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。 -%7Jj;yA
插入排序: {IF}d*:
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package org.rut.util.algorithm.support; zWP.1 aA&
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import org.rut.util.algorithm.SortUtil;
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/** ~pDRF(
* @author treeroot m1M;'tT@
* @since 2006-2-2 cWX"e6
* @version 1.0 1D3dYVE
*/ .eZPp~[lAN
public class InsertSort implements SortUtil.Sort{ tRpL0 =y
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/* (non-Javadoc) 7<Z~\3x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g]oc(RM
*/ $X{B*
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public void sort(int[] data) { ?HEo9/ *7
int temp; '2Mjz6mBDA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #3 }5cC8_
} ({ :yw
} .YnP%X=
} GF$rPY[
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} .x\/XlM
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冒泡排序: Dohl,d
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package org.rut.util.algorithm.support; {7j6$.7J$&
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import org.rut.util.algorithm.SortUtil; :G6 xJlE|
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/** '=Ip5A{S /
* @author treeroot v '"1/% L
* @since 2006-2-2 rH
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* @version 1.0 E.WNykF-
*/ \(3Qqbw
public class BubbleSort implements SortUtil.Sort{ P22y5z~
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/* (non-Javadoc) ^=heen<S%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [<@A8Q5,y
*/ p4<M|1Z&
public void sort(int[] data) { n9mM5H47
int temp; ImT+8pa
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ah8^^h|TPJ
if(data[j] SortUtil.swap(data,j,j-1); P?yOLG+)l)
} '>S8t/
} ` maN5)
} Y3sNr)qss
} f6dE\
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} 8as$h*Wh
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选择排序: jN5} 2 p*
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package org.rut.util.algorithm.support; wj";h Aw
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import org.rut.util.algorithm.SortUtil; K"t:B
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/** ,/[dmoe
* @author treeroot 0qotC6l~_w
* @since 2006-2-2 y:^>(l #;
* @version 1.0 m`1}O"<&i
*/ GFy0R"&d[
public class SelectionSort implements SortUtil.Sort { T[8"u<O96
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/* qKI4p3&E
* (non-Javadoc) Fc{6*wtO
* [/#k$-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @poMK:
*/ 4BUK5)B
public void sort(int[] data) { $
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int temp; pyb}ha
for (int i = 0; i < data.length; i++) { I,`D&
int lowIndex = i; #u]_7/(</`
for (int j = data.length - 1; j > i; j--) { 2Xq!'NrS
if (data[j] < data[lowIndex]) { x:&L?eOT
lowIndex = j; S:B-nI
} ngH~4HyT
} c?3F9w#
SortUtil.swap(data,i,lowIndex); 19YJ`(L`x
} VgC9'"|
} ;29X vhS8
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} 51FK~5
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Shell排序: aaa#/OWQZ
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package org.rut.util.algorithm.support; 59%f|.Z)
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import org.rut.util.algorithm.SortUtil; \Kzt*C-ZH
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/** si"mM>e
* @author treeroot 4'4s EjyA
* @since 2006-2-2 'zD;:wT
* @version 1.0 w|UKMbRMU]
*/ Kt&$Si
public class ShellSort implements SortUtil.Sort{ 1SJHX1CxX
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/* (non-Javadoc) /{#_Um0.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JEkIbf?=r
*/ (qc!-Isd~[
public void sort(int[] data) { q.hc%s2?
for(int i=data.length/2;i>2;i/=2){ _-yF9g"I
for(int j=0;j insertSort(data,j,i); Hh'14n&W
} }s)&/~6
} =~2 Uv>YG
insertSort(data,0,1); j/` qd(=B
} %` uRUex
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/** V2sB[Mw
* @param data k`J..f9
* @param j k;Ny%%5
* @param i 0f}Q~d=QL
*/ '>lPq tdZ
private void insertSort(int[] data, int start, int inc) { "ih>T^|
int temp; 5Z>pa`_$2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =D"63fP1
} )V =K#MCK
} m^u&g&^
} "GC]E8&>H
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} Z=5}17kA
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快速排序: uP'w.nA&2
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package org.rut.util.algorithm.support; `F`'b)
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import org.rut.util.algorithm.SortUtil; .)pRB7O3
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/** EvardUB)
* @author treeroot ~b<4>"7y.
* @since 2006-2-2 X]^E:'E!
