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。 x ?^c:`.
插入排序: wB9IP{Pf
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package org.rut.util.algorithm.support; ?b#?Vz
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import org.rut.util.algorithm.SortUtil;
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/** q{U -kuui
* @author treeroot te6[^_k
* @since 2006-2-2 ,<EmuEw |
* @version 1.0 H5&>Eny
*/ "3\RJ?eW:S
public class InsertSort implements SortUtil.Sort{ `t6lnO
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/* (non-Javadoc) "VT5WFj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P* aD2("Z
*/ EAY9~b6~c
public void sort(int[] data) { lg8~`96
int temp; T^sxR4F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YvYav d
} >F+:ej
} o8s&n3mY}y
} `4k;`a
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} V ?_%Y<|L
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冒泡排序: +ixDB0"\
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package org.rut.util.algorithm.support; >,] #~d
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import org.rut.util.algorithm.SortUtil; PU'v o4
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/** Gi<f/xQk>
* @author treeroot vi5~ Rd`
* @since 2006-2-2 5Q%#Z
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* @version 1.0 Y\op9Fw
*/ E_H1X'|qS4
public class BubbleSort implements SortUtil.Sort{ R=e`QMq
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/* (non-Javadoc) ?-i|f_`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c<H4rB
*/ 3zl!x
public void sort(int[] data) { _p_F v>>:
int temp; 3/ [=
for(int i=0;i for(int j=data.length-1;j>i;j--){ KDXo9FzF
if(data[j] SortUtil.swap(data,j,j-1); Iewq?s\Fo
} wZC'BLD
} ~f@<]
} BMdr.0
} #t/Q4X
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} Y4{`?UM&h
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选择排序: #zy%B
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package org.rut.util.algorithm.support; C$tSsw?A
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import org.rut.util.algorithm.SortUtil; hCDI;'ls
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/** 7q\c\qL
* @author treeroot NNfCJ|
* @since 2006-2-2 nuC K7X
* @version 1.0 \O0fo^+U,,
*/ r[,KE.^6~#
public class SelectionSort implements SortUtil.Sort { @"~\[z5
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/* lyi}q"Kn*;
* (non-Javadoc) !e7vc[N
* E$1^}RGT)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Gv~e!a8
*/ Ym6ec|9;
public void sort(int[] data) { (8*lLZ
int temp; `j(+Y
for (int i = 0; i < data.length; i++) { T2->
int lowIndex = i; $?s^HKF~
for (int j = data.length - 1; j > i; j--) { s{IoL_PJP
if (data[j] < data[lowIndex]) { aQG#bh [
lowIndex = j;
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} B@=Yj_s
} O<E0L&4-&
SortUtil.swap(data,i,lowIndex); yp4G"\hN9
} $YC~02{
} $e_ps~{7$
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} g|zK%tR_P
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Shell排序: zm"\D
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package org.rut.util.algorithm.support; Cn55%:
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import org.rut.util.algorithm.SortUtil; OMZT\$9yT
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/** g}D$`Nx:
* @author treeroot N<{`n;
* @since 2006-2-2 BmM,vllO
* @version 1.0 7^iAc6QSy3
*/ *Q>:|F[vM
public class ShellSort implements SortUtil.Sort{ j*zK"n
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/* (non-Javadoc) j"V$J8)[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t#q>U%!
*/ "h2Ny#
public void sort(int[] data) { IF:M_
for(int i=data.length/2;i>2;i/=2){ 6Te}"t>
for(int j=0;j insertSort(data,j,i); m7"f6zSo(
} c`+ITNV
} "tR.'F[n4P
insertSort(data,0,1); zb" hy"hKw
} Qx6/QaS?
