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。 I nk76-
插入排序: 3yDvr*8-@
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package org.rut.util.algorithm.support; GzX@Av$
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import org.rut.util.algorithm.SortUtil; coBxZyM 1}
/** b~-9u5.L1
* @author treeroot P=.W.oS
* @since 2006-2-2 tQ"PCm
* @version 1.0 fsu'W]f
*/ y!j1xnzki
public class InsertSort implements SortUtil.Sort{ O\?ei+(H7
Im2g2]
/* (non-Javadoc) &f$jpIyVX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a"EXR-+8
*/ 6k-]2,\#
public void sort(int[] data) { TSeAC[%pL
int temp; 3JwmLGj}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TX;|g1K
} pLRHwL.
} +-ue={'
} q?wBh^
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} B; ~T|ex u
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冒泡排序: I aW8
NGNn_1
package org.rut.util.algorithm.support; w] VvH"?
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import org.rut.util.algorithm.SortUtil; Q"KH!Bu%P
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/** R]dc(D
* @author treeroot eb7`R81G
* @since 2006-2-2 C)`/Q( ^
* @version 1.0 P;h/)-q8
*/ ;kdJxxUox
public class BubbleSort implements SortUtil.Sort{ e_Y>[/Om
wI)W:mUZZ
/* (non-Javadoc) $OmtN"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ],#9L
*/ p0b&CrALx
public void sort(int[] data) { qk+:p]2
int temp; cdk;HK_Ve.
for(int i=0;i for(int j=data.length-1;j>i;j--){ avdi9!J2
if(data[j] SortUtil.swap(data,j,j-1); dz?:)5>I
} CpA=DnZ
} /@q_`tU
} T2k5\r8
} )x]/b=m
a&j
H9
} )U5AnL
iYFM@ta
选择排序: Xod#$'M>
jQc$>M<"o
package org.rut.util.algorithm.support; Bp9
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import org.rut.util.algorithm.SortUtil; ofsua?lSe
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/** 233jT@Z
* @author treeroot Xq9%{'9
* @since 2006-2-2 (.Sj"6+
* @version 1.0 I~EJctOG
*/ hCM+=]z"
public class SelectionSort implements SortUtil.Sort { -K PbA`j+
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/* b16\2%Ea1
* (non-Javadoc) *&!&Y*Jzg
* .a?GC(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {o AJL
*/ Iq(BH^K
public void sort(int[] data) { ^k/@y@%
int temp; ~#Vrf0w/
for (int i = 0; i < data.length; i++) { (zte 'F4
int lowIndex = i; c JGU~\
for (int j = data.length - 1; j > i; j--) { eWE7>kwh
if (data[j] < data[lowIndex]) { "p0e6Z=
lowIndex = j; 6ID@ 0
} L`3x0u2
} sZA7)Z`7
SortUtil.swap(data,i,lowIndex); U%_BgLwy%
} m>DBO|`
} VI/77
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} OjFB_
N
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Shell排序: wa2?%y_G
3vepJ)D (
package org.rut.util.algorithm.support; _ 5nLrn,~
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import org.rut.util.algorithm.SortUtil; 2Jm#3zFYz3
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/** 9=TjSRS
* @author treeroot Lk#8G>U
* @since 2006-2-2 )G
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* @version 1.0 [3o^06V8j
*/ k nTCX
public class ShellSort implements SortUtil.Sort{ ;auT!a~a#
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/* (non-Javadoc) c'O"</
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zO)Bf(
*/ @kBy|5
public void sort(int[] data) { Z}$wvd
for(int i=data.length/2;i>2;i/=2){ @?e+;Sx
for(int j=0;j insertSort(data,j,i); F}MjZZj(U=
} K-<<s
} [`(W(0U%
insertSort(data,0,1); Tg/?v3M88
} (}*1,N!#
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/** s`#g<_ {X
* @param data &uP,w#
* @param j 0Sx$6:-~
* @param i JIL(\d
*/ mM(Z8PA9-
private void insertSort(int[] data, int start, int inc) { a1#",%{I
int temp; @5}(Y( @
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \&BT#8ELG
} :yxP3e%rp
} d
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} wNvq['P
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} F,}7rhY(U^
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快速排序: 5D+rR<pD}"
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package org.rut.util.algorithm.support; ,4mb05w;d
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import org.rut.util.algorithm.SortUtil; 2=IZD `{!