* @version 1.0 {*r$m>HpM
*/ <}'B-k9
public class QuickSort implements SortUtil.Sort{ VNEZBy"F
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/* (non-Javadoc) 3[O =2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nm|m1Z+U
*/ 3ijI2Zy
public void sort(int[] data) { NCpn^m)Q}
quickSort(data,0,data.length-1); bqwW9D(
} Mh/>qyS*2
private void quickSort(int[] data,int i,int j){ W%<]_u[-}
int pivotIndex=(i+j)/2; 0-; P&m!!
file://swap ~ z&A
SortUtil.swap(data,pivotIndex,j); byxehJ6[V
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); ``)1`wx$
if((k-i)>1) quickSort(data,i,k-1); yt#;3
if((j-k)>1) quickSort(data,k+1,j); sTstc+w
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} nX aX=
/** (<~R[sT|
* @param data K1{nxw!`
* @param i 'oeg[
* @param j {gHscj;SM
* @return eeTaF!W
*/ cb&In<q
private int partition(int[] data, int l, int r,int pivot) { )0V]G{QN
do{ F,2#;t4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?-& D'
SortUtil.swap(data,l,r); c5+lm}R ?
} yacGJz^f=
while(l SortUtil.swap(data,l,r); MxA'T(Ay
return l; W]MJ!4
} qvT+d
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} 9nAK6$/
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改进后的快速排序: 5va&N<U
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package org.rut.util.algorithm.support; &UH z
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import org.rut.util.algorithm.SortUtil; 4zDAfi#0
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/** 8VGXw;(Y,d
* @author treeroot >w;W&[
* @since 2006-2-2 0$Db@
* @version 1.0 {+mkXp])R
*/ :=7;P)
public class ImprovedQuickSort implements SortUtil.Sort { XFAt\g
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private static int MAX_STACK_SIZE=4096; j?) `VLZ
private static int THRESHOLD=10; <Y'YpH`l
/* (non-Javadoc) w3UJw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ShJ3\,K
*/ CPE
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public void sort(int[] data) { )@|Fh@|
int[] stack=new int[MAX_STACK_SIZE]; =C2C~Xd
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int top=-1; 69[k
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int pivot; PY<V
int pivotIndex,l,r; W G r\R
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stack[++top]=0; w:@M|O4`
stack[++top]=data.length-1; <:t\P.
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while(top>0){ A'R sy6
int j=stack[top--]; }H^^v[4
int i=stack[top--]; ^K[tO54
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pivotIndex=(i+j)/2; lhODNWi
pivot=data[pivotIndex]; KA2B3\
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SortUtil.swap(data,pivotIndex,j); f TtMmz
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file://partition k~F/Ho+R&
l=i-1; l@jJJ)Qyk
r=j; .HJHJ.Js8X
do{ B\w`)c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /Loe y
SortUtil.swap(data,l,r); IKpx~
} FeRuZww._J
while(l SortUtil.swap(data,l,r); 64s;6=
SortUtil.swap(data,l,j); EmoU7iy
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if((l-i)>THRESHOLD){ bx6}zkf&
stack[++top]=i; \~1+T
stack[++top]=l-1; 0R%58,R
} x" T^>Q
if((j-l)>THRESHOLD){ ?OdA`!wE
stack[++top]=l+1; 2p[3Ap
stack[++top]=j; {<8#T`I
} =
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] 6B!eB
!
} l0_O<
file://new InsertSort().sort(data); ]gk1h=Y~h
insertSort(data); rnaDo\5
} 9?6$ 2I
/** T ua
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* @param data DZZt%n8J
*/ Z%Kj^
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private void insertSort(int[] data) { *r3vTgo$
int temp; y~ LVK8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y>PbYjuIU
} go5!zSs
} Jz b".A
} AV!
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} +y(h/NcQ
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归并排序: PS1~6f"D
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package org.rut.util.algorithm.support; J6P
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import org.rut.util.algorithm.SortUtil; 9$i`B>C~
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/** 5}ah%
* @author treeroot v$Z1Lh
* @since 2006-2-2 cxdM!L; `
* @version 1.0 (5
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*/ _=#mmZkq
public class MergeSort implements SortUtil.Sort{ 58,mu#yq6
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/* (non-Javadoc) OwUbm0)h^V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B\yid@e
*/ Yd'ke,Je
public void sort(int[] data) { TXv#/@
int[] temp=new int[data.length]; Qg=~n:j
mergeSort(data,temp,0,data.length-1); h08T Q=n
} WH*&MIjAr/
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private void mergeSort(int[] data,int[] temp,int l,int r){ v<W++X7z
int mid=(l+r)/2; ;<H2N0qJ(
if(l==r) return ; /.bwwj_;
mergeSort(data,temp,l,mid); I^=M>_s4
mergeSort(data,temp,mid+1,r); "?-s
Qn
for(int i=l;i<=r;i++){ eH6cBX#P.
