/*
* Copyright 2014 Takao Nakaguchi
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.trie4j.bv;
import java.io.Serializable;
import java.util.Arrays;
public class LongsRank0OnlySuccinctBitVector
implements Serializable, SuccinctBitVector{
public LongsRank0OnlySuccinctBitVector(){
this(16);
}
public LongsRank0OnlySuccinctBitVector(int initialCapacity){
if(initialCapacity == 0){
this.longs = new long[]{};
this.countCache0 = new int[]{};
} else{
this.longs = new long[longsSize(initialCapacity)];
this.countCache0 = new int[countCache0Size(initialCapacity)];
}
}
public LongsRank0OnlySuccinctBitVector(byte[] bytes, int bitsSize){
this.size = bitsSize;
this.longs = new long[longsSize(bitsSize)];
this.countCache0 = new int[countCache0Size(bitsSize)];
int n = bytes.length;
for(int i = 0; i < n; i++){
int b = bytes[i] & 0xff;
longs[i / 8] |= (long)b << ((7 - (i % 8)) * 8);
byte[] zeroPosInB = BITPOS0[b];
int rest = bitsSize - i * 8;
if(rest < 8){
// 残りより後の0の位置は扱わない
int nz = zeroPosInB.length;
for(int j = 0; j < nz; j++){
if(zeroPosInB[j] >= rest){
zeroPosInB = Arrays.copyOf(zeroPosInB, j);
break;
}
}
}
size0 += zeroPosInB.length;
if((i + 1) % (BITS_IN_COUNTCACHE0 / 8) == 0){
countCache0[i / (BITS_IN_COUNTCACHE0 / 8)] = size0;
}
if(rest < 8) break;
}
countCache0[(size - 1) / BITS_IN_COUNTCACHE0] = size0;
}
public LongsRank0OnlySuccinctBitVector(
long[] longs, int size, int size0,
int[] countCache0) {
this.longs = longs;
this.size = size;
this.size0 = size0;
this.countCache0 = countCache0;
}
@Override
public String toString() {
StringBuilder b = new StringBuilder();
int n = Math.min(size, 64);
for(int i = 0; i < n; i++){
long m = 0x8000000000000000L >>> (i % BITS_IN_BLOCK);
long bi = longs[(i / BITS_IN_BLOCK)] & m;
b.append((bi) != 0 ? "1" : "0");
}
return b.toString();
}
public long[] getLongs(){
return longs;
}
public int[] getCountCache0(){
return countCache0;
}
@Override
public boolean get(int pos) {
return isOne(pos);
}
public boolean isZero(int pos){
return (longs[pos / BITS_IN_BLOCK] & (0x8000000000000000L >>> pos % BITS_IN_BLOCK)) == 0;
}
public boolean isOne(int pos){
return (longs[pos / BITS_IN_BLOCK] & (0x8000000000000000L >>> pos % BITS_IN_BLOCK)) != 0;
}
public int size(){
return size;
}
public int getSize0() {
return size0;
}
public void trimToSize(){
longs = Arrays.copyOf(longs, longsSize(size));
countCache0 = Arrays.copyOf(countCache0, countCache0Size(size));
}
public void append1(){
int longsi = size / BITS_IN_BLOCK;
int countCachei = size / BITS_IN_COUNTCACHE0;
if(longsi >= longs.length){
extendLongsAndCountCache0();
}