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/** <I 0 EjV
* @author treeroot T3bYj|rh=
* @since 2006-2-2 z?<Xx?Kk
* @version 1.0 lK Ry4~O
*/ VV-%AS6;
public class QuickSort implements SortUtil.Sort{ .k!<Oqa
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/* (non-Javadoc) \ lW*.<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gY {/)"
*/ ovk^
public void sort(int[] data) { EG!Nsb^,
quickSort(data,0,data.length-1); E3V_qT8
} 3w&Z:<
private void quickSort(int[] data,int i,int j){ L'HO"EZFj
int pivotIndex=(i+j)/2; p'4ZcCW?f
file://swap |U`ASo
SortUtil.swap(data,pivotIndex,j); B-p ].
"G!,gtA~
int k=partition(data,i-1,j,data[j]); o0kKf+[
SortUtil.swap(data,k,j); / _Fi4wZ
if((k-i)>1) quickSort(data,i,k-1); L"L a|
if((j-k)>1) quickSort(data,k+1,j); Ri/D>[
t vp kc;
} \SooIEl@
/** byHXRA)39
* @param data 'tDVSj
* @param i 1`2lq~=GV
* @param j lm8<0*;,
* @return Ask~
*/ \iH\N/
private int partition(int[] data, int l, int r,int pivot) { LHMA-0$ ?)
do{ ua!RwSo
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R:y u
SortUtil.swap(data,l,r); "y-/ 9C
} 4oPr|OKj{*
while(l SortUtil.swap(data,l,r); 6$G@>QCBS
return l; V!f'
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} @4wN-T+1
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} a/Cc.s
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改进后的快速排序: ^.>XDUO F
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package org.rut.util.algorithm.support; OSkBBo]~z
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import org.rut.util.algorithm.SortUtil; "b0!h6$!H
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/** ?Lem|zo
* @author treeroot 2+C8w%F8
* @since 2006-2-2 X?SLYm@v
* @version 1.0 ?m h0^G
*/ p><DA fB
public class ImprovedQuickSort implements SortUtil.Sort { $ItPUYi";
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private static int MAX_STACK_SIZE=4096; (*G'~gSX
private static int THRESHOLD=10; *h~(LH"tN
/* (non-Javadoc) 98!H$6k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,QHn} 3fW
*/ Dl_SEf6b
public void sort(int[] data) { 9|2LuHQu+
int[] stack=new int[MAX_STACK_SIZE]; QW>(LG G=
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int top=-1; E akS(Q?
int pivot; :snn-e0l
int pivotIndex,l,r; l`vr({A
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stack[++top]=0; l]mn4cn3
stack[++top]=data.length-1; `bEum3l\6]
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while(top>0){ o88Dz}a
int j=stack[top--]; )q'~<QxI\
int i=stack[top--]; z<s4-GJ)?
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pivotIndex=(i+j)/2; Clzz!v
pivot=data[pivotIndex]; k?'PCV
o/p'eY:)
SortUtil.swap(data,pivotIndex,j); .E0*lem'hE
ai~JY[
file://partition fSzX /r
l=i-1; ]@7]mu:oL
r=j; 'gv7&$X}4
do{ XrQS?D`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U-GV^j
SortUtil.swap(data,l,r); be5NasC
} x_|: 3I
while(l SortUtil.swap(data,l,r); d^jIsE `
SortUtil.swap(data,l,j); /'0,cJnm
U-3uT&m*9.
if((l-i)>THRESHOLD){ _\2^s&iJh
stack[++top]=i; N3g?gb"Ex)
stack[++top]=l-1; k0R;1lZ0n
} 2\=cv
if((j-l)>THRESHOLD){ YP vg(T
stack[++top]=l+1; 9wC:8@`6E
stack[++top]=j; 9 ulr6
} A[m4do
=m=utd8
} },5_h0
file://new InsertSort().sort(data); )SYZ*=ezl.
insertSort(data); mLn =SU{#
} ICgyCsZ,
/** /A) v$Bv=
* @param data n"{oj7E0a
*/ e/h7x\Z
private void insertSort(int[] data) { `g iCytv
int temp; D;Jb'Be
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;.r >
} P'6(HT>F?
} oXdel
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} Xo\S9,s{
v$;@0t:;#
} `UQEXoB)
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归并排序: Dm^l?Z
JYQ.EAsr!
package org.rut.util.algorithm.support; "b`7[ ;a
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import org.rut.util.algorithm.SortUtil; ;
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/** FfG%C>E6~
* @author treeroot JCD?qeTg
* @since 2006-2-2 #3+~.,X9
* @version 1.0 y6FKg)
*/ 7E\g
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public class MergeSort implements SortUtil.Sort{ TM-Fu([LMV
C `6S}f,
/* (non-Javadoc) zqf[Z3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zw#<E
=\
*/ $ser+Jt=
public void sort(int[] data) { [S0mY["
int[] temp=new int[data.length]; "
"%#cDR
mergeSort(data,temp,0,data.length-1); g~)3WfC$[
} 6tm\L
V.VJcx
private void mergeSort(int[] data,int[] temp,int l,int r){ t$I|E
int mid=(l+r)/2; }-nU3{1
if(l==r) return ; ~ffwLgu!
