用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 bi[l ,
插入排序: *X #e
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package org.rut.util.algorithm.support; >KPJ74R
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import org.rut.util.algorithm.SortUtil; O+$70
/** SMFW]I2T/
* @author treeroot 5HN<*u%z
* @since 2006-2-2 m [g}vwS
* @version 1.0 dNobvK
*/ M&FuXG%
public class InsertSort implements SortUtil.Sort{ |gz,Ip{
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/* (non-Javadoc) H^g<`XEgw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C] w< &o
*/ 1sjn_fPz
public void sort(int[] data) { U!5*V9T~J
int temp; (n/1:'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )8SP$
} <&2,G5XA
} =1VH5pVr}
} m { fQL
lo: ~~l
} c5R{Sl
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冒泡排序: VZoOdR:d
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package org.rut.util.algorithm.support; C":\L>Ax
DO1{r/Ib.{
import org.rut.util.algorithm.SortUtil; Oy&'zigJ
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/** Wwha?W>
* @author treeroot
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* @since 2006-2-2 F21[r!3
* @version 1.0 Z L</
*/ ([*t.
public class BubbleSort implements SortUtil.Sort{ O:)IRB3
~S6 {VK.
/* (non-Javadoc) [R>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ][nUPl
*/ P{eRDQ=
public void sort(int[] data) { ;vdgF
int temp; sCQup^\
for(int i=0;i for(int j=data.length-1;j>i;j--){ oNZW#<K
if(data[j] SortUtil.swap(data,j,j-1); [{F7Pc
} c5e\ckqm^
} S$52KOo
} MF}Lv1/[-J
} ?8@*q6~8
HW726K*
} dA/o4co
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选择排序: =7fh1XnW
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package org.rut.util.algorithm.support; e0HP~&BRs
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import org.rut.util.algorithm.SortUtil; }dJ ~Iy
8
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/** z|*6fFE
* @author treeroot L0b]^_tI
* @since 2006-2-2 `YNC_r#tG
* @version 1.0 %E"/]!}3
*/ gc3 U/
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public class SelectionSort implements SortUtil.Sort { OeGuq.>w
PV6*-[
/* vw]
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* (non-Javadoc) tQ
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* [V,
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 afA'.=
*/ -Y?(Zz_w
public void sort(int[] data) { KHz838C]
int temp; dY@Tt&k8E
for (int i = 0; i < data.length; i++) { XhAcC
int lowIndex = i; }]+}Tipd
for (int j = data.length - 1; j > i; j--) { }#*zjMOz
if (data[j] < data[lowIndex]) { Z'dI!8(Nf
lowIndex = j; r/sRXM:3cZ
} j :Jdwf
} E)wT+\
SortUtil.swap(data,i,lowIndex); 0Y*gJ!a
} {mnSTL`
} dG>Wu o
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} \Ntdl:fSw
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Shell排序: )^S^s>3
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package org.rut.util.algorithm.support; efkie}
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import org.rut.util.algorithm.SortUtil; h;UdwmT
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/** Z?v6pjZ?
* @author treeroot iH}rI'U.
* @since 2006-2-2 u$,Wyi )L
* @version 1.0 rI66frbj
*/ ,
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public class ShellSort implements SortUtil.Sort{ GVc[p\h(
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/* (non-Javadoc) ae#HA[\0G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qn)[1v
*/ IA 9v1:>
public void sort(int[] data) { QqK{~I|l
for(int i=data.length/2;i>2;i/=2){ zHc 4e
for(int j=0;j insertSort(data,j,i); `pAp[]SfQd
} )7"DR+;:
} 2]RH)W86;
insertSort(data,0,1); IcA\3j
} bc=u1=~w
~K#_'Ldrd
/** 4f[M$xU&h
* @param data m *bKy;'8
* @param j xKLcd+hCZ
* @param i i
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*/ xVz -_z
private void insertSort(int[] data, int start, int inc) { u:H 3.5)%
int temp; }V#9tWW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h:Mn$VR,
} 2N8sq(LK{
} ^@LhUs>3
} V?V)&y] 4
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} 3g#=sd!0O@
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快速排序: 9Bvn>+_K
C`~4q<W'
package org.rut.util.algorithm.support; F;&fx(
sEJ;t0.LX
import org.rut.util.algorithm.SortUtil; -anFt+f-
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/** (zro7gKked
* @author treeroot Y=Ar3O*F
* @since 2006-2-2 nh&J3b}B!