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/** moR]{2Cd{
* @param data Lm?*p>\Q
* @param j G4}q*&:k
* @param i wgyO%
*/ V4-=Ni]k
private void insertSort(int[] data, int start, int inc) { ]R@G5d
int temp; 2tv40(M:<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `#f=&S?k
} caP
} |z'?3?,~
} .#@D n(
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} (*ng$zZ$
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快速排序: [!le 9aNg
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package org.rut.util.algorithm.support; CwvNxH#LVu
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import org.rut.util.algorithm.SortUtil; W,~1KUTc
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/** b8>9mKs
* @author treeroot ddP,_.0
* @since 2006-2-2 a%!XLyq
* @version 1.0 ^{s0d+@{
*/ ~Z2eQx
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public class QuickSort implements SortUtil.Sort{ PR?clg=z
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/* (non-Javadoc) [S:)UvB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {*U:Wm<
*/ cnthtv+(~
public void sort(int[] data) { 9ojhI=:
quickSort(data,0,data.length-1); As|/
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} sQZ8<DpB
private void quickSort(int[] data,int i,int j){ f>dkT'4
int pivotIndex=(i+j)/2; ,7P^]V1
file://swap !P$xh
SortUtil.swap(data,pivotIndex,j); \2pFFVT
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int k=partition(data,i-1,j,data[j]); E5 oD|'=WA
SortUtil.swap(data,k,j); jyhzLu
if((k-i)>1) quickSort(data,i,k-1); / yi :Q0
if((j-k)>1) quickSort(data,k+1,j); a1SOC=.M;
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} $0}bi:7
/** rbPs~C-[
* @param data H4NEB1TO>
* @param i )F9r?5}v4x
* @param j %,et$1`g
* @return 3+3m`%G
*/ Y}uQ`f
private int partition(int[] data, int l, int r,int pivot) { 4P!DrOB
do{ %wW5)Y I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); AnY)T8w
SortUtil.swap(data,l,r); /zf>>O`
} v4_OUA>z,
while(l SortUtil.swap(data,l,r); h)8+4?-4I
return l; AJfi,rFPg
} `uVW<z{l
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} cl{W]4*$
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改进后的快速排序: X3{1DY3@u
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package org.rut.util.algorithm.support; U!:!]DX(
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import org.rut.util.algorithm.SortUtil; _M[[vXH
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/** q_y,j&
* @author treeroot DXW?;|8)O
* @since 2006-2-2 8$ZSF92C
* @version 1.0 1lyOp
*/ I<./(X[H:#
public class ImprovedQuickSort implements SortUtil.Sort { ^r*%BUU9]%
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private static int MAX_STACK_SIZE=4096; / 7X dV
private static int THRESHOLD=10; ~e77w\Q0
/* (non-Javadoc) VhFRh,J(T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =veOVv[Q&/
*/ noNF;zT
public void sort(int[] data) { AH'4H."o/9
int[] stack=new int[MAX_STACK_SIZE]; A}bHfn|
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int top=-1; 7.
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int pivot; ynZ[c8.
int pivotIndex,l,r; ;K\N
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stack[++top]=0; ?lDcaI>+n
stack[++top]=data.length-1; S~Iw?SK3
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while(top>0){ 0j!ke1C&C
int j=stack[top--]; 8V|jL?a~
int i=stack[top--]; ;Z1U@2./
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pivotIndex=(i+j)/2; !Vr45l
pivot=data[pivotIndex]; =j+oKGkoCa
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SortUtil.swap(data,pivotIndex,j); 6~h1iY_~
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file://partition YD46Z~$
l=i-1; _8b]o~[Z+
r=j; {IPn\Bka
do{ ;q,)NAr&
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bq3fiT9
SortUtil.swap(data,l,r); BQ9`DYI b
} bI]UO)
while(l SortUtil.swap(data,l,r); \As oeeF
SortUtil.swap(data,l,j); HS6Imi
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if((l-i)>THRESHOLD){ 2Cd
--W+=
stack[++top]=i; 6"Lsui??
stack[++top]=l-1; ~26s7S}
} %rDmW?T
if((j-l)>THRESHOLD){ '+!S|U,{
stack[++top]=l+1; O/Mz?$8J
stack[++top]=j; J4[x,(iq(
} x1:Pj
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} r($_>TS&"
file://new InsertSort().sort(data); foz5D9sQ
insertSort(data); kyx SIQ^
} 9VUm=Z#`
/** n`m_S
* @param data L_U3*#Zdz7
*/ c7g.|R
private void insertSort(int[] data) { X4} `>
int temp; 1R2o6`_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /%uZKGP
} c. TB8Ol
} /;<e.
} _7=pw5[
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} WE 5"A|
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归并排序: loeLj4""
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package org.rut.util.algorithm.support; O,=Q1*c,&
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import org.rut.util.algorithm.SortUtil; TDl!qp @
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/** lbKv
* @author treeroot Tw`c6^%^y
* @since 2006-2-2 iM/*&O}
* @version 1.0 tB ,.
