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。 NW~N}5T
插入排序: 9'fQHwsJ
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package org.rut.util.algorithm.support; ,;EIh}
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import org.rut.util.algorithm.SortUtil; 0M_ DB=
/** ISYXH9V
* @author treeroot H[6:_**?o
* @since 2006-2-2 2,DXc30I
* @version 1.0 ]AINKUI0
*/ SL Ws*aq
public class InsertSort implements SortUtil.Sort{ -$pzl,^ h
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/* (non-Javadoc) ?h$NAL?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !y\'EW3|G
*/ ]0Y4U7W
public void sort(int[] data) { cXA
i k-
int temp; Y>dF5&(kb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &C`Gg<
} 3atBX5
} *D'22TO[[!
} 2~Kgv|09
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} @CpfP;*{w`
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冒泡排序: %v=*Wb\3|
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package org.rut.util.algorithm.support; |)IlMG
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import org.rut.util.algorithm.SortUtil; K?6jXJseb
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/** 6LvW?z(J
* @author treeroot >BV^H.SO|1
* @since 2006-2-2 t;|@o\
* @version 1.0 }fp-pe69z
*/ KN^=i5K+Y
public class BubbleSort implements SortUtil.Sort{ Sgeh %f
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/* (non-Javadoc) R"-mKT}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F8nYV
*/
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public void sort(int[] data) { jte.Xy~g
int temp; wy<\Tg^J
for(int i=0;i for(int j=data.length-1;j>i;j--){ Df}A^G >X
if(data[j] SortUtil.swap(data,j,j-1); ?j'7l=94A
} YDIG,%uv
} &u]8IEv}u
} =-0/k;^
} w x]0p
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} Z&G+bdA>,
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选择排序: |T<_ 5Ik
B?OFe'*
package org.rut.util.algorithm.support; /74QMx?
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import org.rut.util.algorithm.SortUtil; /,BD#|
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/** AgWa{.`f:
* @author treeroot s%vis{2
* @since 2006-2-2 vt/x
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* @version 1.0 5 )A1\
*/ %@<8<6&q
public class SelectionSort implements SortUtil.Sort { jSJqE_ 1
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/* zKyyU}LHH
* (non-Javadoc) SU MrFd~
* P:hBt\5B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -{KQr1{5UM
*/ /?wtF4
public void sort(int[] data) { 1m'k|Ka
int temp; GiJ *Wp
for (int i = 0; i < data.length; i++) { +UC G0D
int lowIndex = i; xI{)6t$`
for (int j = data.length - 1; j > i; j--) { ~Sdb_EZ
if (data[j] < data[lowIndex]) { $6#CqWhI
lowIndex = j; bYcV$KJk
} gl~ecc
} %{7|1>8
SortUtil.swap(data,i,lowIndex); !-g{[19\
} $1SPy|y
} UgRhWV~f0
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} -r!. 9q
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Shell排序: FK^p")i
m1j*mtu
package org.rut.util.algorithm.support; Z
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import org.rut.util.algorithm.SortUtil; Qu"8(Jk/
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/** t;){D:]k
* @author treeroot :vYYfs&
* @since 2006-2-2 ?#Ge.D~u
* @version 1.0 [Hx0`Nc K
*/ ;Y)w@bNt@
public class ShellSort implements SortUtil.Sort{ Z3%}ajPu[
u :}%xD6
/* (non-Javadoc) 36.Z0Z1'F>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZVW'>M7.
*/ MO[2~`,Q!
public void sort(int[] data) { ,1hxw<sNR
for(int i=data.length/2;i>2;i/=2){ H
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for(int j=0;j insertSort(data,j,i); HsxVZ.dS
} &g#@3e1>
} C:GK,?!Jn'
insertSort(data,0,1); t1]K<>g
} k3~}7]O)
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/** aasoW\UG
* @param data -<6\1J
* @param j -Mip,EO
* @param i j*d
yp
*/ CZ8KEBl
private void insertSort(int[] data, int start, int inc) { Cwr~HY
int temp; ?}qttj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K~uXO
} .n TwPrG
} 9X[kEl
} Yy5h"r
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} :X"?kK0 V
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快速排序: ih)zG
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package org.rut.util.algorithm.support; ?yZ+D z\
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import org.rut.util.algorithm.SortUtil; {]*c29b>
t9nqu!);
/** :v0U|\j8/V
* @author treeroot -M~8{buxv
* @since 2006-2-2 Gq+z /Be
* @version 1.0 R$v[!A+:'
*/ 9FoHD
public class QuickSort implements SortUtil.Sort{ r`=+ L-!
