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。 xI.Orpw
插入排序: CF4Oh-f
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package org.rut.util.algorithm.support; qK9L+i
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import org.rut.util.algorithm.SortUtil; kR`6s
/** gQ[]
* @author treeroot 97:t29N
* @since 2006-2-2 }QX2:a
* @version 1.0 D[>XwL
*/ IS5.i95m
public class InsertSort implements SortUtil.Sort{ mG}^'?^K
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/* (non-Javadoc) *_2O*{V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GY0XWUlC
*/ UY }9
public void sort(int[] data) { X\c1q4oB[
int temp; rzYobOKd#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XudH
} FOlA* U4U
} Qwp\)jVi
} -@gJqoo>
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} rE
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冒泡排序: P!)7\.7
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package org.rut.util.algorithm.support; $~w@0Yl
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import org.rut.util.algorithm.SortUtil; VrnK)za*H
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/** s&_IWala
* @author treeroot +[ZMrTW!0C
* @since 2006-2-2 N>cp>&jV
* @version 1.0 oneSgJ
*/ Xd19GP!
public class BubbleSort implements SortUtil.Sort{ [pRVZV
: e0R7sj
/* (non-Javadoc) G]m[S-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y7b,td1
*/ ;S{Ld1;
public void sort(int[] data) { ]$?zT`>(F
int temp; m"?'hR2
for(int i=0;i for(int j=data.length-1;j>i;j--){ \U<F\i
if(data[j] SortUtil.swap(data,j,j-1); A^= Hu,"e
} U:pLnNp`
} Vx\#+)4
} C,VqT6E<
} O_s9
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} )=,9`+Zta
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选择排序: N#-kk3!Z;
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package org.rut.util.algorithm.support; c^dl+-{Mc
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import org.rut.util.algorithm.SortUtil; w|n?m
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/**
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* @author treeroot kDceBs s
* @since 2006-2-2 Jq?^8y
* @version 1.0 S7#^u`'Q_^
*/ yaYIgG
public class SelectionSort implements SortUtil.Sort {
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/* x#}j3"
PP
* (non-Javadoc) um_M}t{
* !w;A=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v#<+n{B
*/ ./BP+\)lO
public void sort(int[] data) { *~t$k56
int temp; (X`t"*y"
for (int i = 0; i < data.length; i++) { *`pec3"
int lowIndex = i; 3MBz
for (int j = data.length - 1; j > i; j--) { 8^f[-^%
if (data[j] < data[lowIndex]) { pn_gq~5ng
lowIndex = j; z*k3q`=>
} Ie`SWg*WL
} Y(G*Yi?;
SortUtil.swap(data,i,lowIndex); O7<V@GL+
} Ygkd~g
} fXXm@tMx>
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} h.s<0.
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Shell排序: ^&G O4u
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package org.rut.util.algorithm.support; BB73'W8y
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import org.rut.util.algorithm.SortUtil; zm)CfEF
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/** +G=C~X
* @author treeroot 8L9S^ '
* @since 2006-2-2 2sd=G'7!
* @version 1.0 b09#+CH?
*/ RAx]Sp
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public class ShellSort implements SortUtil.Sort{ r^o}Y
\Dsl7s=
/* (non-Javadoc) as!|8JE`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kjca>/id
*/ in;+d~?