mergeSort(data,temp,l,mid); i}lRIXjdV
mergeSort(data,temp,mid+1,r); A[JM4x
for(int i=l;i<=r;i++){ _#pnjo
temp=data; #pA[k-
} |^Kjz{
int i1=l; "%
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int i2=mid+1; AC4 l<:Yh
for(int cur=l;cur<=r;cur++){ !y*oF{RZ
if(i1==mid+1) 39D }
data[cur]=temp[i2++]; s|2}2<+
else if(i2>r) Dbz]{_Y;
data[cur]=temp[i1++]; sfI N)jh
else if(temp[i1] data[cur]=temp[i1++]; %?=)!;[
else m UgRm]
data[cur]=temp[i2++]; _tWE8r,
} I7G,`h+H
} VMHC/jlX@r
=x
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} C*rd;+1A
ug&92Hdvy3
改进后的归并排序: .'lN4x
r\xXU~$9v
package org.rut.util.algorithm.support; k?j Fh6%
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import org.rut.util.algorithm.SortUtil; LdEE+"Jw
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/**
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* @author treeroot n(R_#,Hs
* @since 2006-2-2 bU+9Gi@v
* @version 1.0 `%y5\!X
*/ plXG[1;&G
public class ImprovedMergeSort implements SortUtil.Sort { * nCx[
=l,#iYJP8
private static final int THRESHOLD = 10; tcOnM w
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/* NvHN -^2
* (non-Javadoc) `~nCbUUee
* IG|\:Xz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x'i0KF
*/ v[L[A3`"/
public void sort(int[] data) { &+- e
int[] temp=new int[data.length]; ^)Smv\Md
mergeSort(data,temp,0,data.length-1); h,]tQ#!s8
}
ccRlql(
EG%I1F%
private void mergeSort(int[] data, int[] temp, int l, int r) { ,tau9>!
int i, j, k; ZT r:xX{R6
int mid = (l + r) / 2; K!9y+%01
if (l == r) E2h(w_l
return; JIVo=5c}
if ((mid - l) >= THRESHOLD) nT_*EC<.
mergeSort(data, temp, l, mid); z'?SRK5+
else Ad^dF'SN
insertSort(data, l, mid - l + 1); d:A\<F
if ((r - mid) > THRESHOLD) 4tbw*H5!5
mergeSort(data, temp, mid + 1, r); iK ohuZr
else G!nl'5|y
insertSort(data, mid + 1, r - mid); f+{c1fb>s
KrJ 5"1=
for (i = l; i <= mid; i++) { 4s[`yV
temp = data; "w>rlsT<O
} EV:_Kx8f P
for (j = 1; j <= r - mid; j++) { MKV=m8G=
temp[r - j + 1] = data[j + mid]; (irk$d %
} pTc$+Z73
int a = temp[l]; >/(i3)
int b = temp[r]; 8w03{H
0
for (i = l, j = r, k = l; k <= r; k++) { Cw6>^
if (a < b) { d,zp`S
data[k] = temp[i++]; V+Y|4Y&
a = temp; KX0<j
} else { d^ 2u}^kG
data[k] = temp[j--]; eL<m.06cfY
b = temp[j]; W/#KX}4
} d1UVvyH
} x*NqA(r
} CW.&Y?>Tv
> .a+:
/** v]B0!k&4.
* @param data h=uiC&B
* @param l K#_~
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* @param i CkmlqqUHC
*/ %fn'iKCB
private void insertSort(int[] data, int start, int len) { tMD^$E"C
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n}AR/3}
} K^z5x#Yj
} !L0E03')k
} |:7EJkKZ
} 'mBLf&fB
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堆排序: )H[h53bIq
`'G),{ j
package org.rut.util.algorithm.support; uZqu xu.
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import org.rut.util.algorithm.SortUtil; VV0EgfJ
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/** Mv7w5vTl
* @author treeroot >0g`U
* @since 2006-2-2 MYDf`0{$_a
* @version 1.0 y]QQvCJr3d
*/ . T6_N
public class HeapSort implements SortUtil.Sort{ WQIM2_=M
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/* (non-Javadoc) &P,4EaC9;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7)8rc(58
*/ T 9<H%iF
public void sort(int[] data) { cdek^/
MaxHeap h=new MaxHeap(); 5H'b4Cyi`
h.init(data); 32iWYN
for(int i=0;i h.remove(); O9qKwn;q(
System.arraycopy(h.queue,1,data,0,data.length); k"DQbUy0L
} %b-;Rn
.^9/ 0.g8t
private static class MaxHeap{ QRg"/62WCD
[kp7LA"`
void init(int[] data){ -Iruua7b
this.queue=new int[data.length+1]; 1v[#::Bs
for(int i=0;i queue[++size]=data; R
uFu,H-
fixUp(size); <@x+N%C
} U"%8"G0)
} X('Q;^`
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private int size=0; 1^WA
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private int[] queue; rvoS52XG,
VvMU)
public int get() { )qe$rD;N
return queue[1]; V"2AN3~&
} ,39$iHk
gE6y&a
public void remove() { y?R <g^A
SortUtil.swap(queue,1,size--); zOu$H[
fixDown(1); k. ?