j
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/* (non-Javadoc) Yf:IKY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZLc -RM
*/ 7jxslI&F
public void sort(int[] data) { @_-hk|Nl@
quickSort(data,0,data.length-1); *RDn0d[
} m];]7uB5=
private void quickSort(int[] data,int i,int j){ c7<wZ
int pivotIndex=(i+j)/2; }bs+-K
file://swap x%s-+&
SortUtil.swap(data,pivotIndex,j); Gp1?iX?ml
rT M}})81
int k=partition(data,i-1,j,data[j]); 1=r#d-\tR
SortUtil.swap(data,k,j); &@G:G(
if((k-i)>1) quickSort(data,i,k-1); R(!s
if((j-k)>1) quickSort(data,k+1,j); nR7d4)
^tqzq0
} Vl5`U'^qx
/** U GD2
* @param data 2-&k^Gl!:
* @param i 8N!b>??
* @param j =w;F<M|Y
* @return Bs13^^hu
*/ ?*2CpM&l
private int partition(int[] data, int l, int r,int pivot) { 5k!g%sZ
do{ b $'FvZbk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "&%I)e^
SortUtil.swap(data,l,r); *Tas`WA
} ht7l- AK
while(l SortUtil.swap(data,l,r); qUh2hz:
return l; ;QWIsVz
} ;ZH3{
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} qT,Te
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改进后的快速排序: lAi6sPG)0
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package org.rut.util.algorithm.support; $()5VMb
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import org.rut.util.algorithm.SortUtil; 1jCLO}
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/** ]*vdSr-J
* @author treeroot 6tB+J F
* @since 2006-2-2 R,gR;Aarw
* @version 1.0 t|a2;aq_
*/ 3cFf#a #
public class ImprovedQuickSort implements SortUtil.Sort { !5.8]v
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private static int MAX_STACK_SIZE=4096; M}d_I+
private static int THRESHOLD=10; 4y)P>c
/* (non-Javadoc) wr5AG<%(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &atuK*W>
*/ prYs
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public void sort(int[] data) { lH-/L(h2
int[] stack=new int[MAX_STACK_SIZE]; Q7*SE%H
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int top=-1; ?
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int pivot; |L-]fjBbF
int pivotIndex,l,r; 5Eg1Q
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stack[++top]=0; EwuO&q
stack[++top]=data.length-1; 8s"%u )
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while(top>0){ ~T9/#-e>BF
int j=stack[top--]; U[SaY0Z
int i=stack[top--]; ?6Jx@ Sh
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pivotIndex=(i+j)/2; X<i^qoV
pivot=data[pivotIndex]; w,w{/T+B
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SortUtil.swap(data,pivotIndex,j); :axRoRg
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file://partition Nd`%5%'::
l=i-1; GKOD/,
r=j; -}=i 04^
do{ mFg<dTx0c8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DBPRGQ
SortUtil.swap(data,l,r); uZc`jNc\
} >*]Hq.&8
while(l SortUtil.swap(data,l,r); '>&^zgr
SortUtil.swap(data,l,j); ?!9)q.bW
#1`-*.u
if((l-i)>THRESHOLD){ }lh I\q
stack[++top]=i; eAXc:222
stack[++top]=l-1; =+ytTQc*ot
} /`f^Y>4gD
if((j-l)>THRESHOLD){ #.it]Nv{
stack[++top]=l+1; ]e^c=O`$
stack[++top]=j; ,RJtm%w
} >=RmGS
(^@ra$.
} 1nQWW9i
file://new InsertSort().sort(data); #cnq(S=.
insertSort(data); z54EG:x.7^
} *RXbc~
H
/** 'qjeXqGH$
* @param data I|>^1kr8w
*/ $UgA0]qn
private void insertSort(int[] data) { LNrX;{ Z
int temp; fJ/e(t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OlAs'TE^
} 9A}# 6
} 5"HVBfFk
} b
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} y9_K, g
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归并排序: )Z(TCJ~~!
lz"OC<D}(
package org.rut.util.algorithm.support; 6xWe=QGE
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import org.rut.util.algorithm.SortUtil; >iD )eB
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/** zY,r9<I8_x
* @author treeroot oN{Z+T :
* @since 2006-2-2 11<Qxu$rL
* @version 1.0 I3,= 0z
*/ &m|wH4\
public class MergeSort implements SortUtil.Sort{ ;\lW5ZX
1jN-4&
/* (non-Javadoc) ]T;EdK-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sB^<6W!`(
*/ 3~}uqaGt
public void sort(int[] data) { KcK>%%
int[] temp=new int[data.length]; `0P$#5?