public void sort(int[] data) { r<f-v_bxF
for(int i=data.length/2;i>2;i/=2){ ~E:/oV:4 >
for(int j=0;j insertSort(data,j,i); i7w}`vs
} n4d(`
} ~BYEeUo;%v
insertSort(data,0,1); Rp@}9qijb
} k f K"i
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/** 0 *Yivx6
* @param data !PP?2Ax
* @param j Nm:|C 3_I
* @param i $gD(MKR)~
*/ ;Wrd=)Ka
private void insertSort(int[] data, int start, int inc) { s7)# NT2
int temp; 8-g$HXqs_#
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xzf)_ <
} B8#f^}8
} D<L{Z[
} h|/*yTuN.y
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} ea[a)Z7#
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快速排序: ()IgSj?,
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package org.rut.util.algorithm.support; I8pxo7(-
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import org.rut.util.algorithm.SortUtil; r Xk
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/** 8#JyK+NU
* @author treeroot `9"jHw`D
* @since 2006-2-2 >8HRnCyp/
* @version 1.0 +w}%gps
*/ P9HPr2
public class QuickSort implements SortUtil.Sort{ * jNu?$
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/* (non-Javadoc) E=U^T/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V@s/]|rf,
*/ gdn,nL`dP
public void sort(int[] data) { !Q/O[6
quickSort(data,0,data.length-1); PL B=%[
} ++RmaZ
private void quickSort(int[] data,int i,int j){ _@3O`
int pivotIndex=(i+j)/2; 5<ya;iK
file://swap #(}_2x5
SortUtil.swap(data,pivotIndex,j); b:d.Lf{y7
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int k=partition(data,i-1,j,data[j]); xx2:5
SortUtil.swap(data,k,j); 9Qm{\
if((k-i)>1) quickSort(data,i,k-1); `fE:5y
if((j-k)>1) quickSort(data,k+1,j); `];[T=
L$07u{Q
} 9!OCilG
/** 5suSR;8
* @param data hdDI%3vk3
* @param i O#Ax P}
* @param j ]$k
m
* @return 3G0\i!*t
*/ [8g\pPQ
private int partition(int[] data, int l, int r,int pivot) { C4d1*IQk
do{ OpX
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~CTRPH
SortUtil.swap(data,l,r); sN/Xofh
} '$ nGtB5
while(l SortUtil.swap(data,l,r); 2F)OyE
return l; .\\#~r`t 3
} /]58:euR
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} )uJ`E8>-
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改进后的快速排序: 20xGj?M
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package org.rut.util.algorithm.support; F,$$N>
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import org.rut.util.algorithm.SortUtil; F>{uB!!L4
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/** y,eoTmaI
* @author treeroot TgG)btQ
* @since 2006-2-2 ^O9m11
* @version 1.0 ep1Ajz.l
*/ g(/O)G.
public class ImprovedQuickSort implements SortUtil.Sort { )n61IqrW
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private static int MAX_STACK_SIZE=4096; fO|u(e
private static int THRESHOLD=10; XSIO0ep
/* (non-Javadoc) ,(b~L<zN&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z?[J_[ZtR3
*/ C
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public void sort(int[] data) { 3]82gZGG
int[] stack=new int[MAX_STACK_SIZE]; [-}%B0S**
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int top=-1; lcLxqnv
int pivot; m/c~2?-;
int pivotIndex,l,r; \shoLp
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stack[++top]=0; W|
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stack[++top]=data.length-1; m#(x D~V
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while(top>0){ z@LP9+?dE
int j=stack[top--]; #.K&]OV/88
int i=stack[top--]; AYtcN4\/
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pivotIndex=(i+j)/2; 667tL(
pivot=data[pivotIndex]; eNKdub
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SortUtil.swap(data,pivotIndex,j); qt)mUq;>
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file://partition m=y)i]=1
l=i-1; N1+]3kt ~
r=j; N1t:i? q&
do{ ?["ZEa
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SQRz8,sqkw
SortUtil.swap(data,l,r); RozsRt;i
} 2^j9m}`
while(l SortUtil.swap(data,l,r); $:P~21,
SortUtil.swap(data,l,j); cA^7}}?e
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if((l-i)>THRESHOLD){ 0
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stack[++top]=i; D{}\7qe
stack[++top]=l-1; eS+LFS7*k
} .5zJ bZ9
if((j-l)>THRESHOLD){ ;]e"bX
stack[++top]=l+1; m)2U-3*iX
stack[++top]=j; -M9
4 F
} 4df1)<}U-
%iML??S
} 4WnxJ]5`
file://new InsertSort().sort(data); g9Ll>d)tE3
insertSort(data); A) .AAr
} OuH]Y 70(
/** [! o-F;
* @param data d":{a6D*d
*/ 'f!Jh<i
private void insertSort(int[] data) { an$h~}/6:
int temp; Mqy`j9FbL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *GMRu,u2
} e$h\7i:(
} 8gdOQ=a
} G 3x1w/L
S]{Z_|h*j
} :@L5=2Z+
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归并排序: ]].21
O2B$c\pw
package org.rut.util.algorithm.support; l{yPO@ut`F
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import org.rut.util.algorithm.SortUtil; Uh}yHD`K
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/** NoIdO/vy"
* @author treeroot M?`06jQD.