* @version 1.0 i&'^9"Z)O
*/ p<0kmA<B/
public class QuickSort implements SortUtil.Sort{ )>X|o$2
. I&)MZ>n
/* (non-Javadoc) C|~JPcl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "K$ Wh1<7
*/ %f>
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public void sort(int[] data) { si!9Gz;
quickSort(data,0,data.length-1); >7(~'#x8A"
} >&Ui*
private void quickSort(int[] data,int i,int j){ -}qGb}F8!
int pivotIndex=(i+j)/2; {Fp`l\,
file://swap s8yTK2v2\
SortUtil.swap(data,pivotIndex,j); PxVI{:Uz
6v2RS
int k=partition(data,i-1,j,data[j]); qfP"UAc{/
SortUtil.swap(data,k,j); seqF84Xd<
if((k-i)>1) quickSort(data,i,k-1); 7k#${,k
if((j-k)>1) quickSort(data,k+1,j); Dss/>!
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,ORG"]_F
} zr; Y1Xt4
/** rb}wv16?
* @param data 23\j1?
* @param i l;{N/cS
* @param j NtA|#"^
* @return $6&GAJe
*/ z Jo#3
private int partition(int[] data, int l, int r,int pivot) { e"s {_V
do{ w{zJE]7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q{De&Bu
SortUtil.swap(data,l,r); 9p\wTzA
} 1nlE3Y?AV
while(l SortUtil.swap(data,l,r); sRe#{EuJ
return l; Q!2iOvK
} JPT I6"/
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} K@j^gF/0B
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改进后的快速排序: WP%{{zR$
d0}%%T
package org.rut.util.algorithm.support; DvRA2(M
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import org.rut.util.algorithm.SortUtil;
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[`zbf_RyO
/** nzE,F\k
* @author treeroot v1"g!%U6
* @since 2006-2-2 ej"o?1l@
* @version 1.0 8F`BJ6='
*/ \{MrQ2jd
public class ImprovedQuickSort implements SortUtil.Sort { w[,?-Xm
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private static int MAX_STACK_SIZE=4096; L%o6 5
private static int THRESHOLD=10; Lr24bv\
/* (non-Javadoc) =N@)CB7a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e0|_Z])D
*/ ZXsY-5$#d-
public void sort(int[] data) { 1hMX(N&|
int[] stack=new int[MAX_STACK_SIZE]; =~W0 ~lxX
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int top=-1; RP|>&I
int pivot; /:Z~"Q*r
int pivotIndex,l,r; _8NEwwhc
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stack[++top]=0; X8,7_D$
stack[++top]=data.length-1; 6Bq~\b^
l#5~t|\
while(top>0){ B::4Qme
int j=stack[top--]; LpiHoavv
int i=stack[top--]; 7$1fy0f[l
#E$Z[G]
pivotIndex=(i+j)/2; _']%qd"%
pivot=data[pivotIndex]; 35%[DUkb
N)vk0IM!
SortUtil.swap(data,pivotIndex,j); }o!#_N0T
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file://partition StdS$XW
l=i-1; Re kb?|{z
r=j; zU4V^N'
do{ Mg a@JA"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'Ffy8z{&3
SortUtil.swap(data,l,r); OZ>)sL
} _[$T29:8\]
while(l SortUtil.swap(data,l,r); (/"K+$8'
SortUtil.swap(data,l,j); nI` f_sp
=$)4:
if((l-i)>THRESHOLD){ 6=G~6Qu
stack[++top]=i; 5M<'A=
stack[++top]=l-1; x!"SD3r=4>
} Bg 7j5
if((j-l)>THRESHOLD){ L=
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stack[++top]=l+1; S/nj5Lh
stack[++top]=j; ;LQ# *NjL\
} l\T!)Ql
I+Ncmg )>
} &*G5J7%w
file://new InsertSort().sort(data); J8u{K.(*7
insertSort(data); B.}_],
} bVa+kYE
/** *]}CSZ[>
* @param data {uaZ<4N.
*/ 4GU/V\e|
private void insertSort(int[] data) { eq@am(#&kY
int temp; <THZ2`tTK3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d}{LM!s
} 7xv4E<r2
} ,]PyDq6
} i}/e}s<-6
-y&v9OC2-
} E ;BPN
sJ))<,e5I
归并排序: [K cki+
AfbB~Ll Bq
package org.rut.util.algorithm.support; /~3N@J
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import org.rut.util.algorithm.SortUtil; KA 5~">l
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/** v`#j
* @author treeroot ,:#,}w_HyO
* @since 2006-2-2 qj~flw1:
* @version 1.0 >lD;0EN
*/ ^[{`q9A#d
public class MergeSort implements SortUtil.Sort{
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/* (non-Javadoc) \H Wcd|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EJf #f
*/ :]P~.PD5,
public void sort(int[] data) { FAQr~G}
int[] temp=new int[data.length]; &8[ZN$Xe"
mergeSort(data,temp,0,data.length-1); [>W"R1/
} KQG-2oW
7d&DrI@~
private void mergeSort(int[] data,int[] temp,int l,int r){ %
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int mid=(l+r)/2; d]tv'|E13
if(l==r) return ; o! aLZ3#X
mergeSort(data,temp,l,mid); [##`Um
mergeSort(data,temp,mid+1,r); 403[oOj
for(int i=l;i<=r;i++){ YBb)/ZghY
temp=data; #O2wyG)oU
} vU=9ydAj?