if(size % BITS_IN_COUNTCACHE0 == 0 && countCachei > 0){
countCache0[countCachei] = countCache0[countCachei - 1];
}
longs[longsi] |= 0x8000000000000000L >>> (size % BITS_IN_BLOCK);
size++;
}
public void append0(){
int longsi = size / BITS_IN_BLOCK;
int countCachei = size / BITS_IN_COUNTCACHE0;
if(longsi >= longs.length){
extendLongsAndCountCache0();
}
if(size % BITS_IN_COUNTCACHE0 == 0 && countCachei > 0){
countCache0[countCachei] = countCache0[countCachei - 1];
}
countCache0[countCachei]++;
size0++;
size++;
}
public void append(boolean bit){
if(bit) append1();
else append0();
}
public int rank0(int pos){
int cn = pos / BITS_IN_COUNTCACHE0;
if((pos + 1) % BITS_IN_COUNTCACHE0 == 0) return countCache0[cn];
int ret = (cn > 0) ? countCache0[cn - 1] : 0;
int n = pos / BITS_IN_BLOCK;
for(int i = (cn * BITS_IN_COUNTCACHE0 / BITS_IN_BLOCK); i < n; i++){
ret += Long.bitCount(~longs[i]);
}
return ret + Long.bitCount(~longs[n] & (0x8000000000000000L >> (pos % BITS_IN_BLOCK)));
}
public int rank1(int pos){
int cn = pos / BITS_IN_COUNTCACHE0;
if((pos + 1) % BITS_IN_COUNTCACHE0 == 0) return (cn + 1) * BITS_IN_COUNTCACHE0 - countCache0[cn];
int ret = (cn > 0) ? cn * BITS_IN_COUNTCACHE0 - countCache0[cn - 1] : 0;
int n = pos / BITS_IN_BLOCK;
for(int i = (cn * BITS_IN_COUNTCACHE0 / BITS_IN_BLOCK); i < n; i++){
ret += Long.bitCount(longs[i]);
}
return ret + Long.bitCount(longs[n] & (0x8000000000000000L >> (pos % BITS_IN_BLOCK)));
}
public int rank(int pos, boolean b){
if(b) return rank1(pos);
else return rank0(pos);
}
@Override
public int select0(int count) {
for(int i = 0; i < longs.length; i++){
if(i * BITS_IN_BLOCK >= size) return -1;
long v = longs[i];
int c = BITS_IN_BLOCK - Long.bitCount(v);
if(count <= c){
for(int j = 0; j < BITS_IN_BLOCK; j++){
if(i * BITS_IN_BLOCK + j >= size) return -1;
if((v & 0x8000000000000000L) != 1){
count--;
if(count == 0){
return i * BITS_IN_BLOCK + j;
}
}
v <<= 1;
}
return -1;
}
count -= c;
}
return -1;
}
@Override
public int select1(int count) {
for(int i = 0; i < longs.length; i++){
if(i * BITS_IN_BLOCK >= size) return -1;
long v = longs[i];
int c = Long.bitCount(v);
if(count <= c){
for(int j = 0; j < BITS_IN_BLOCK; j++){
if(i * BITS_IN_BLOCK + j >= size) return -1;
if((v & 0x8000000000000000L) != 0){
count--;
if(count == 0){
return i * BITS_IN_BLOCK + j;
}
}
v <<= 1;
}
return -1;
}
count -= c;
}
return -1;
}
public int select(int count, boolean b){
if(b) return select1(count);
else return select0(count);
}
public int next0(int pos){
if(pos >= size) return -1;
int longsi = pos / BITS_IN_BLOCK;
int s = pos % BITS_IN_BLOCK;