* @since 2006-2-2 e4P.G4
* @version 1.0 gA*zFhGVS7
*/ b
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public class MergeSort implements SortUtil.Sort{ 4j{ }{
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/* (non-Javadoc) U9s y]7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S]a$w5ZP
*/ )}8%Gs4C
public void sort(int[] data) { YWdvL3Bgk,
int[] temp=new int[data.length]; ]vrs?
mergeSort(data,temp,0,data.length-1); z@j&vW
} }8e%s;C
:
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private void mergeSort(int[] data,int[] temp,int l,int r){ '{~ej:
int mid=(l+r)/2; VN;M;fMs
if(l==r) return ; u,q#-d0g;
mergeSort(data,temp,l,mid); )c/BDC7g
mergeSort(data,temp,mid+1,r); tIw4V^'|
for(int i=l;i<=r;i++){ WBdb[N6\
temp=data; K}@:>;*9
} pcG q
int i1=l; `.XU|J*z,
int i2=mid+1; Ab)7hCUW
for(int cur=l;cur<=r;cur++){ xg&vZzcl
if(i1==mid+1) P{ o/F
data[cur]=temp[i2++]; $+j)
else if(i2>r) a{=~#u8
data[cur]=temp[i1++]; 6]*qx5m`<l
else if(temp[i1] data[cur]=temp[i1++]; ^S@b*
else fQh!1 R
data[cur]=temp[i2++]; ,#{aAx|]
} <o
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} vbU{Et\^
)1ciO+_
} ~Gza$ K
*np|PyLP:
改进后的归并排序: 'u~use"
:#vrNg(M
package org.rut.util.algorithm.support; W:G*t4i
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import org.rut.util.algorithm.SortUtil; 4k8 @u
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/** |BR&p)7)
* @author treeroot ~yV0SpL
* @since 2006-2-2 [LK
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* @version 1.0 3yDvr*8-@
*/ j<u`W|vl
public class ImprovedMergeSort implements SortUtil.Sort { _'Z@ < ,L
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private static final int THRESHOLD = 10; ]2+(i
O #"O.GX<
/* z!tHn#
* (non-Javadoc) O B:G5B`
* 0FBifK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P t$7U[N
*/ hO8B]4=&*
public void sort(int[] data) { }j
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int[] temp=new int[data.length]; ESAh(A)8
mergeSort(data,temp,0,data.length-1); xfilxd
} \BA_PyS?W+
H4U;~)i
private void mergeSort(int[] data, int[] temp, int l, int r) { rHznXME$wZ
int i, j, k; /C"E*a
int mid = (l + r) / 2; *KNR",.
if (l == r) /@K?W=w4
return; G7u7x?E:B`
if ((mid - l) >= THRESHOLD) 0X;Dr-3<
mergeSort(data, temp, l, mid); xM(
else G8@%)$A
insertSort(data, l, mid - l + 1); F -m1GG0s
if ((r - mid) > THRESHOLD) e2>gQ p/
mergeSort(data, temp, mid + 1, r); 6xwC1V?:0t
else
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insertSort(data, mid + 1, r - mid); 5we1q7
q?wBh^
for (i = l; i <= mid; i++) { \|kU{d0
temp = data; ry:tL0;;e#
} 2ma.zI@^u9
for (j = 1; j <= r - mid; j++) { /dIiFr"e}G
temp[r - j + 1] = data[j + mid]; "qF8'58
} GCrMrZ6
int a = temp[l]; ,+XQ!y%
int b = temp[r]; vjW S35i
for (i = l, j = r, k = l; k <= r; k++) { XS>4efCJ
if (a < b) { J?{uG8)
data[k] = temp[i++]; ?U&onGy
a = temp; mY-r:
} else { l`d=sOB^
data[k] = temp[j--]; umc!KOkL
b = temp[j]; 4JucNGv
} /%~`B[4F
} FYzl- 7!Y
} Q-AN~k8+)[
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/** K-K+%U
* @param data F$.M2*9
* @param l I3$v-OiL
* @param i 7l?-2I'c
*/ &iTsuA/7
private void insertSort(int[] data, int start, int len) { rkVZP!7!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); F4*f_lP
} 9K)2OX;$w
} MYu-[Hg
} f"/NY6
} w$1.h'2
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堆排序: 7:]I@Gc'
u4%-e)$X
package org.rut.util.algorithm.support; -)w/nq
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import org.rut.util.algorithm.SortUtil; @>da%cX
k(et b#
/** *M&~R(TMn
* @author treeroot XBBsdldZ
* @since 2006-2-2 R5Ti|k.~Y"
* @version 1.0 KY@k4S+
*/ o4d>c{p
public class HeapSort implements SortUtil.Sort{ )x]/b=m
WFTTBUoH
/* (non-Javadoc) <[(xGrEZV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )U5AnL
*/ Dp>/lkk.
public void sort(int[] data) { V<1dA\I"
MaxHeap h=new MaxHeap(); LqW~QEU(
h.init(data); \SyfEcSf2v
for(int i=0;i h.remove(); nlh%O@,
System.arraycopy(h.queue,1,data,0,data.length); ?'^xO:
} 7&2xUcsz)
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private static class MaxHeap{ ="MG>4j3.F
zvE]4}VL?