mergeSort(data,temp,0,data.length-1); t: #6sF
} F'B8v3
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private void mergeSort(int[] data,int[] temp,int l,int r){ LM7$}#$R
int mid=(l+r)/2;
-TM0]{
if(l==r) return ; 9T|IvQK8
mergeSort(data,temp,l,mid); %kB8'a3
mergeSort(data,temp,mid+1,r); 1_\;- !t
for(int i=l;i<=r;i++){ mf}O-Igte
temp=data; 6ek;8dL
} |4T!&[r
int i1=l; AgFVv5
int i2=mid+1; A8pIs
for(int cur=l;cur<=r;cur++){ =|I>G?g-
if(i1==mid+1) 5m9*85Ib
data[cur]=temp[i2++]; _io+YzS
else if(i2>r) r6&54f
data[cur]=temp[i1++]; ADpmvW f?
else if(temp[i1] data[cur]=temp[i1++]; o(S{VGi,
else M@?xa/E64
data[cur]=temp[i2++]; hir4ZO%Zt
} kAu+zX>S+
} >y[oP!-|P
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} .h9l7
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改进后的归并排序: 'B@e8S)y
G}FIjBE
package org.rut.util.algorithm.support; (;q\}u
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import org.rut.util.algorithm.SortUtil; |fSe>uVZ
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/** k'#(1(xj
* @author treeroot {%IE xPJ
* @since 2006-2-2 ]p;FZ4-T
* @version 1.0 >2]JXLq
*/ '1$!jmY
public class ImprovedMergeSort implements SortUtil.Sort { h=(DX5:A
e_V O3"
private static final int THRESHOLD = 10; 4H|(c[K;
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/* 55;g1o}}f
* (non-Javadoc) ]ut5S>,"
* dw TMq*e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3"G>>nC&
*/ [+OnV&
public void sort(int[] data) { 2AtLyN'.
int[] temp=new int[data.length]; qQ0cJIISb\
mergeSort(data,temp,0,data.length-1); QK+(g,)_86
} Op>%?W8/UF
bd<m%OM""
private void mergeSort(int[] data, int[] temp, int l, int r) { 04*6(L)h*
int i, j, k; (sQr X{~
int mid = (l + r) / 2; bzvh%RsW
if (l == r) {'AWZ(
return; >-O/U5<!
if ((mid - l) >= THRESHOLD) !vk|<P1
mergeSort(data, temp, l, mid); #vzEu
)Ul
else 1?| flK
insertSort(data, l, mid - l + 1); P9S2?Q
if ((r - mid) > THRESHOLD) wN2QK6Oc
mergeSort(data, temp, mid + 1, r); I8QjKI (
else ;L,mBQB?0b
insertSort(data, mid + 1, r - mid); 9JWa$iBH@
MNg^]tpf
for (i = l; i <= mid; i++) { STglw-TC\
temp = data; aDehqP6vf
} zLF?P3^
for (j = 1; j <= r - mid; j++) { ^mb[j`CCt
temp[r - j + 1] = data[j + mid]; TARXx>
} XfKo A0
int a = temp[l]; 1Jj Y!
int b = temp[r]; ,:%"-`a%
for (i = l, j = r, k = l; k <= r; k++) { e#B#B
if (a < b) { D)@YI.T
data[k] = temp[i++]; B}eA\O4}I
a = temp; meCC?YAB
} else { |Xw/E)jA
data[k] = temp[j--]; '*Almv {
b = temp[j]; &EM\CjKv"
} de]z T^&C
} *A~
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} Vf`7V$sr
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/** I"1;|`L~:
* @param data h1(j2S`:
* @param l E( h<$w8s
* @param i LPwT^zV&N
*/ gh>>Ibf
private void insertSort(int[] data, int start, int len) { ?X-)J=XG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3&x-}y~sg
} rS0DSGDq
} suH&jE$ x
} .^bft P\
} .@"q$\
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堆排序: 5~.ZlGd
Z--@.IYoJ
package org.rut.util.algorithm.support; KK,Z"){
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import org.rut.util.algorithm.SortUtil; 4G@nZn
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/** X]loJoM9
* @author treeroot DOz\n|8S
* @since 2006-2-2 {ls+dx/
* @version 1.0 p7ir*r/2
*/ Fxc)}i`
public class HeapSort implements SortUtil.Sort{ \]9.zlB
hfcIvs/!
