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。 D1bS=>
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插入排序: ITh1|yP
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package org.rut.util.algorithm.support; :qy`!QPUm
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import org.rut.util.algorithm.SortUtil; l5S(xQ
/** UwY <3ul
* @author treeroot RsU=fe,
* @since 2006-2-2 +uW$/_Y$
* @version 1.0 N)A?*s'v~
*/ QOIi/flK
public class InsertSort implements SortUtil.Sort{ 9@C3jZ+9`H
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/* (non-Javadoc) u4B, |_MK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vBsd.2t~
*/ >x)YdgJ*
public void sort(int[] data) { WM BntB
int temp; !_s|h@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hNUAwTH6
} ^[XxE Lx
} iC&=-$vu
} HTI1eLZ2
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} 1&c>v3 $2
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冒泡排序: %JDG aG'
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package org.rut.util.algorithm.support; (r`+q[
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import org.rut.util.algorithm.SortUtil; 1d!7GrD F
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/** Mw7!w-1+
* @author treeroot $*K5
* @since 2006-2-2 vP&dvAUF
* @version 1.0 |x["fWK
*/ =<(:5ive
public class BubbleSort implements SortUtil.Sort{ 8):I< }s#
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/* (non-Javadoc) "^gZh3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +V1EqC*
*/ W^0F(9~!(
public void sort(int[] data) { m_~
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int temp; qAm$yfYs`
for(int i=0;i for(int j=data.length-1;j>i;j--){ l?(nkg["nY
if(data[j] SortUtil.swap(data,j,j-1); W5(t+$L.
} P]T(I/\g
} X`]-)(UX
} G;V@oT
} BDxrS q,H
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} ;6t>!2I>C
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选择排序: %f\{ ]
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package org.rut.util.algorithm.support; k);z}`7
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import org.rut.util.algorithm.SortUtil; ]R}#3(]1
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/** b>E%&sf
* @author treeroot VP\HPSp
* @since 2006-2-2 zy4AFW
* @version 1.0 &d`Umm]
*/ IGT~@);
public class SelectionSort implements SortUtil.Sort { .=rv,PWjZ
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/* >h<eEv/
* (non-Javadoc) Rp A76ug
* Nv*x^y]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?1 r@r
*/ 7GfgW02
public void sort(int[] data) {
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int temp; twt
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for (int i = 0; i < data.length; i++) { ]l+Bg;F#V
int lowIndex = i; B+);y
for (int j = data.length - 1; j > i; j--) { p\:_E+lsU
if (data[j] < data[lowIndex]) { aRq7x~j
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lowIndex = j; <.$<d
} dJ?VN!B0
} Y+iC/pd
SortUtil.swap(data,i,lowIndex); G#5Cyu<r!
} lZ0+:DaP2
} T;GBZR%
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} a%tm[Re
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Shell排序: dpZ7eJ
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package org.rut.util.algorithm.support; Jl Q%+$
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import org.rut.util.algorithm.SortUtil; vKAHf;1
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/** %%c0UaV
* @author treeroot kBIF[.v(\
* @since 2006-2-2 r {)d?Ho=
* @version 1.0 !/< 5.9!9r
*/ 5|m|R"I*Y
public class ShellSort implements SortUtil.Sort{ #lltXqvD?
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/* (non-Javadoc) vc6UA%/f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tt[P{mMQ
*/ 98Srn63O
public void sort(int[] data) { ="@W)"r
for(int i=data.length/2;i>2;i/=2){ 1?(BWX)7
for(int j=0;j insertSort(data,j,i); Q+mMpI
} ZyCAl9{p
} P.qD,$-
insertSort(data,0,1); ;DC0LJ
} au"HIyi?k
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/** kSU5
}
* @param data -/x +M-X#
* @param j H4l:L(!D
* @param i bw%1*;n)
*/ )FWF T:P~
private void insertSort(int[] data, int start, int inc) { T~"tex]
int temp; bQXxb(^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [.6>%G1C
} ez(4TtT
} F1M@$S,
} yel>-=Vn
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} =#BeAsFfO
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快速排序: |\QR9>
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package org.rut.util.algorithm.support; $nn~K
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import org.rut.util.algorithm.SortUtil; M|n)LyL
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/** rFx2S
* @author treeroot #> CN,eiZ
* @since 2006-2-2 te6[^_k
* @version 1.0 H5&>Eny
*/ 7y[B[$P
public class QuickSort implements SortUtil.Sort{ s{s0#g
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/* (non-Javadoc) aNqVs|H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fx;5j;
*/ PU'v o4
public void sort(int[] data) { W/\7m\B
quickSort(data,0,data.length-1); [w{ZP4d>
} qb" !