int i1=l; "$XYIuT
int i2=mid+1; :83,[;GO2
for(int cur=l;cur<=r;cur++){ FJP< bREQ
if(i1==mid+1) ^4c,U9J=
data[cur]=temp[i2++]; 0U$:>bQ
else if(i2>r) e^j<jV`1
data[cur]=temp[i1++]; c_
La^HS
else if(temp[i1] data[cur]=temp[i1++]; r55qmPhg
else z;i4N3-:
data[cur]=temp[i2++]; &&[zT/]P
} >Bc>IO
} "(s6aqO$
K&=D-50%
} PJzc=XPU
^_v[QV
改进后的归并排序: '.?^uM
b2N6L2~V
package org.rut.util.algorithm.support; 6X/wdk
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import org.rut.util.algorithm.SortUtil; 5L8&/EN9-
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/** ~12_D'8D[
* @author treeroot "`pNH'
* @since 2006-2-2 S]}}A
* @version 1.0 n.*3,4.]
*/ PU W[e%
public class ImprovedMergeSort implements SortUtil.Sort { U^MuZ
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private static final int THRESHOLD = 10; v=!YfAn
tR kF
/* (a[.vw^g
* (non-Javadoc) &5?G-mn
* PgMbMH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z~,mRgc$B
*/ |6aJwe+*
public void sort(int[] data) { tQWWgLM
int[] temp=new int[data.length]; oL]mjo=jN
mergeSort(data,temp,0,data.length-1); [F+(^- (
} *h$&0w
y
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private void mergeSort(int[] data, int[] temp, int l, int r) { OTj,O77k
int i, j, k; ._?V%/
int mid = (l + r) / 2; %SAw;ZtQ:
if (l == r) `OqM8U
@
return; ;j{7!GeKa
if ((mid - l) >= THRESHOLD) lwc5S`"
mergeSort(data, temp, l, mid); we3tx{j
else C5|db{=\.*
insertSort(data, l, mid - l + 1); <47k@Ym
if ((r - mid) > THRESHOLD) 7h%4]
mergeSort(data, temp, mid + 1, r); *m9{V8Yi2
else LN4qYp6)G
insertSort(data, mid + 1, r - mid); 4S|=/f
H3, ut
for (i = l; i <= mid; i++) { 8-m
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temp = data; K/txD20
O|
} LXj5R99S
for (j = 1; j <= r - mid; j++) { 8$0\J _
temp[r - j + 1] = data[j + mid]; wJe?t$ac?
} %%%S"$t
int a = temp[l]; gY(1,+0-
int b = temp[r]; `0{ S3v
for (i = l, j = r, k = l; k <= r; k++) { 5,1{Tv`
if (a < b) { U&UKUACn"
data[k] = temp[i++]; 44\cI]!{
a = temp; /`[!_4i
} else { LvcuZZ`1a
data[k] = temp[j--]; UZGDdP
b = temp[j]; +`B'r
'
} 3uV4/%U
} w7FoL
} oKA& An
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/** 5+- I5HX|~
* @param data hN3u@P^
* @param l y7:tr
* @param i \=;uu_v$
*/ Ye5jB2Z
private void insertSort(int[] data, int start, int len) { wG1l+^p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ts9ktPlm
} + H_MV=A^
} TW7:q83{l
} Z
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} >xqM5#m`E$
(gwj)?:
堆排序: c0_E_~
V5mlJml2(
package org.rut.util.algorithm.support; e$e#NoN
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import org.rut.util.algorithm.SortUtil; ['q&@_d7
c3)C{9T](
/** e)H!uR
* @author treeroot -)jax
* @since 2006-2-2 c>HK9z{
* @version 1.0 \,&9
*/ @?kM'*mrZM
public class HeapSort implements SortUtil.Sort{ oH#v6{y
Pm+tQ
/* (non-Javadoc) kM/Te{<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EpYy3^5d
*/ UG;Y^?Ppe5
public void sort(int[] data) { x;LzG t:w
MaxHeap h=new MaxHeap(); JWv{=_2w
h.init(data); !TKkec8$
for(int i=0;i h.remove(); 52d^K0STC
System.arraycopy(h.queue,1,data,0,data.length); C[uOReo
} kW@,$_cK
w%y\dIeI'
private static class MaxHeap{ ?F7o!B
C/=XuKE-t
void init(int[] data){ +GF#?X0^
this.queue=new int[data.length+1]; O(z}H}Fv
for(int i=0;i queue[++size]=data; cXnKCzSxZq
fixUp(size); -|S]oJy
} HYK!}&
} ]Mi.f3QlO6
h3*
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private int size=0; \4d.sy0&>-
0d^Z uTN
private int[] queue; l;A,0,i
p\p\q(S">
public int get() { l?8M
p$M
return queue[1]; 5J2=`=FK
} 1ocJ+
G:W>I=^DaR
public void remove() { 'heJ"k?
