/**
* Returns whether the given {@link IntArrayND} equals the given object
*
* @param array The array
* @param object The object
* @return Whether the array equals the object
*/
static boolean equals(IntArrayND array, Object object) {
if (array == object) {
return true;
}
if (object == null) {
return false;
}
if (!(object instanceof IntArrayND)) {
return false;
}
IntArrayND other = (IntArrayND) object;
if (!array.getSize().equals(other.getSize())) {
return false;
}
Stream<MutableIntTuple> coordinates =
Coordinates.coordinates(array.getPreferredIterationOrder(), array.getSize());
Iterable<MutableIntTuple> iterable = () -> coordinates.iterator();
for (IntTuple coordinate : iterable) {
int arrayValue = array.get(coordinate);
int otherValue = other.get(coordinate);
if (arrayValue != otherValue) {
return false;
}
}
return true;
}
/**
* Creates a formatted representation of the given array. After each dimension, a newline
* character will be inserted.
*
* @param array The array
* @param format The format for the array entries
* @return The hash code
*/
public static String toFormattedString(IntArrayND array, String format) {
if (array == null) {
return "null";
}
StringBuilder sb = new StringBuilder();
Iterable<MutableIntTuple> iterable = IntTupleIterables.lexicographicalIterable(array.getSize());
IntTuple previous = null;
for (IntTuple coordinates : iterable) {
if (previous != null) {
int c = Utils.countDifferences(previous, coordinates);
for (int i = 0; i < c - 1; i++) {
sb.append("\n");
}
}
int value = array.get(coordinates);
sb.append(String.format(format + ", ", value));
previous = coordinates;
}
return sb.toString();
}
/**
* Computes the hash code of the given array. This method will return a hash code that solely
* depends on the contents of the given array, regardless of its preferred iteration order.
*
* @param array The array
* @return The hash code
*/
static int hashCode(IntArrayND array) {
if (array == null) {
return 0;
}
return array.stream().parallel().sum();
}
/**
* Returns a default string representation of the given array. Since arrays tend to be large (and
* multidimensional), this string will <b>not</b> contain the <i>contents</i> of the array, but
* only its size.
*
* @param array The array
* @return The string
*/
static String toString(IntArrayND array) {
if (array == null) {
return "null";
}
return array.getClass().getSimpleName() + "[size=" + array.getSize() + "]";
}
/**
* Returns the maximum value in the given array, or <code>Integer.MIN_VALUE</code> if the given
* array has a size of 0.
*
* @param array The array
* @return The maximum value
*/
public static int max(IntArrayND array) {
return array.stream().parallel().reduce(Integer.MIN_VALUE, Math::max);
}
/**
* Returns the minimum value in the given array, or <code>Integer.MAX_VALUE</code> if the given
* array has a size of 0.
*
* @param array The array
* @return The minimum value
*/
public static int min(IntArrayND array) {
return array.stream().parallel().reduce(Integer.MAX_VALUE, Math::min);
}