private void quickSort(int[] data,int i,int j){ Ce0I8B2y
int pivotIndex=(i+j)/2; wR;l"*j
file://swap RF;N]A?*
SortUtil.swap(data,pivotIndex,j); `2@-'/$\I|
]!A;-m
int k=partition(data,i-1,j,data[j]); "|Pl(HX
SortUtil.swap(data,k,j); |SxEJ
if((k-i)>1) quickSort(data,i,k-1); 8odVdivh
if((j-k)>1) quickSort(data,k+1,j); .H>Rqikj
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} G`
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/** Kz<xu ulr
* @param data )ld7^G
* @param i Y{O&-5H^|
* @param j D3K`b4YV
* @return ko:I.6- K
*/ \
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private int partition(int[] data, int l, int r,int pivot) { QB.7n&u
do{ ]u,~/Gy
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /Mk)H
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SortUtil.swap(data,l,r); B.WJ6.DkS
} y H'\<bT
while(l SortUtil.swap(data,l,r); ~"wD4Ue
return l; nY8UJy}<oL
} q-RGplx
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} e56#Qb@$\
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改进后的快速排序: XMdc n,
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package org.rut.util.algorithm.support; ]lo1Kw
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import org.rut.util.algorithm.SortUtil; j~8+,:
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/** ~3%3{aa
* @author treeroot U\
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* @since 2006-2-2 Z\L@5.*ydE
* @version 1.0 _qg6(
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*/ "5YdmBy
public class ImprovedQuickSort implements SortUtil.Sort { LBE".+
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private static int MAX_STACK_SIZE=4096; 35>}$1?-6
private static int THRESHOLD=10; |.
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/* (non-Javadoc) "h2Ny#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |]q=D1/A
*/ s6D-?G*u%8
public void sort(int[] data) { H94.E|Q\+
int[] stack=new int[MAX_STACK_SIZE]; s/^k;qw
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int top=-1; Z])_E6.
int pivot; 9,W-KM
int pivotIndex,l,r; % n{W
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stack[++top]=0; /OP*ARoC21
stack[++top]=data.length-1; 'l:2R,cP
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while(top>0){ F[u%t34'
int j=stack[top--];
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int i=stack[top--]; sfV.X:ev
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pivotIndex=(i+j)/2; *p3P\ H^5
pivot=data[pivotIndex]; SSXS
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SortUtil.swap(data,pivotIndex,j); eTc`FXw`
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file://partition k~R[5W|'
l=i-1; [FL I+;gY
r=j; /4?`F}7)
do{ ]cr;PRyv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =#tQIhX`
SortUtil.swap(data,l,r); s2v*
} b8>9mKs
while(l SortUtil.swap(data,l,r); ddP,_.0
SortUtil.swap(data,l,j); a%!XLyq
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if((l-i)>THRESHOLD){ ~Z2eQx
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stack[++top]=i; l:eN u}{&
stack[++top]=l-1; C6w{"[Wv=X
} f
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if((j-l)>THRESHOLD){ DKl7|zG4
stack[++top]=l+1; }/spo3,6
stack[++top]=j; e{;e
} fYy.>m+P1
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} yxN!*~BvL
file://new InsertSort().sort(data); )0mDN.
insertSort(data); JNaW>X$K
} e_], O_Z
/** :Y>]6
* @param data At(9)6n8
*/ [QbXj0en$
private void insertSort(int[] data) { Bx-,"Z \
int temp; zfb _ )
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k_>{"Rc
} rbPs~C-[
} H4NEB1TO>
} )F9r?5}v4x
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} N| Pm|w*?
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归并排序: ^gzNP#A<'o
A#S:_d
package org.rut.util.algorithm.support; t5X
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import org.rut.util.algorithm.SortUtil; lzG;F]
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/** hxVM]e[
* @author treeroot WN+Jf
* @since 2006-2-2 _|3TC1N$n
* @version 1.0 K9Xd?