temp=data; cB^lSmu5
} Gx($q;8
int i1=l; l:HuG!
int i2=mid+1; e+U o-CO
for(int cur=l;cur<=r;cur++){ jT',+
if(i1==mid+1) xH uyfQLk
data[cur]=temp[i2++]; ipG+qj/=
else if(i2>r) ww,'n{_
data[cur]=temp[i1++]; Ns(F%zkm
else if(temp[i1] data[cur]=temp[i1++]; "H8N,eb2
else J.d<5`7
data[cur]=temp[i2++]; {rQ`#?J}^?
} 8wOPpdc
} wC~Uy%
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} C.O-iBVe#
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改进后的归并排序: Xob##{P3
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package org.rut.util.algorithm.support; ,*US) &x
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import org.rut.util.algorithm.SortUtil; m{|n.b
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/** &/p9+gd
* @author treeroot X*@Sj;|m
* @since 2006-2-2 T28#?Lp6]
* @version 1.0 4j5plm=
*/ :O2N'vl47A
public class ImprovedMergeSort implements SortUtil.Sort { XT)@)c7j
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private static final int THRESHOLD = 10; "-
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/* wB@A?&UY
* (non-Javadoc) fqxMTTg@
* ryPzq}#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TQE_zOa:
*/ S3w? X
public void sort(int[] data) { $l=m?r=
int[] temp=new int[data.length]; CAfG3;
mergeSort(data,temp,0,data.length-1); :v`o="
} [/FIY!nC?
#\qES7We6
private void mergeSort(int[] data, int[] temp, int l, int r) { MeC@+@C
int i, j, k; ~7|z 2L
int mid = (l + r) / 2; cVN|5Y
if (l == r) |yr}g-m
return; :B
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if ((mid - l) >= THRESHOLD) }I"^WCyH
mergeSort(data, temp, l, mid); (Q&Z/Fe
else C'Q} Z_
insertSort(data, l, mid - l + 1); NR" Xn7G
if ((r - mid) > THRESHOLD) >Uz3F7nHi
mergeSort(data, temp, mid + 1, r); P:G^@B3^
else /KkUCq2A
insertSort(data, mid + 1, r - mid); A#}IbcZ|b
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for (i = l; i <= mid; i++) { 8Pq|jK "
temp = data; c;VW>&,B
} SyI#Q[f'_
for (j = 1; j <= r - mid; j++) { \O56!,k
temp[r - j + 1] = data[j + mid]; e([}dz
} 1jR<H$aS
int a = temp[l]; 6v-h!1p{u
int b = temp[r]; ]'Bz%[C)
for (i = l, j = r, k = l; k <= r; k++) { !U@[lBW
if (a < b) { `J;_!~:
data[k] = temp[i++]; x(A.^Yz
a = temp; GKX#-zsh79
} else { IIzdCa{l
data[k] = temp[j--]; n=`UhC
b = temp[j]; EG,RlmcPp
} +]G;_/[2
} ?(Nls.c
} Xh5
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/** 72aj4k]^
* @param data r!+)U#8
* @param l r>Vgo):s
* @param i 3/iGSG`
*/ TWMD f
private void insertSort(int[] data, int start, int len) { 278
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); SKGYmleR
} |,o!O39}>
} c}QjKJ-c
} rxO|k0x^C
} vb# d%1b5
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堆排序: f -bVcWI
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package org.rut.util.algorithm.support; n<MH\.!tM
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import org.rut.util.algorithm.SortUtil; *+5AN306
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/** YDP<
* @author treeroot D+tn<\LF
* @since 2006-2-2 )!'SSVaRs
* @version 1.0 @X:P`?("^
*/ bV}43zI.