for(; longsi < longs.length; longsi++){
long v = longs[longsi];
for(int i = s; i < BITS_IN_BLOCK; i++){
int p = longsi * BITS_IN_BLOCK + i;
if(p >= size) return -1;
if((v & (0x8000000000000000L >>> i)) == 0){
return p;
}
}
s = 0;
}
return -1;
}
private void extendLongsAndCountCache0(){
int longsSize = (int)(longs.length * 1.2) + 1;
longs = Arrays.copyOf(longs, longsSize);
int cacheSize = longsSize * BITS_IN_BLOCK / BITS_IN_COUNTCACHE0 + 1;
countCache0 = Arrays.copyOf(countCache0, cacheSize);
}
private static int longsSize(int bitSize){
return (bitSize - 1) / BITS_IN_BLOCK + 1;
}
private static int countCache0Size(int bitSize){
return (bitSize - 1) / BITS_IN_COUNTCACHE0 + 1;
}
static final int BITS_IN_BLOCK = 64;
static final int BITS_IN_COUNTCACHE0 = 1 * 64;
private long[] longs;
private int size;
private int size0;
private int[] countCache0;
private static final byte[][] BITPOS0 = {
{0, 1, 2, 3, 4, 5, 6, 7, }, // 0(0)
{0, 1, 2, 3, 4, 5, 6, }, // 1(1)
{0, 1, 2, 3, 4, 5, 7, }, // 2(2)
{0, 1, 2, 3, 4, 5, }, // 3(3)
{0, 1, 2, 3, 4, 6, 7, }, // 4(4)
{0, 1, 2, 3, 4, 6, }, // 5(5)
{0, 1, 2, 3, 4, 7, }, // 6(6)
{0, 1, 2, 3, 4, }, // 7(7)
{0, 1, 2, 3, 5, 6, 7, }, // 8(8)
{0, 1, 2, 3, 5, 6, }, // 9(9)
{0, 1, 2, 3, 5, 7, }, // 10(a)
{0, 1, 2, 3, 5, }, // 11(b)
{0, 1, 2, 3, 6, 7, }, // 12(c)
{0, 1, 2, 3, 6, }, // 13(d)
{0, 1, 2, 3, 7, }, // 14(e)
{0, 1, 2, 3, }, // 15(f)
{0, 1, 2, 4, 5, 6, 7, }, // 16(10)
{0, 1, 2, 4, 5, 6, }, // 17(11)
{0, 1, 2, 4, 5, 7, }, // 18(12)
{0, 1, 2, 4, 5, }, // 19(13)
{0, 1, 2, 4, 6, 7, }, // 20(14)
{0, 1, 2, 4, 6, }, // 21(15)
{0, 1, 2, 4, 7, }, // 22(16)
{0, 1, 2, 4, }, // 23(17)
{0, 1, 2, 5, 6, 7, }, // 24(18)
{0, 1, 2, 5, 6, }, // 25(19)
{0, 1, 2, 5, 7, }, // 26(1a)
{0, 1, 2, 5, }, // 27(1b)
{0, 1, 2, 6, 7, }, // 28(1c)
{0, 1, 2, 6, }, // 29(1d)
{0, 1, 2, 7, }, // 30(1e)
{0, 1, 2, }, // 31(1f)
{0, 1, 3, 4, 5, 6, 7, }, // 32(20)
{0, 1, 3, 4, 5, 6, }, // 33(21)
{0, 1, 3, 4, 5, 7, }, // 34(22)
{0, 1, 3, 4, 5, }, // 35(23)
{0, 1, 3, 4, 6, 7, }, // 36(24)
{0, 1, 3, 4, 6, }, // 37(25)
{0, 1, 3, 4, 7, }, // 38(26)
{0, 1, 3, 4, }, // 39(27)
{0, 1, 3, 5, 6, 7, }, // 40(28)
{0, 1, 3, 5, 6, }, // 41(29)
{0, 1, 3, 5, 7, }, // 42(2a)
{0, 1, 3, 5, }, // 43(2b)
{0, 1, 3, 6, 7, }, // 44(2c)
{0, 1, 3, 6, }, // 45(2d)
{0, 1, 3, 7, }, // 46(2e)
{0, 1, 3, }, // 47(2f)
{0, 1, 4, 5, 6, 7, }, // 48(30)
{0, 1, 4, 5, 6, }, // 49(31)
{0, 1, 4, 5, 7, }, // 50(32)
{0, 1, 4, 5, }, // 51(33)
{0, 1, 4, 6, 7, }, // 52(34)
{0, 1, 4, 6, }, // 53(35)
{0, 1, 4, 7, }, // 54(36)
{0, 1, 4, }, // 55(37)
{0, 1, 5, 6, 7, }, // 56(38)
{0, 1, 5, 6, }, // 57(39)
