList) {
		boolean fillIndexList = indexList != null;
		boolean fillValueList = valueList != null;
		if (fillIndexList) 
			indexList.clear(); 
		else {
			System.out.println("Wrong use");
			return;
		}
		if (fillValueList) 
			valueList.clear();
		else {
			System.out.println("Wrong use");
			return;
		}
		int[] index = elements.keys().elements();
		double[] value = elements.values().elements(); 
		indexList.elements(index);
		valueList.elements(value);
//		for (int i = 0; i < index.size(); ++i) {
//			indexList.add(index.get(i));
//			valueList.add(value.get(i));
//		}
		
//		int s = size;
//		for (int i=0; i < s; i++) {
//			double value = getQuick(i);
//			if (value != 0) {
//				if (fillIndexList) indexList.add(i);
//				if (fillValueList) valueList.add(value);
//			}
//		}
	}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills the coordinates and values of cells having non-zero values into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists all have a new size, the number of non-zero values.
<p>
In general, fill order is <i>unspecified</i>.
This implementation fill like: <tt>for (slice = 0..slices-1) for (row = 0..rows-1) for (column = 0..colums-1) do ... </tt>.
However, subclasses are free to us any other order, even an order that may change over time as cell values are changed.
(Of course, result lists indexes are guaranteed to correspond to the same cell).
For an example, see {@link DoubleMatrix2D#getNonZeros(IntArrayList,IntArrayList,DoubleArrayList)}.

@param sliceList the list to be filled with slice indexes, can have any size.
@param rowList the list to be filled with row indexes, can have any size.
@param columnList the list to be filled with column indexes, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void getNonZeros(IntArrayList sliceList, IntArrayList rowList, IntArrayList columnList, DoubleArrayList valueList) {
	sliceList.clear(); 
	rowList.clear(); 
	columnList.clear(); 
	valueList.clear();
	int s = slices;
	int r = rows;
	int c = columns;
	for (int slice=0; slice < s; slice++) {
		for (int row=0; row < r; row++) {
			for (int column=0; column < c; column++) {
				double value = getQuick(slice,row,column);
				if (value != 0) {
					sliceList.add(slice);
					rowList.add(row);
					columnList.add(column);
					valueList.add(value);
				}
			}
		}
	}
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
 * Fills all keys contained in the receiver into the specified list.
 * Fills the list, starting at index 0.
 * After this call returns the specified list has a new size that equals <tt>this.size()</tt>.
 * Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(DoubleProcedure)}.
 * <p>
 * This method can be used to iterate over the keys of the receiver.
 *
 * @param list the list to be filled, can have any size.
 */
public void keys(final DoubleArrayList list) {
	list.clear();
	forEachKey(
		new DoubleProcedure() {
			public boolean apply(double key) {
				list.add(key);
				return true;
			}
		}
	);
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
 * Fills all values contained in the receiver into the specified list.
 * Fills the list, starting at index 0.
 * After this call returns the specified list has a new size that equals <tt>this.size()</tt>.
 * Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(IntProcedure)}.
 * <p>
 * This method can be used to iterate over the values of the receiver.
 *
 * @param list the list to be filled, can have any size.
 */
public void values(final DoubleArrayList list) {
	list.clear();
	forEachKey(
		new IntProcedure() {
			public boolean apply(int key) {
				list.add(get(key));
				return true;
			}
		}
	);
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills all pairs satisfying a given condition into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists both have a new size, the number of pairs satisfying the condition.
Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(DoubleProcedure)}.
<p>
<b>Example:</b>
<br>
<pre>
DoubleIntProcedure condition = new DoubleIntProcedure() { // match even values only
	public boolean apply(double key, int value) { return value%2==0; }
}
keys = (8,7,6), values = (1,2,2) --> keyList = (6,8), valueList = (2,1)</tt>
</pre>

@param condition    the condition to be matched. Takes the current key as first and the current value as second argument.
@param keyList the list to be filled with keys, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void pairsMatching(final DoubleIntProcedure condition, final DoubleArrayList keyList, final IntArrayList valueList) {
	keyList.clear();
	valueList.clear();
	
	forEachPair(
		new DoubleIntProcedure() {
			public boolean apply(double key, int value) {
				if (condition.apply(key,value)) {
					keyList.add(key);
					valueList.add(value);
				}
				return true;
			}
		}
	);
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills all pairs satisfying a given condition into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists both have a new size, the number of pairs satisfying the condition.
Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(IntProcedure)}.
<p>
<b>Example:</b>
<br>
<pre>
IntDoubleProcedure condition = new IntDoubleProcedure() { // match even keys only
	public boolean apply(int key, double value) { return key%2==0; }
}
keys = (8,7,6), values = (1,2,2) --> keyList = (6,8), valueList = (2,1)</tt>
</pre>

