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Open Source Chemistry Library
/*
* Copyright (c) 1997 - 2016
* Actelion Pharmaceuticals Ltd.
* Gewerbestrasse 16
* CH-4123 Allschwil, Switzerland
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of the the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package com.actelion.research.util;
import java.lang.reflect.Array;
import java.text.DecimalFormat;
import java.util.*;
public class ArrayUtils {
public static boolean equals(int [] a, int [] b){
boolean eq = true;
if(a==null && b==null){
return true;
} else if(a==null){
return false;
} else if(b==null){
return false;
}
if(a.length!=b.length){
return false;
}
for (int i = 0; i < a.length; i++) {
if(a[i]!=b[i]){
eq=false;
break;
}
}
return eq;
}
/**
* Resize an array
*/
public final static Object resize(Object a, int newSize) {
Class cl = a.getClass();
if (!cl.isArray()) return null;
int size = Array.getLength(a);
Class componentType = a.getClass().getComponentType();
Object newArray = Array.newInstance(componentType, newSize);
System.arraycopy(a, 0, newArray, 0, Math.min(size, newSize));
return newArray;
}
/**
* Resize an array of Object
*/
public final static double[] cut(double a[], int off, int len) {
double[] res = new double[a.length-len];
for(int i=0; i list) {
int[] res = new int[list.size()];
int index = 0;
Iterator iter = list.iterator();
while(iter.hasNext()) {
Integer i = (Integer) iter.next();
res[index++] = i.intValue();
}
return res;
}
public final static List toList(T [] arr) {
List li = new ArrayList(arr.length);
for (T t : arr) {
li.add(t);
}
return li;
}
public final static List toList(String [] arr) {
List li = new ArrayList<>(arr.length);
for (String t : arr) {
li.add(t);
}
return li;
}
public final static List toList(int [] arr) {
List li = new ArrayList<>(arr.length);
for (int t : arr) {
li.add(t);
}
return li;
}
public final static void toList(int [] arr, List li) {
for (int t : arr) {
li.add(t);
}
}
public final static String[] toStringArray(List list) {
String[] res = new String[list.size()];
int index = 0;
Iterator iter = list.iterator();
while(iter.hasNext()) {
res[index++] = iter.next();
}
return res;
}
public final static byte [] toByteArray(List li) {
byte[] res = new byte[li.size()];
int index = 0;
Iterator iter = li.iterator();
while(iter.hasNext()) {
res[index++] = iter.next();
}
return res;
}
public final static int indexOf(Object[] array, Object obj) {
for (int i = 0; i < array.length; i++) {
if(array[i].equals(obj)) return i;
}
return -1;
}
public final static int indexOf(int[] array, int obj) {
return indexOf(array, obj, 0);
}
public final static int indexOf(int[] array, int obj, int startIndex) {
for (int i = startIndex; i < array.length; i++) {
if(array[i] == obj) return i;
}
return -1;
}
public final static int indexOf(byte[] array, byte obj) {
return indexOf(array, obj, 0);
}
public final static int indexOf(byte[] array, byte obj, int startIndex) {
for (int i = startIndex; i < array.length; i++) {
if(array[i] == obj) return i;
}
return -1;
}
public final static int sum(int[] array) {
int res = 0;
for(int i=0; i0?", ":"") + v[i] ;
}
return res + "]";
}
public final static String toString(byte[] v) {
String res = "[";
for(int i=0; i0?", ":"") + v[i] ;
}
return res + "]";
}
public final static String toString(double[] v) {
String res = "[";
for(int i=0; i0?", ":"") + v[i] ;
}
return res + "]";
}
public final static String toString(float[] v) {
String res = "[";
for(int i=0; i0?", ":"") + v[i] ;
}
return res + "]";
}
public final static String toString(double[] v, DecimalFormat df) {
StringBuilder sb = new StringBuilder();
sb.append("[");
for(int i=0; i0?", ":"") + v[i] ;
}
return res + "]";
}
public final static void shift(int[] v, int n) {
int[] copy = new int[v.length];
for(int i=0; i void shuffle(T [] arr){
Random rnd = new Random();
int cycles = 7;
int size = arr.length;
for (int i = 0; i < cycles; i++) {
for (int j = 0; j < size; j++) {
int dest = rnd.nextInt(size);
if(dest==j){
continue;
}
T v = arr[j];
arr[j] = arr[dest];
arr[dest] = v;
}
}
}
/**
* Copy an array
*/
public final static Object copy(Object a) {
Class cl = a.getClass();
if (!cl.isArray()) return null;
int size = Array.getLength(a);
Class componentType = a.getClass().getComponentType();
Object newArray = Array.newInstance(componentType, size);
System.arraycopy(a, 0, newArray, 0, size);
return newArray;
}
public final static boolean contains(List list, int[] arr) {
for (int[] arr2: list ) {
if(arr.length!=arr2.length) continue;
for (int i = 0; i < arr2.length; i++) if(arr2[i]!=arr[i]) continue;
return true;
}
return false;
}
public static void set(boolean [] a, boolean v){
for (int i = 0; i < a.length; i++) {
a[i]=v;
}
}
public final static boolean isOverlap(int[] a1, int[] a2) {
boolean ov = false;
all:
for (int v1 : a1) {
for (int v2 : a2) {
if(v1==v2){
ov=true;
break all;
}
}
}
return ov;
}
/**
*
* @param s string with single digits '123456789'.
* @return
*/
public static int [] parseSingleDigitString(String s) {
if (s == null)
return null;
int[] arr = new int[s.length()];
for (int i = 0; i < s.length(); i++) {
int c = Integer.parseInt(Character.toString(s.charAt(i)));
arr[i] = c;
}
return arr;
}
}