{0, 1, 5, 7, }, // 58(3a)
{0, 1, 5, }, // 59(3b)
{0, 1, 6, 7, }, // 60(3c)
{0, 1, 6, }, // 61(3d)
{0, 1, 7, }, // 62(3e)
{0, 1, }, // 63(3f)
{0, 2, 3, 4, 5, 6, 7, }, // 64(40)
{0, 2, 3, 4, 5, 6, }, // 65(41)
{0, 2, 3, 4, 5, 7, }, // 66(42)
{0, 2, 3, 4, 5, }, // 67(43)
{0, 2, 3, 4, 6, 7, }, // 68(44)
{0, 2, 3, 4, 6, }, // 69(45)
{0, 2, 3, 4, 7, }, // 70(46)
{0, 2, 3, 4, }, // 71(47)
{0, 2, 3, 5, 6, 7, }, // 72(48)
{0, 2, 3, 5, 6, }, // 73(49)
{0, 2, 3, 5, 7, }, // 74(4a)
{0, 2, 3, 5, }, // 75(4b)
{0, 2, 3, 6, 7, }, // 76(4c)
{0, 2, 3, 6, }, // 77(4d)
{0, 2, 3, 7, }, // 78(4e)
{0, 2, 3, }, // 79(4f)
{0, 2, 4, 5, 6, 7, }, // 80(50)
{0, 2, 4, 5, 6, }, // 81(51)
{0, 2, 4, 5, 7, }, // 82(52)
{0, 2, 4, 5, }, // 83(53)
{0, 2, 4, 6, 7, }, // 84(54)
{0, 2, 4, 6, }, // 85(55)
{0, 2, 4, 7, }, // 86(56)
{0, 2, 4, }, // 87(57)
{0, 2, 5, 6, 7, }, // 88(58)
{0, 2, 5, 6, }, // 89(59)
{0, 2, 5, 7, }, // 90(5a)
{0, 2, 5, }, // 91(5b)
{0, 2, 6, 7, }, // 92(5c)
{0, 2, 6, }, // 93(5d)
{0, 2, 7, }, // 94(5e)
{0, 2, }, // 95(5f)
{0, 3, 4, 5, 6, 7, }, // 96(60)
{0, 3, 4, 5, 6, }, // 97(61)
{0, 3, 4, 5, 7, }, // 98(62)
{0, 3, 4, 5, }, // 99(63)
{0, 3, 4, 6, 7, }, // 100(64)
{0, 3, 4, 6, }, // 101(65)
{0, 3, 4, 7, }, // 102(66)
{0, 3, 4, }, // 103(67)
{0, 3, 5, 6, 7, }, // 104(68)
{0, 3, 5, 6, }, // 105(69)
{0, 3, 5, 7, }, // 106(6a)
{0, 3, 5, }, // 107(6b)
{0, 3, 6, 7, }, // 108(6c)
{0, 3, 6, }, // 109(6d)
{0, 3, 7, }, // 110(6e)
{0, 3, }, // 111(6f)
{0, 4, 5, 6, 7, }, // 112(70)
{0, 4, 5, 6, }, // 113(71)
{0, 4, 5, 7, }, // 114(72)
{0, 4, 5, }, // 115(73)
{0, 4, 6, 7, }, // 116(74)
{0, 4, 6, }, // 117(75)
{0, 4, 7, }, // 118(76)
{0, 4, }, // 119(77)
{0, 5, 6, 7, }, // 120(78)
{0, 5, 6, }, // 121(79)
{0, 5, 7, }, // 122(7a)
{0, 5, }, // 123(7b)
{0, 6, 7, }, // 124(7c)
{0, 6, }, // 125(7d)
{0, 7, }, // 126(7e)
{0, }, // 127(7f)
{1, 2, 3, 4, 5, 6, 7, }, // 128(80)
{1, 2, 3, 4, 5, 6, }, // 129(81)
{1, 2, 3, 4, 5, 7, }, // 130(82)
{1, 2, 3, 4, 5, }, // 131(83)
{1, 2, 3, 4, 6, 7, }, // 132(84)
{1, 2, 3, 4, 6, }, // 133(85)
{1, 2, 3, 4, 7, }, // 134(86)
{1, 2, 3, 4, }, // 135(87)
{1, 2, 3, 5, 6, 7, }, // 136(88)
{1, 2, 3, 5, 6, }, // 137(89)
{1, 2, 3, 5, 7, }, // 138(8a)
{1, 2, 3, 5, }, // 139(8b)
{1, 2, 3, 6, 7, }, // 140(8c)
{1, 2, 3, 6, }, // 141(8d)
{1, 2, 3, 7, }, // 142(8e)
{1, 2, 3, }, // 143(8f)
{1, 2, 4, 5, 6, 7, }, // 144(90)
{1, 2, 4, 5, 6, }, // 145(91)
{1, 2, 4, 5, 7, }, // 146(92)
{1, 2, 4, 5, }, // 147(93)
{1, 2, 4, 6, 7, }, // 148(94)
{1, 2, 4, 6, }, // 149(95)
{1, 2, 4, 7, }, // 150(96)
{1, 2, 4, }, // 151(97)
{1, 2, 5, 6, 7, }, // 152(98)
{1, 2, 5, 6, }, // 153(99)