*/ T Oco({/_/
public class MergeSort implements SortUtil.Sort{ fXu~69_
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/* (non-Javadoc) yZ;k@t_WRD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _b!;(~@p
*/ xH"W}-#[
public void sort(int[] data) { iM?I
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int[] temp=new int[data.length]; eg$5z
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mergeSort(data,temp,0,data.length-1); {{.sEi*
} Y( 1L>4
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6bbZ<E5At
int mid=(l+r)/2; ,5eH2W
if(l==r) return ; ;&+[W(7Sy
mergeSort(data,temp,l,mid); Sv~YFS :oy
mergeSort(data,temp,mid+1,r); @ate49W
for(int i=l;i<=r;i++){ <+?
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temp=data; 2fkIdy#n@
} ~T>jBYI0
int i1=l; z*M}=`M$
int i2=mid+1; :]B%
>*;}
for(int cur=l;cur<=r;cur++){ P"R97#C
if(i1==mid+1) _.d}lK3$2
data[cur]=temp[i2++]; \3H<z@;
else if(i2>r) (30<oE{
data[cur]=temp[i1++]; t$]&,ucW#
else if(temp[i1] data[cur]=temp[i1++]; i{tTUA
else |D;_:x9
data[cur]=temp[i2++]; ,J~,ga~
} CB*`
} O+G~Qp0b>
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} 6keP':bt
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改进后的归并排序: N,j>;x3xT
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package org.rut.util.algorithm.support; H$~M`Y9I~
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import org.rut.util.algorithm.SortUtil; O`wYMng)
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/** a.
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* @author treeroot xa87xX=a
* @since 2006-2-2 CrnB{Z4L
* @version 1.0 G$;>ueM
*/ QD$}-D[
public class ImprovedMergeSort implements SortUtil.Sort { P]pmt1a
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private static final int THRESHOLD = 10; E$]a?uA:
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/* eaV3)uP
* (non-Javadoc) cT/3yf
* gB(9vhj$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ey r5jXt%;
*/ -Bo86t)F
public void sort(int[] data) { *'Z-OY<V
int[] temp=new int[data.length]; wrH7 pd
mergeSort(data,temp,0,data.length-1); jZXVsd
} -M"IVyy@
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private void mergeSort(int[] data, int[] temp, int l, int r) { wXc,F D$
int i, j, k; ~?FK ; (
int mid = (l + r) / 2; )-0[ra]
if (l == r) eQ$N:]
return; ' 2>l
if ((mid - l) >= THRESHOLD) 84iJ[Fq{
mergeSort(data, temp, l, mid); Z:I*y7V-
else }Q/G
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insertSort(data, l, mid - l + 1); :&Qb>PH[
if ((r - mid) > THRESHOLD) 'n~fR]h}
mergeSort(data, temp, mid + 1, r); sS
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else |WB"=PE
insertSort(data, mid + 1, r - mid); WI,40&<
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for (i = l; i <= mid; i++) { uVN.=
temp = data; >HE,'
} tY{;
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for (j = 1; j <= r - mid; j++) { ,/~[S
temp[r - j + 1] = data[j + mid]; )yHJ[
} @(Z( /P;:
int a = temp[l]; M[A-1]'
int b = temp[r]; Oc7 >S.1
for (i = l, j = r, k = l; k <= r; k++) { [!^cd%l
if (a < b) { ows^W8-w
data[k] = temp[i++]; 6H0W`S0a
a = temp; R"NGJu9
} else { >OT\~C
data[k] = temp[j--]; LRWOBD
b = temp[j]; 5!<o-{J[(=
} #-,g&)`]
} %>i@F=O2<
} zCBplb
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/** rxQ<4
* @param data ICk(z~D~
* @param l WS5A Y @(~
* @param i *]5z^>
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*/ *%3oyWwCd
private void insertSort(int[] data, int start, int len) { ,NDh@VYe
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :#WEx_]
} >b'w'"
} $)Wb#B
} @\ }sb]
} TfL4_IAG.