@param condition    the condition to be matched. Takes the current key as first and the current value as second argument.
@param keyList the list to be filled with keys, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void pairsMatching(final IntDoubleProcedure condition, final IntArrayList keyList, final DoubleArrayList valueList) {
	keyList.clear();
	valueList.clear();
	
	forEachPair(
		new IntDoubleProcedure() {
			public boolean apply(int key, double value) {
				if (condition.apply(key,value)) {
					keyList.add(key);
					valueList.add(value);
				}
				return true;
			}
		}
	);
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills the coordinates and values of cells having non-zero values into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists all have a new size, the number of non-zero values.
<p>
In general, fill order is <i>unspecified</i>.
This implementation fills like <tt>for (row = 0..rows-1) for (column = 0..columns-1) do ... </tt>.
However, subclasses are free to us any other order, even an order that may change over time as cell values are changed.
(Of course, result lists indexes are guaranteed to correspond to the same cell).
<p>
<b>Example:</b>
<br>
<pre>
2 x 3 matrix:
0, 0, 8
0, 7, 0
-->
rowList    = (0,1)
columnList = (2,1)
valueList  = (8,7)
</pre>
In other words, <tt>get(0,2)==8, get(1,1)==7</tt>.

@param rowList the list to be filled with row indexes, can have any size.
@param columnList the list to be filled with column indexes, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void getNonZeros(IntArrayList rowList, IntArrayList columnList, DoubleArrayList valueList) {
	rowList.clear(); 
	columnList.clear(); 
	valueList.clear();
	int r = rows;
	int c = columns;
	for (int row=0; row < r; row++) {
		for (int column=0; column < c; column++) {
			double value = getQuick(row,column);
			if (value != 0) {
				rowList.add(row);
				columnList.add(column);
				valueList.add(value);
			}
		}
	}
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills all pairs satisfying a given condition into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists both have a new size, the number of pairs satisfying the condition.
Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(IntProcedure)}.
<p>
<b>Example:</b>
<br>
<pre>
IntDoubleProcedure condition = new IntDoubleProcedure() { // match even keys only
	public boolean apply(int key, double value) { return key%2==0; }
}
keys = (8,7,6), values = (1,2,2) --> keyList = (6,8), valueList = (2,1)</tt>
</pre>

@param condition    the condition to be matched. Takes the current key as first and the current value as second argument.
@param keyList the list to be filled with keys, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void pairsMatching(final IntDoubleProcedure condition, final IntArrayList keyList, final DoubleArrayList valueList) {
	keyList.clear();
	valueList.clear();
	
	for (int i = table.length ; i-- > 0 ;) {
		if (state[i]==FULL && condition.apply(table[i],values[i])) {
			keyList.add(table[i]);
			valueList.add(values[i]);
		}
	}
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills all pairs satisfying a given condition into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists both have a new size, the number of pairs satisfying the condition.
Iteration order is guaranteed to be <i>identical</i> to the order used by method {@link #forEachKey(DoubleProcedure)}.
<p>
<b>Example:</b>
<br>
<pre>
DoubleIntProcedure condition = new DoubleIntProcedure() { // match even values only
	public boolean apply(double key, int value) { return value%2==0; }
}
keys = (8,7,6), values = (1,2,2) --> keyList = (6,8), valueList = (2,1)</tt>
</pre>

@param condition    the condition to be matched. Takes the current key as first and the current value as second argument.
@param keyList the list to be filled with keys, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void pairsMatching(final DoubleIntProcedure condition, final DoubleArrayList keyList, final IntArrayList valueList) {
	keyList.clear();
	valueList.clear();
	
	for (int i = table.length ; i-- > 0 ;) {
		if (state[i]==FULL && condition.apply(table[i],values[i])) {
			keyList.add(table[i]);
			valueList.add(values[i]);
		}
	}
}
 

import cern.colt.list.DoubleArrayList; //导入方法依赖的package包/类
/**
Fills the coordinates and values of cells having non-zero values into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists all have a new size, the number of non-zero values.
<p>
In general, fill order is <i>unspecified</i>.
This implementation fills like: <tt>for (index = 0..size()-1)  do ... </tt>.
However, subclasses are free to us any other order, even an order that may change over time as cell values are changed.
(Of course, result lists indexes are guaranteed to correspond to the same cell).
<p>
<b>Example:</b>
<br>
<pre>
0, 0, 8, 0, 7
-->
indexList  = (2,4)
valueList  = (8,7)
</pre>
In other words, <tt>get(2)==8, get(4)==7</tt>.

@param indexList the list to be filled with indexes, can have any size.
@param valueList the list to be filled with values, can have any size.
*/
public void getNonZeros(IntArrayList indexList, DoubleArrayList valueList) {
	boolean fillIndexList = indexList != null;
	boolean fillValueList = valueList != null;
	if (fillIndexList) indexList.clear(); 
	if (fillValueList) valueList.clear();
	int s = size;
	for (int i=0; i < s; i++) {
		double value = getQuick(i);
		if (value != 0) {
			if (fillIndexList) indexList.add(i);
			if (fillValueList) valueList.add(value);
		}
	}
}