void init(int[] data){ n{|~x":9V
this.queue=new int[data.length+1]; :[!rj
for(int i=0;i queue[++size]=data; Yf|+p65g
fixUp(size); iX}EJD{f
} Nq-qks.&
} >[NNu Y~
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private int size=0; s+,JwV?b
NU81 V0:jG
private int[] queue; 5s8k^n"A
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public int get() { g+U6E6}1
return queue[1]; $5(co)C
} .a?GC(
%vgn>A?]1
public void remove() { iWO16=
SortUtil.swap(queue,1,size--); k]w;(<
fixDown(1); 8H;yrNL
} rqSeh/<iD
file://fixdown E<Efxb'p
private void fixDown(int k) { PU[]
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int j; 3(jI
while ((j = k << 1) <= size) { c JGU~\
if (j < size %26amp;%26amp; queue[j] j++; 4;y*y tY*
if (queue[k]>queue[j]) file://不用交换 J&2cf#
break; @} qMI
SortUtil.swap(queue,j,k); rMUn ~
k = j; #Mrof9
} L`3x0u2
} 0;KjP?5
private void fixUp(int k) { 1)w^.8f
while (k > 1) { `|+!H.3
int j = k >> 1; Zg_ fec~6q
if (queue[j]>queue[k]) m>DBO|`
break; DOyYy~Q
SortUtil.swap(queue,j,k); v:|_!+g:
k = j; i1}Y;mj
} 274F+X
} ?31#:Mg6g+
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} W:'H&`0
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} ^,*!Qk<c
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SortUtil: tP^2NTs%]
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package org.rut.util.algorithm; /'O?
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nF`_3U8e
import org.rut.util.algorithm.support.BubbleSort; =~15q=XY0
import org.rut.util.algorithm.support.HeapSort; c<fl6o)
import org.rut.util.algorithm.support.ImprovedMergeSort; \AQ*T`Dq
import org.rut.util.algorithm.support.ImprovedQuickSort; B _k+Oa2!
import org.rut.util.algorithm.support.InsertSort; ,=jwQG4wq
import org.rut.util.algorithm.support.MergeSort; bdbTK8-
import org.rut.util.algorithm.support.QuickSort; i_Ol vuy~
import org.rut.util.algorithm.support.SelectionSort; ~U}0=lRVS
import org.rut.util.algorithm.support.ShellSort; a'r8J~:jy
usc"m huQ
/** x5jd2wSDx
* @author treeroot g:8k,1y5
* @since 2006-2-2 v)1@Ew=Y%
* @version 1.0 ;auT!a~a#
*/ fAYp\k
public class SortUtil { wkc)2z
public final static int INSERT = 1; }xJ ).D
public final static int BUBBLE = 2;
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public final static int SELECTION = 3; zO)Bf(
public final static int SHELL = 4; )jm!bR`
public final static int QUICK = 5; N.(wR
public final static int IMPROVED_QUICK = 6; -Ph"#R&
public final static int MERGE = 7; bS7%%8C
public final static int IMPROVED_MERGE = 8; @?e+;Sx
public final static int HEAP = 9; k}18
~cWM
ld
public static void sort(int[] data) { ^Q,-4\ec
sort(data, IMPROVED_QUICK); V96:+r
} [`(W(0U%
private static String[] name={ 3'2>3Y/7Bb
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a!guZUg6
}; jJbS{1z
D6N32q@
private static Sort[] impl=new Sort[]{ P.#@1_:gC
new InsertSort(), djmd
@{Djt
new BubbleSort(), jEu-CU#:
new SelectionSort(), o&-D[|E|
new ShellSort(), <!;NJLe`
new QuickSort(), r?7tI0
new ImprovedQuickSort(), SJ*qgI?}T
new MergeSort(), \l-JU
new ImprovedMergeSort(), `?=Y^+*!-
new HeapSort() *{<460`!q
}; w Dp5HZ>
rUn1*KWbE
public static String toString(int algorithm){ $-AG$1
return name[algorithm-1]; ,)?!p_*@:
} 4m1@lnjp
\uG^w(*)
public static void sort(int[] data, int algorithm) { ,B 2p\
impl[algorithm-1].sort(data); L
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} lq}m0}9<
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public static interface Sort { OjWg>v\v
public void sort(int[] data); :6TLT-B
} [[s^rC<d
,eSII2,r4
public static void swap(int[] data, int i, int j) { %1\~OnT
int temp = data; #kQ1,P6,(
data = data[j]; >lkjoEVQ
data[j] = temp; /JjSx/
} '+&!;Jj,
} xcE2hK/+