public class HeapSort implements SortUtil.Sort{ vI4St;
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/* (non-Javadoc) cJ&%XN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :WE(1!P@
*/ QHOem=B
public void sort(int[] data) { C;_10Rb2ut
MaxHeap h=new MaxHeap(); }{s<!b
h.init(data); jlItPdCv
for(int i=0;i h.remove(); bEbnZ<kz*
System.arraycopy(h.queue,1,data,0,data.length); m3 ,i{
} t68h$u
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private static class MaxHeap{ +`zM^'^$
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void init(int[] data){ &{99Owqg
this.queue=new int[data.length+1]; 0GEK xV\F
for(int i=0;i queue[++size]=data; jvA]EN6$;~
fixUp(size); '6WaG
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} .7"
f~%&oP
} in$Pk$ c
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private int size=0; '~2;WF0h
k? X7h2
private int[] queue; `8EHhN;
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public int get() { :`25@<*u
return queue[1]; -W2 !_
} !ce5pA
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public void remove() { ^8-CUH\
SortUtil.swap(queue,1,size--); s-[ _%
fixDown(1); {x
s{
} ULj'DzlfH
file://fixdown iXeywO2nP
private void fixDown(int k) { zmF_-Q`c
int j; r!'\$(m E
while ((j = k << 1) <= size) { [;%qxAB/_
if (j < size %26amp;%26amp; queue[j] j++; ki48]#p
if (queue[k]>queue[j]) file://不用交换 F.zn:y X5
break; gq!|0
SortUtil.swap(queue,j,k); 1d,;e:=j
k = j; j'g':U
} > -OQk"o
} Nw*
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private void fixUp(int k) { ND77(I$3s
while (k > 1) { BNL Q]
int j = k >> 1; {fmSmD
if (queue[j]>queue[k]) ]25 x X
break; <J!#k@LY]7
SortUtil.swap(queue,j,k); 1*, f
k = j; '(4$h3-gv7
} >d%;+2
} \hoYQK j
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} PQDWY
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} |hk?'WGc`0
0j@gC0xu)|
SortUtil: <KlG#7M>
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package org.rut.util.algorithm; .-Yhpw>f
v47Y7s:uQ
import org.rut.util.algorithm.support.BubbleSort; B_$hi=?TTd
import org.rut.util.algorithm.support.HeapSort; &z8I@^<
import org.rut.util.algorithm.support.ImprovedMergeSort; Us P1bh4
import org.rut.util.algorithm.support.ImprovedQuickSort; E|P
import org.rut.util.algorithm.support.InsertSort; O0[.*xG
import org.rut.util.algorithm.support.MergeSort; 5srj|'ja
import org.rut.util.algorithm.support.QuickSort; Hx5t![g2K!
import org.rut.util.algorithm.support.SelectionSort; ckG`^<
import org.rut.util.algorithm.support.ShellSort; 9)}Nx>K
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/** KeFEUHU
* @author treeroot .Lbu[
* @since 2006-2-2 p;$Vw6W=
* @version 1.0 ?B7n,!&~
*/ PZ06
_
public class SortUtil { KsZd.Rf=@
public final static int INSERT = 1; 2j*;1
public final static int BUBBLE = 2; d[eN#<
public final static int SELECTION = 3; EFSln*|
public final static int SHELL = 4; (r78AZ
public final static int QUICK = 5; 6HeZ<.d&
public final static int IMPROVED_QUICK = 6; m_
>+$uL
public final static int MERGE = 7; OFH!z{*
public final static int IMPROVED_MERGE = 8; ?Zu2=<DU
public final static int HEAP = 9; qD0sD2 x
HE6kt6
public static void sort(int[] data) { f}qR'ognUu
sort(data, IMPROVED_QUICK); av~dH=&=
} &iYy
private static String[] name={ 3z5w}qN]M
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W(.q.Sx>
}; M`{~AIqd(
y(!J8(yA
private static Sort[] impl=new Sort[]{ `IN/1=]5
new InsertSort(), jG~zpZh
new BubbleSort(), Y_S>S(0
new SelectionSort(), t|XQFb@}
new ShellSort(), fR]%:'2k
new QuickSort(), 98O0M#|d
new ImprovedQuickSort(), vG;)(.:
new MergeSort(), {\u=m>2U|
new ImprovedMergeSort(), D}YAu,<K
new HeapSort() d'y\~M9(
}; KicPW}_
vK@t=d
public static String toString(int algorithm){ E3%:7MB
return name[algorithm-1]; SY &)?~C
} KPW2e2{4@
j6@5"wx
public static void sort(int[] data, int algorithm) { A 9\]y%!
impl[algorithm-1].sort(data); &"G4yM
} Vm+e%
vQK*:IRKK
public static interface Sort { +eT1/x0
public void sort(int[] data); U5_1-wV
} eksYIQZ]
&\[3m^L
public static void swap(int[] data, int i, int j) { =XbOY[
int temp = data; xweV8k/
data = data[j]; YI0ubB
data[j] = temp; Rd#V,[d
} B}Lz#'5_
} YhpNeP{A