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*/ DA)v3Nd
public class MergeSort implements SortUtil.Sort{ oxQID
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/* (non-Javadoc) vQmackY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ""3m!qn#
*/ ^YJA\d@
public void sort(int[] data) { WWW#s gM%
int[] temp=new int[data.length]; { $/Fk6qr
mergeSort(data,temp,0,data.length-1); >JPJ%~y
} }.UI&UZ-
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private void mergeSort(int[] data,int[] temp,int l,int r){ 1L8ULxi_?]
int mid=(l+r)/2; !u4Z0 !Ll
if(l==r) return ; 5`'=Ko,N
mergeSort(data,temp,l,mid); 9C}aX}`
mergeSort(data,temp,mid+1,r); 4c[)}8\
for(int i=l;i<=r;i++){ 6BU0hV
temp=data; mqk(UOK`
} ' P`p.5nH
int i1=l; KV}U{s+U8
int i2=mid+1; 19 wqDIE0
for(int cur=l;cur<=r;cur++){ c4>sE[]
if(i1==mid+1) .xkV#ol
data[cur]=temp[i2++]; #r.` V!=
else if(i2>r) #oJbrh9J6
data[cur]=temp[i1++]; _~ZQ b
else if(temp[i1] data[cur]=temp[i1++]; xPMyG);
else _:X|R#d
data[cur]=temp[i2++]; ?ZHE8
} ?h )3S7
} I49l2>
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} ix7
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改进后的归并排序: YD46Z~$
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package org.rut.util.algorithm.support; ?e y&Un"
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import org.rut.util.algorithm.SortUtil; `x$}~rP&)!
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/** ;5Vk01R
* @author treeroot G:c8`*5Q
* @since 2006-2-2 8#]7`o
* @version 1.0 )xvx6?Ah|
*/ ^UvK~5tBV
public class ImprovedMergeSort implements SortUtil.Sort { 9MB\z"b?A
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private static final int THRESHOLD = 10; zz 'dg-F
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/* _A,-[*OKI
* (non-Javadoc) 0^y@p&;/.
* O<dZA=Oez
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p~q_0Pg%
*/ RUk<=!U
public void sort(int[] data) { #i +P(xV
int[] temp=new int[data.length]; Qw<kX*fxrI
mergeSort(data,temp,0,data.length-1); [p W1=tI
} ,/?%y\:J
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private void mergeSort(int[] data, int[] temp, int l, int r) { 9IvcKzS2
int i, j, k; RZd4(7H=q
int mid = (l + r) / 2; 7"n1it[RJ8
if (l == r) sh
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return; W?^8/1U
if ((mid - l) >= THRESHOLD) qXB03}] G
mergeSort(data, temp, l, mid); ? gA=39[j
else ~w1{zxs
insertSort(data, l, mid - l + 1); fsrg2:kQ
if ((r - mid) > THRESHOLD) +(<n |~
mergeSort(data, temp, mid + 1, r); <RoX| zJw
else +f\pk \Ith
insertSort(data, mid + 1, r - mid); RUS7Z~5
A&|Wvb=
for (i = l; i <= mid; i++) { K/wiL69
temp = data; X40la_[.
} hINnb7o
for (j = 1; j <= r - mid; j++) { Q.9Ph
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temp[r - j + 1] = data[j + mid]; jTd4 H)
} S< EB&P
int a = temp[l]; Qh|-a@
int b = temp[r]; xxLgC;>[
for (i = l, j = r, k = l; k <= r; k++) { _b!;(~@p
if (a < b) { xH"W}-#[
data[k] = temp[i++]; ?GUz?'d
a = temp; Siz!/O!'