SortUtil.swap(queue,1,size--); `J0i.0p
fixDown(1); ^|!I+
} c{+A J8
file://fixdown }8-\A7T
private void fixDown(int k) { ZR0r>@M3v<
int j; nH|,T%
while ((j = k << 1) <= size) { @}-r&/#
if (j < size %26amp;%26amp; queue[j] j++; ->^~KVh&
if (queue[k]>queue[j]) file://不用交换 N|g;W
break; )~J>X{hy
SortUtil.swap(queue,j,k); !7bw5H
k = j; ~EzaC?fQ
} GoM
ip8'u
} !y:%0{l
private void fixUp(int k) { @|}BXQNd
while (k > 1) { +|iYg/2
int j = k >> 1; AK!hK>u`
if (queue[j]>queue[k]) }n_p$g[Nj/
break; ;Q;[*B=kE
SortUtil.swap(queue,j,k); l_tw<`Ep
k = j; }[+!$#
} l v&mp0V+
}
+=q)
~[WF_NU1y
} b2,mCfLsv
iIT8H\e
} ^ KK_qC
|'O[7uT
SortUtil: TjMe?p
h%; e0Xz|
package org.rut.util.algorithm; X?:o;wB
IP`6bMd
import org.rut.util.algorithm.support.BubbleSort; =J-5.0Q\_\
import org.rut.util.algorithm.support.HeapSort; ]uj=:@
import org.rut.util.algorithm.support.ImprovedMergeSort; ._w8J"E5
import org.rut.util.algorithm.support.ImprovedQuickSort; :<Y}l-x
import org.rut.util.algorithm.support.InsertSort; >_dx_<75&
import org.rut.util.algorithm.support.MergeSort; "xmP6=1
import org.rut.util.algorithm.support.QuickSort; M->*{D@a
import org.rut.util.algorithm.support.SelectionSort; VV4Gjc
import org.rut.util.algorithm.support.ShellSort; %3q0(Xl
im} ?rY
/** :A
%^^F%
* @author treeroot 5!YA o\S
* @since 2006-2-2 %J:SO_6
* @version 1.0 bzDIhnw
*/ 8P7"&VYc8
public class SortUtil { ml0.$z
public final static int INSERT = 1; vK7\JZ>
public final static int BUBBLE = 2; *-W#G}O0
public final static int SELECTION = 3; T{qTj6I
public final static int SHELL = 4; H1GRMDNXOA
public final static int QUICK = 5; Jj~EiA
public final static int IMPROVED_QUICK = 6; }G o$
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public final static int MERGE = 7; vb 1@yQ
public final static int IMPROVED_MERGE = 8; Z=B_Ty
public final static int HEAP = 9; FGO[
|]7IN
l0&EZN0V2
public static void sort(int[] data) { KrVcwAcq|1
sort(data, IMPROVED_QUICK); ^-mRP\5
} S##1GOO
private static String[] name={ \^( 0B8|w
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >Rvx[`|O!m
}; [ EFMu;q
[,n c
private static Sort[] impl=new Sort[]{ 2%*MW"Q
new InsertSort(), ] Z8Vj7~
new BubbleSort(), b2 _Yu^
new SelectionSort(), t?o,RN:
new ShellSort(), b|Q)[ y]
new QuickSort(), QB.J,o*XD4
new ImprovedQuickSort(), CQel3Jtt.
new MergeSort(), du$|lxC
new ImprovedMergeSort(), W$U0[^1
new HeapSort() O#wpbrJ
}; ,B4VT 96*
6sIL.S~c)
public static String toString(int algorithm){ PB%-9C0
return name[algorithm-1]; L
%ip>
} M8H5K
+^*iZ6{+7
public static void sort(int[] data, int algorithm) { PJxH7|GSi
impl[algorithm-1].sort(data); '(?
uPr
} Hf'G8vW
D7Y)?Z5A;
public static interface Sort { ?USQlnr:R/
public void sort(int[] data); m9U"[Huv1E
} x21dku<6K[
p!]6ll^
public static void swap(int[] data, int i, int j) { ~~/xRs
int temp = data; ^c~)/F/cF
data = data[j]; LjL[V'JL
data[j] = temp; f.24:Dw,
} ~GE$myUT\p
} =@TQ>Qw%b