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堆排序: Y =9j2 ]t
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package org.rut.util.algorithm.support; ^b=XV&{q
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import org.rut.util.algorithm.SortUtil; (s088O
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/** l1}R2lSEO
* @author treeroot jA,|JgN|n
* @since 2006-2-2 QeL{Wa-2F
* @version 1.0 58J_ w X
*/ IK3qE!,&U
public class HeapSort implements SortUtil.Sort{ YX_vv!-]
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/* (non-Javadoc) i (0hvV>'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > =Jsv
*/ b7!UZu]IEv
public void sort(int[] data) { $R";
MaxHeap h=new MaxHeap(); Z9xR
h.init(data); ^1.7Juvb
for(int i=0;i h.remove(); $:e)$Xnn-
System.arraycopy(h.queue,1,data,0,data.length); dN<5JQql
} *E}Oh
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private static class MaxHeap{ }%+qP+O\
]/_G-2.R
void init(int[] data){ bK<}0Ja[
this.queue=new int[data.length+1]; W<Z$YWr
for(int i=0;i queue[++size]=data; Evkt_vvf
fixUp(size); AVv#\JrRW
} -?5$ PH
} V}SyD(8~
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private int size=0; pisB,wP$2
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private int[] queue; UQ~4c,
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public int get() { 6b<+8w
return queue[1]; V!xwb:J
} k}zd'
/b
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public void remove() { <m0{'xw
SortUtil.swap(queue,1,size--);
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fixDown(1); J\{$ot
} t:=k)B
file://fixdown b_=8!Q.:
private void fixDown(int k) { 87<9V.s2
int j; Y\p$SN
while ((j = k << 1) <= size) { 1ef'7a7e8
if (j < size %26amp;%26amp; queue[j] j++; <s}|ZnGE
if (queue[k]>queue[j]) file://不用交换 /EU; ?O
break; o%`npi1y
SortUtil.swap(queue,j,k); |1l&@#j!2
k = j; ~{M@?8wi
} wbi3lH:;
} 9U^$.Lb
private void fixUp(int k) { Us-A+)r*!
while (k > 1) { ]'k[u
int j = k >> 1; -72j:nk
if (queue[j]>queue[k]) X>t3|h
break; M35Ax],:^
SortUtil.swap(queue,j,k); y3IWfiz>/d
k = j; ;%zC@a~{
} 3t(c_:[%
} r]LCvsVa
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} p538r[f<
TV:<TR
} 5H
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SortUtil: ")UwkF
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package org.rut.util.algorithm; k$"d^*R
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import org.rut.util.algorithm.support.BubbleSort; )D@~|j:
import org.rut.util.algorithm.support.HeapSort; (q;bg1\UK
import org.rut.util.algorithm.support.ImprovedMergeSort; ;hDa@3|]34
import org.rut.util.algorithm.support.ImprovedQuickSort; <+U|dX
import org.rut.util.algorithm.support.InsertSort; _D;@v?n6!O
import org.rut.util.algorithm.support.MergeSort; MDO$m g
import org.rut.util.algorithm.support.QuickSort; PuCc2'#
import org.rut.util.algorithm.support.SelectionSort; )&W**!(C
import org.rut.util.algorithm.support.ShellSort; 'Pd(\$ZY
fi%r<]@
/** p{tK_ZBy]c
* @author treeroot %s=Dj2+
* @since 2006-2-2 ERMa# L
* @version 1.0 l]LxL
*/ >)nS2bOE
public class SortUtil { t;q7t!sC]
public final static int INSERT = 1; nvq3*
public final static int BUBBLE = 2; #%,RJMv
public final static int SELECTION = 3; G=/k>@Di
public final static int SHELL = 4;
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public final static int QUICK = 5; XEH}4;C'{
public final static int IMPROVED_QUICK = 6; rNN
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public final static int MERGE = 7; uGH?N
public final static int IMPROVED_MERGE = 8; 9";sMB}W*
public final static int HEAP = 9; =?Fkn4t
nHOr AD|&
public static void sort(int[] data) { IQ!Fv/I<
sort(data, IMPROVED_QUICK); :7.Me;RA
} ,?cH"@RJ
private static String[] name={ }%!tT\8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^V*-1r1
}; a|j%n
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private static Sort[] impl=new Sort[]{ fRZ KEIyk
new InsertSort(), @I3eK^#|P
new BubbleSort(), q1VH5'p@
new SelectionSort(), b{M7w
new ShellSort(), f{#j6wZM
new QuickSort(), Gctsp2ndW
new ImprovedQuickSort(), |9K<-yD
new MergeSort(),
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