} else { r*i$+ Z
data[k] = temp[j--]; kMl @v`
b = temp[j]; 6+Wr6'kuH
} .*EOVo9S
} 6bbZ<E5At
} ,5eH2W
;&+[W(7Sy
/** Sv~YFS :oy
* @param data V@#*``M,3
* @param l *R_'$+
* @param i >9o,S3
*/ z"6ZDC6
private void insertSort(int[] data, int start, int len) { (#j2P0B
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gut J_2f^9
} O1x0[sy
} aCU7w5
} -5V)q.Og
} e;A^.\SP
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堆排序: A*7Io4e!
gx!*O<|e4
package org.rut.util.algorithm.support; ASzzBR;?_
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import org.rut.util.algorithm.SortUtil; ="3a%\
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/** |5oKq'(b
* @author treeroot {yvb$ND|j{
* @since 2006-2-2 Y!++CMzU
* @version 1.0 QL)>/%yU
*/ 1DEO3p
public class HeapSort implements SortUtil.Sort{ <a8#0ojm
WF ?/GN
/* (non-Javadoc) T!u'V'Ei2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zW"~YaO%C
*/ a.
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public void sort(int[] data) { xa87xX=a
MaxHeap h=new MaxHeap(); o &BPG@n
h.init(data); OW+ e_im}
for(int i=0;i h.remove(); v}7@CP]nV
System.arraycopy(h.queue,1,data,0,data.length); [c&2i`C
} x @1px&^
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private static class MaxHeap{ KI Ek/]<H
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void init(int[] data){ Dk)@>l:gI,
this.queue=new int[data.length+1]; 8ivRp<9
for(int i=0;i queue[++size]=data; :D"@6PC]
fixUp(size);
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} )8pcf`h{
} uk`T+@K
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private int size=0; !"g=&Uy&
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private int[] queue; i Td-n9
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public int get() { jg~_'4f#
return queue[1]; u$WBc\j
} CnabD{uTf
oJP<'l1
public void remove() { ?Wwh
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SortUtil.swap(queue,1,size--); x Z|&/Ci
fixDown(1); =y?#^
} h6g=$8E
file://fixdown NNwc!x)*
private void fixDown(int k) { (N,nux(0k
int j; )r ULT$;i@
while ((j = k << 1) <= size) { $GQphXb$
if (j < size %26amp;%26amp; queue[j] j++; 0(wf{5
if (queue[k]>queue[j]) file://不用交换 uVN.=
break; >HE,'
SortUtil.swap(queue,j,k); 4Z*|Dsw
k = j; riID,aut
} @Ppo &>
} N g58/}zO
private void fixUp(int k) { y&7YJx
while (k > 1) { .j:i&j(
int j = k >> 1; joe9.{
if (queue[j]>queue[k]) 2*+3RrJ
break; JYPxd~T/-
SortUtil.swap(queue,j,k); 2bWUa~%B
k = j; -r!42`S
} ]x1p!TSU
} K6E}";;
"cwR^DoD&
} f:xUPH?+
[1NaH
} i#k-)N _$
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SortUtil: *]5z^>
q;7
*%3oyWwCd
package org.rut.util.algorithm; ,NDh@VYe
:#WEx_]
import org.rut.util.algorithm.support.BubbleSort; >b'w'"
import org.rut.util.algorithm.support.HeapSort; S0F@#mSQ?
import org.rut.util.algorithm.support.ImprovedMergeSort; fVYiwE=F
import org.rut.util.algorithm.support.ImprovedQuickSort; LaDY`u0G%
import org.rut.util.algorithm.support.InsertSort; 9J?W '8s5
import org.rut.util.algorithm.support.MergeSort; PCtkjd
import org.rut.util.algorithm.support.QuickSort; kg:l:C)Tq
import org.rut.util.algorithm.support.SelectionSort; Te+^J8
import org.rut.util.algorithm.support.ShellSort; H-185]7
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/** N3ZiGD
* @author treeroot [6_"^jgH
* @since 2006-2-2 N?$7Z v[G
* @version 1.0 M2dmG<
*/ q?yMa9ZZky
public class SortUtil { i!L;? `F{
public final static int INSERT = 1; uMHRUi
public final static int BUBBLE = 2; j$+gq*I&E
public final static int SELECTION = 3; d4J<,
public final static int SHELL = 4; tR<L`?4
public final static int QUICK = 5; |-n
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public final static int IMPROVED_QUICK = 6; e[}],W
public final static int MERGE = 7; t~ -J %$
public final static int IMPROVED_MERGE = 8; m*gj|1k
public final static int HEAP = 9; E[UO5X
u^l*5F%DK
public static void sort(int[] data) { 7gm:ZS
sort(data, IMPROVED_QUICK); <