19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage com.android.internal.util; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.lang.reflect.Array; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// XXX these should be changed to reflect the actual memory allocator we use. 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// it looks like right now objects want to be powers of 2 minus 8 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// and the array size eats another 4 bytes 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * ArrayUtils contains some methods that you can call to find out 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the most efficient increments by which to grow arrays. 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ArrayUtils 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static Object[] EMPTY = new Object[0]; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int CACHE_SIZE = 73; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static Object[] sCache = new Object[CACHE_SIZE]; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayUtils() { /* cannot be instantiated */ } 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealByteArraySize(int need) { 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 4; i < 32; i++) 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (need <= (1 << i) - 12) 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (1 << i) - 12; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return need; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealBooleanArraySize(int need) { 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need); 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealShortArraySize(int need) { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 2) / 2; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealCharArraySize(int need) { 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 2) / 2; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealIntArraySize(int need) { 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 4) / 4; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealFloatArraySize(int need) { 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 4) / 4; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealObjectArraySize(int need) { 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 4) / 4; 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int idealLongArraySize(int need) { 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return idealByteArraySize(need * 8) / 8; 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Checks if the beginnings of two byte arrays are equal. 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param array1 the first byte array 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param array2 the second byte array 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param length the number of bytes to check 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if they're equal, false otherwise 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean equals(byte[] array1, byte[] array2, int length) { 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (array1 == array2) { 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (array1 == null || array2 == null || array1.length < length || array2.length < length) { 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < length; i++) { 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (array1[i] != array2[i]) { 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns an empty array of the specified type. The intent is that 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * it will return the same empty array every time to avoid reallocation, 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * although this is not guaranteed. 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static <T> T[] emptyArray(Class<T> kind) { 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (kind == Object.class) { 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (T[]) EMPTY; 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bucket = ((System.identityHashCode(kind) / 8) & 0x7FFFFFFF) % CACHE_SIZE; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Object cache = sCache[bucket]; 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (cache == null || cache.getClass().getComponentType() != kind) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cache = Array.newInstance(kind, 0); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sCache[bucket] = cache; 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Log.e("cache", "new empty " + kind.getName() + " at " + bucket); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (T[]) cache; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Checks that value is present as at least one of the elements of the array. 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param array the array to check in 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param value the value to check for 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the value is present in the array 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static <T> boolean contains(T[] array, T value) { 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (T element : array) { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (element == null) { 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (value == null) return true; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (value != null && element.equals(value)) return true; 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 135630a1712168f402653039e368259cb9480454fa8Jeff Sharkey 136630a1712168f402653039e368259cb9480454fa8Jeff Sharkey public static boolean contains(int[] array, int value) { 137630a1712168f402653039e368259cb9480454fa8Jeff Sharkey for (int element : array) { 138630a1712168f402653039e368259cb9480454fa8Jeff Sharkey if (element == value) { 139630a1712168f402653039e368259cb9480454fa8Jeff Sharkey return true; 140630a1712168f402653039e368259cb9480454fa8Jeff Sharkey } 141630a1712168f402653039e368259cb9480454fa8Jeff Sharkey } 142630a1712168f402653039e368259cb9480454fa8Jeff Sharkey return false; 143630a1712168f402653039e368259cb9480454fa8Jeff Sharkey } 14496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown 14563abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey public static long total(long[] array) { 14663abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey long total = 0; 14763abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey for (long value : array) { 14863abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey total += value; 14963abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey } 15063abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey return total; 15163abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey } 15263abc37356728c0575d6a62a203102ae6d97953bJeff Sharkey 15396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown /** 15496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * Appends an element to a copy of the array and returns the copy. 15596e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @param array The original array, or null to represent an empty array. 15696e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @param element The element to add. 15796e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @return A new array that contains all of the elements of the original array 15896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * with the specified element added at the end. 15996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown */ 16096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown @SuppressWarnings("unchecked") 16196e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown public static <T> T[] appendElement(Class<T> kind, T[] array, T element) { 16296e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown final T[] result; 16396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown final int end; 16496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown if (array != null) { 16596e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown end = array.length; 16696e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown result = (T[])Array.newInstance(kind, end + 1); 16796e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown System.arraycopy(array, 0, result, 0, end); 16896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } else { 16996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown end = 0; 17096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown result = (T[])Array.newInstance(kind, 1); 17196e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 17296e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown result[end] = element; 17396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown return result; 17496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 17596e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown 17696e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown /** 17796e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * Removes an element from a copy of the array and returns the copy. 17896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * If the element is not present, then the original array is returned unmodified. 17996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @param array The original array, or null to represent an empty array. 18096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @param element The element to remove. 18196e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * @return A new array that contains all of the elements of the original array 18296e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * except the first copy of the specified element removed. If the specified element 18396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * was not present, then returns the original array. Returns null if the result 18496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * would be an empty array. 18596e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown */ 18696e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown @SuppressWarnings("unchecked") 18796e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown public static <T> T[] removeElement(Class<T> kind, T[] array, T element) { 18896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown if (array != null) { 18996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown final int length = array.length; 19096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown for (int i = 0; i < length; i++) { 19196e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown if (array[i] == element) { 19296e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown if (length == 1) { 19396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown return null; 19496e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 19596e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown T[] result = (T[])Array.newInstance(kind, length - 1); 19696e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown System.arraycopy(array, 0, result, 0, i); 19796e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown System.arraycopy(array, i + 1, result, i, length - i - 1); 19896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown return result; 19996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 20096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 20196e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 20296e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown return array; 20396e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown } 204854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey 205854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey public static int[] appendInt(int[] cur, int val) { 206854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (cur == null) { 207854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return new int[] { val }; 208854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 209854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey final int N = cur.length; 210854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey for (int i = 0; i < N; i++) { 211854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (cur[i] == val) { 212854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return cur; 213854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 214854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 215854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey int[] ret = new int[N + 1]; 216854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey System.arraycopy(cur, 0, ret, 0, N); 217854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey ret[N] = val; 218854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return ret; 219854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 220854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey 221854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey public static int[] removeInt(int[] cur, int val) { 222854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (cur == null) { 223854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return null; 224854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 225854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey final int N = cur.length; 226854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey for (int i = 0; i < N; i++) { 227854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (cur[i] == val) { 228854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey int[] ret = new int[N - 1]; 229854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (i > 0) { 230854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey System.arraycopy(cur, 0, ret, 0, i); 231854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 232854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey if (i < (N - 1)) { 233854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey System.arraycopy(cur, i + 1, ret, i, N - i - 1); 234854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 235854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return ret; 236854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 237854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 238854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey return cur; 239854b2b1670bda1eeb87a14b7ac3d222024f0aad6Jeff Sharkey } 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 241