T.9
} 6q
xUT
file://fixdown `X.=uG+m
private void fixDown(int k) { T h- vG
int j; 9V4V}[%
while ((j = k << 1) <= size) { 'bY|$\I
if (j < size %26amp;%26amp; queue[j] j++; )Ido|!]0d
if (queue[k]>queue[j]) file://不用交换 w3?t})PB&
break; lA^Kh
SortUtil.swap(queue,j,k); 82@;.%
k = j; 1^H<+0
} 4iPua"8
} @SQ*/sw (c
private void fixUp(int k) { Vp-OGX[
while (k > 1) { >G3J3P(
int j = k >> 1; _^2[(<Gmv
if (queue[j]>queue[k]) W!Ct[t
break; zC>(!fJqq
SortUtil.swap(queue,j,k); 2S10j%EeI
k = j; ``YL]
<<
} $d??(
} PJ11LE
5_tK3Q8?
} K/.hJ
j
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} sxQ ,x/O
:c/=fWM%
SortUtil: Xi`U`7?D(=
3<'Q`H >
package org.rut.util.algorithm; kA:;c}p
mBgx17K/-_
import org.rut.util.algorithm.support.BubbleSort; \ g[f4xAV
import org.rut.util.algorithm.support.HeapSort; O>):^$-K%
import org.rut.util.algorithm.support.ImprovedMergeSort; LAVt/TcZS|
import org.rut.util.algorithm.support.ImprovedQuickSort; m&z%kVsg]
import org.rut.util.algorithm.support.InsertSort; )I
UWM
import org.rut.util.algorithm.support.MergeSort; .j<B5/+
import org.rut.util.algorithm.support.QuickSort; I;m@cSJ|j
import org.rut.util.algorithm.support.SelectionSort; fD}]Mi:V
import org.rut.util.algorithm.support.ShellSort; vFvu8*0
Hr,gV2n
/** Qc<O; #
* @author treeroot _j<M}
* @since 2006-2-2 >5},qs:lZ
* @version 1.0 VKfHN_m*
*/ ~4X!8b_
public class SortUtil { LYT<o FE-
public final static int INSERT = 1; 2+Y`pz47W
public final static int BUBBLE = 2; 7ofH@U
public final static int SELECTION = 3; m3!MHe~t
public final static int SHELL = 4; \hD
bv5
public final static int QUICK = 5; {rJF)\2
public final static int IMPROVED_QUICK = 6; MJR\ g3
public final static int MERGE = 7; pQ`L=#WM
public final static int IMPROVED_MERGE = 8; 0YRYCO$
public final static int HEAP = 9; tfIBsw.
Y~?YA/.x
public static void sort(int[] data) { q'-l;V|
sort(data, IMPROVED_QUICK); x=|@AFI
} GT}#iM
private static String[] name={ -ns a3P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =y/Lbe}:
}; 5{f/H]
P
2Sd6b 2-
private static Sort[] impl=new Sort[]{ KFG^vmrn
new InsertSort(), U1tPw`0h
new BubbleSort(), EGO@`<"h
new SelectionSort(), uXa}<=O
new ShellSort(), S5vMP
N
new QuickSort(), . ihn@eg
new ImprovedQuickSort(), <.XoC?j
new MergeSort(), }j@@
new ImprovedMergeSort(), (MU7
new HeapSort() j'b4Sbs-f
}; Ybiz]1d
bv" ({:x
public static String toString(int algorithm){ .f<,H+ m^
return name[algorithm-1]; aV#;o9H{
} 5 :>
~OfKn1D
public static void sort(int[] data, int algorithm) { !H.lVA
impl[algorithm-1].sort(data); GgZf6~b1J
} 3ZZI1_j
3+PM_c)Y
public static interface Sort { z1A-EeT
public void sort(int[] data); .b)(_*
} )Em,3I/.l
A Mfu|%ZL
public static void swap(int[] data, int i, int j) { #Jb$AA!z
int temp = data; k( ^ b
data = data[j]; t$%}*@x7
data[j] = temp; e.h:9`"*
} S(xA}0]
} K",]_+b