/* (non-Javadoc) 5/QRL\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /j"sS2$U
*/ 3M0+"l(X
public void sort(int[] data) { ?%O3Oi Xz
MaxHeap h=new MaxHeap(); kGkA:g:
h.init(data); y{9~&r
for(int i=0;i h.remove(); 0GDvwy D1
System.arraycopy(h.queue,1,data,0,data.length); nJ?^?M'F%
} $hR)i
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private static class MaxHeap{ O g%U
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void init(int[] data){ J!ntXF
this.queue=new int[data.length+1]; XI Jlc~2
for(int i=0;i queue[++size]=data; ?8,%LIQ?
fixUp(size); OOBhbpg!D
} '<iK*[NW
} nH !3(X*
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private int size=0; OndhLLz
_)$PKOzbb
private int[] queue; QIB>rQCceo
hIJ)MZU|
public int get() { 7:NmCpgL!
return queue[1]; 0(8H;T
} ":Edu,6O
V2|3i}V"
public void remove() { rSP_:}
SortUtil.swap(queue,1,size--); B6}FIg)
fixDown(1); 7?"y{R>E
} 5wC* ?>/
file://fixdown s|bM%!$1
private void fixDown(int k) { W&"|}Pi/
int j; Uf*EJ1Ei
while ((j = k << 1) <= size) { nL]^$J$
if (j < size %26amp;%26amp; queue[j] j++; L3(^{W]|
if (queue[k]>queue[j]) file://不用交换 /"qcl7F
break; ?lCd{14Mkh
SortUtil.swap(queue,j,k); ! o,5h|\
k = j; C.!_]Pxs
} 2_QN&o ~h
} IxDWJ#k
private void fixUp(int k) { oCi
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while (k > 1) { >
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int j = k >> 1; Ja^ 5?Ar|
if (queue[j]>queue[k]) g+zJ?
break; x;BbTBc>
SortUtil.swap(queue,j,k); ^%oUmwP<$
k = j; cX2^wu
} cm>E[SHr
} zjX7C~h^Q
1ywU@].6J]
} jkrx]`A{~
@u4=e4eF`
} U!q[e`B
i&+w _hD
SortUtil: q(z7~:+qNr
#'o7x'n^
package org.rut.util.algorithm; Sg*0[a3z
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import org.rut.util.algorithm.support.BubbleSort; EH9Hpo
import org.rut.util.algorithm.support.HeapSort; %EbiMo ]3B
import org.rut.util.algorithm.support.ImprovedMergeSort; L0h
G
import org.rut.util.algorithm.support.ImprovedQuickSort; W 5DbFSgB
import org.rut.util.algorithm.support.InsertSort; =LH}YUmd
import org.rut.util.algorithm.support.MergeSort; q7]>i!A
import org.rut.util.algorithm.support.QuickSort; @6xGJ,s
import org.rut.util.algorithm.support.SelectionSort; \MYU<6{u
import org.rut.util.algorithm.support.ShellSort; @]
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/** j64 4V|z
* @author treeroot B1T5f1;uY
* @since 2006-2-2 D,W\ gP/h%
* @version 1.0 w{7ji}
*/ M23&<}Q8
public class SortUtil { [Z}B"
public final static int INSERT = 1; .;Y
x*]
public final static int BUBBLE = 2; bejGfc
public final static int SELECTION = 3; Z$2L~j"=!
public final static int SHELL = 4; LdTIR]
public final static int QUICK = 5; I"Q<n[g0'
public final static int IMPROVED_QUICK = 6; 5j[#'3TSU
public final static int MERGE = 7; Kmry=`=A
public final static int IMPROVED_MERGE = 8; QPg2Y<2
public final static int HEAP = 9; ckwF|:e7*
5d
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public static void sort(int[] data) { ]tVl{" .{
sort(data, IMPROVED_QUICK); 1Ii| {vR
} OlcP(
private static String[] name={ %-^}45](q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x0x $ 9
}; Qb@eK$wo}
3q~Fl=|.o
private static Sort[] impl=new Sort[]{ [@.B4p
new InsertSort(), Mvof%I
new BubbleSort(), -Cj_B\
new SelectionSort(), [h", D5
new ShellSort(), v>I<|
new QuickSort(), ?M"HXu
new ImprovedQuickSort(), <9 },M
new MergeSort(), 3}4#I_<$F@
new ImprovedMergeSort(), nVTM3Cz
new HeapSort() d^SE)/j
}; ,kE=TR.|
SKxe3
public static String toString(int algorithm){ 3/tJDb5
return name[algorithm-1]; `@\^m_!}
} u%aFb*
44Qk;8*
public static void sort(int[] data, int algorithm) { RUc \u93n
impl[algorithm-1].sort(data); q]ZSjJ
} Iv1c4"
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public static interface Sort { ;&`:|Hf*
public void sort(int[] data);
S-P{/;c@
} ^je528%H
XW:%vJu^`
public static void swap(int[] data, int i, int j) { }z{wQ\
int temp = data; @ay|]w
data = data[j]; UC#"=Xd4
data[j] = temp; ReqE?CeV
} E@]sq A
} V
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