{1, 2, 5, 7, }, // 154(9a)
{1, 2, 5, }, // 155(9b)
{1, 2, 6, 7, }, // 156(9c)
{1, 2, 6, }, // 157(9d)
{1, 2, 7, }, // 158(9e)
{1, 2, }, // 159(9f)
{1, 3, 4, 5, 6, 7, }, // 160(a0)
{1, 3, 4, 5, 6, }, // 161(a1)
{1, 3, 4, 5, 7, }, // 162(a2)
{1, 3, 4, 5, }, // 163(a3)
{1, 3, 4, 6, 7, }, // 164(a4)
{1, 3, 4, 6, }, // 165(a5)
{1, 3, 4, 7, }, // 166(a6)
{1, 3, 4, }, // 167(a7)
{1, 3, 5, 6, 7, }, // 168(a8)
{1, 3, 5, 6, }, // 169(a9)
{1, 3, 5, 7, }, // 170(aa)
{1, 3, 5, }, // 171(ab)
{1, 3, 6, 7, }, // 172(ac)
{1, 3, 6, }, // 173(ad)
{1, 3, 7, }, // 174(ae)
{1, 3, }, // 175(af)
{1, 4, 5, 6, 7, }, // 176(b0)
{1, 4, 5, 6, }, // 177(b1)
{1, 4, 5, 7, }, // 178(b2)
{1, 4, 5, }, // 179(b3)
{1, 4, 6, 7, }, // 180(b4)
{1, 4, 6, }, // 181(b5)
{1, 4, 7, }, // 182(b6)
{1, 4, }, // 183(b7)
{1, 5, 6, 7, }, // 184(b8)
{1, 5, 6, }, // 185(b9)
{1, 5, 7, }, // 186(ba)
{1, 5, }, // 187(bb)
{1, 6, 7, }, // 188(bc)
{1, 6, }, // 189(bd)
{1, 7, }, // 190(be)
{1, }, // 191(bf)
{2, 3, 4, 5, 6, 7, }, // 192(c0)
{2, 3, 4, 5, 6, }, // 193(c1)
{2, 3, 4, 5, 7, }, // 194(c2)
{2, 3, 4, 5, }, // 195(c3)
{2, 3, 4, 6, 7, }, // 196(c4)
{2, 3, 4, 6, }, // 197(c5)
{2, 3, 4, 7, }, // 198(c6)
{2, 3, 4, }, // 199(c7)
{2, 3, 5, 6, 7, }, // 200(c8)
{2, 3, 5, 6, }, // 201(c9)
{2, 3, 5, 7, }, // 202(ca)
{2, 3, 5, }, // 203(cb)
{2, 3, 6, 7, }, // 204(cc)
{2, 3, 6, }, // 205(cd)
{2, 3, 7, }, // 206(ce)
{2, 3, }, // 207(cf)
{2, 4, 5, 6, 7, }, // 208(d0)
{2, 4, 5, 6, }, // 209(d1)
{2, 4, 5, 7, }, // 210(d2)
{2, 4, 5, }, // 211(d3)
{2, 4, 6, 7, }, // 212(d4)
{2, 4, 6, }, // 213(d5)
{2, 4, 7, }, // 214(d6)
{2, 4, }, // 215(d7)
{2, 5, 6, 7, }, // 216(d8)
{2, 5, 6, }, // 217(d9)
{2, 5, 7, }, // 218(da)
{2, 5, }, // 219(db)
{2, 6, 7, }, // 220(dc)
{2, 6, }, // 221(dd)
{2, 7, }, // 222(de)
{2, }, // 223(df)
{3, 4, 5, 6, 7, }, // 224(e0)
{3, 4, 5, 6, }, // 225(e1)
{3, 4, 5, 7, }, // 226(e2)
{3, 4, 5, }, // 227(e3)
{3, 4, 6, 7, }, // 228(e4)
{3, 4, 6, }, // 229(e5)
{3, 4, 7, }, // 230(e6)
{3, 4, }, // 231(e7)
{3, 5, 6, 7, }, // 232(e8)
{3, 5, 6, }, // 233(e9)
{3, 5, 7, }, // 234(ea)
{3, 5, }, // 235(eb)
{3, 6, 7, }, // 236(ec)
{3, 6, }, // 237(ed)
{3, 7, }, // 238(ee)
{3, }, // 239(ef)
{4, 5, 6, 7, }, // 240(f0)
{4, 5, 6, }, // 241(f1)
{4, 5, 7, }, // 242(f2)
{4, 5, }, // 243(f3)
{4, 6, 7, }, // 244(f4)
{4, 6, }, // 245(f5)
{4, 7, }, // 246(f6)
{4, }, // 247(f7)
{5, 6, 7, }, // 248(f8)
{5, 6, }, // 249(f9)
{5, 7, }, // 250(fa)
{5, }, // 251(fb)
{6, 7, }, // 252(fc)
{6, }, // 253(fd)
{7, }, // 254(fe)
{}, // 255(ff)
};
private static final long serialVersionUID = -7658605229245494623L;
}